Using semiconductor devices in series with the load as final control devices (G05F1/56)

G   Physics(391283)
G05   Controlling; regulating(32106)
G05F1/56                     Using semiconductor devices in series with the load as final control devices(2926)

Device for controlling the accumulating device // 2628527
FIELD: machine engineering.SUBSTANCE: device for controlling the amount of energy stored in the storage device includes a control unit that is configured to adjust the power received through the input of the control device based on the amount of energy stored at a current time in the storage device and which is further configured with the output of the regulated power through the output of the control device to the storage device.EFFECT: increasing the reliability of the storage device in conjunction with the load, in particular with the lighting device.15 cl, 6 dwg

ultichannel pulse current stabiliser (versions) // 2624635
FIELD: electricity.SUBSTANCE: multichannel pulse current stabiliser contains N power channels, feedback device and control unit connected to each other, and load which is activated between the consolidation point of 1-N channel outputs and common wire, the control unit is connected to the control input of each channel. Each channel contains an input filter, a key element, a transistor as a discharging key, according to the first version, and an output filter, consisting of a throttle and an output condenser. The inductance value is chosen based on the short time of the transient processes, the phases of the PWM-signals of channel control are shifted relative to each other by 2π/N. The condenser capacity is chosen to be minimal, while the duration of the period quarter of the LC-filter must be less than the maximum permissible duration of the leading edge of the pump pulse.EFFECT: increased reliability and simplified pulse current stabiliser.2 cl, 5 dwg

Control system of controlled voltage rectifier // 2622043
FIELD: electricity.SUBSTANCE: controlled voltage rectifier can maintain the required value of the displacement angle ϕ1 between a sinusoidal voltage having a frequency f1 of the alternating voltage source to which the input terminals of the controlled voltage rectifiers (CVR) are connected, and the first harmonic of the input current of the CVR. In particular, when the CVR operates as a rectifier receiving power from the alternating voltage source (VS) and transmitting it to its DC consumers 4, the first harmonic of the input current of the CVR coincides in phase with the corresponding phase voltage of the VS, then the angle ϕ1 is equal to 0 radians (or 0). In addition, the CVR can operate as a stand-alone voltage inverter transferring power from the DC consumer (4) DC to the VS. In this case, the first harmonic of the input current of the CVR is opposite in phase to the corresponding voltage of the VS, i.e. the angle ϕ1 is equal to π (180). In both cases, the absolute value of the power factor consumed from the VS or entering it is 1, i.e. it has the maximum value. Apart from the CVR the control system contains the following main elements: a control device (5), a control unit (6) and measuring transducers of the input (21) and output (24) currents, and the input (22) and output (23) voltages. The control system is supplemented with a device (2) for connecting the CVR to the VS. The device (2) includes a current-limiting circuit containing a current-limiting reactor (34), as well as the first (35) and second (36) switches, and additional measuring transducers for the input current (37) and the input voltage (38) of the device (2). In addition, the control system is supplemented by an evaluation unit (7), an information display unit (8) and an additional measuring transducer (25) of the output voltage of the CVR.EFFECT: decrease down to safe values of the current circuits of controlled voltage rectifiers arising when connecting the controlled voltage rectifiers with uncharged output capacitor to an AC voltage source at times when the voltage of the voltage source is close to its peak value, simplified, accelerated, and improved quality of the output capacitor capacity setting, inductance of the current-limiting reactor of the controlled voltage rectifiers and coefficients of the communication transmission between elements of the control device.3 cl, 3 dwg

Control method for voltage pulse stabiliser // 2621071
FIELD: electricity.SUBSTANCE: invention can be used to control DC voltage pulse stabilisers of the step-up type with pulse-width modulation, which is connected to a power source of limited power that has the properties of a current source. The voltage at the output of the stabiliser is measured, a voltage error signal and its integral are calculated. By means of a differentiating element, the dynamic component of the output voltage is separated. At the beginning of each conversion period, the integral values of the voltage error signal and the dynamic component of the output voltage are stored. The stored values of the signals are multiplied by fixed coefficients, the results obtained are summed and the control pulses for the power electronic switch of the stabiliser is formed by the result of the summation on the basis of pulse-width modulation.EFFECT: output voltage astaticism and a small output voltage ripple in the static mode, small amplitude and duration of transient processes in dynamic operation modes are provided in the pulsed stabiliser, it is possible to incorporate a control device based on microcontroller technology.2 dwg

Voltage converter with separate circuits of combined conversion // 2617991
FIELD: electricity.SUBSTANCE: voltage converter (100) with the separate circuits of the combined conversion includes an undervoltage circuit and a booster voltage circuit (110) and a control unit (120, 200) for controlling the down-and-up converter. The down-and-up converter comprises an undervoltage circuit with the first set of switches (SW3, SW4) and a booster voltage circuit with the second set of switches (SW5, SW6). Controlling the undervoltage circuit and the booster voltage circuit can be performed independently of each other. The control unit is adapted to control the voltage supply from the voltage converter to the load (20) through the undervoltage circuit in the undervoltage mode by controlling the switching operations of the first set of switches and to control the power supply from the voltage converter to the load through the booster voltage circuit in the booster voltage mode by controlling the switching operations of the second set of switches.EFFECT: increasing converter efficiency over a wide range of the input and output voltages in various applications.15 cl, 6 dwg

ethod for power supply and power supply with usb interface for load time-division multiple access system // 2613179
FIELD: electrical engineering.SUBSTANCE: invention relates to electrical engineering and can be used in load time division multiple access systems. Power supply with USB interface comprises: USB interface, smooth switching circuit and DC/DC conversion circuit, which are connected in series. From output of DC/DC conversion circuit power is supplied to loading time-division multiple access system. Power supply source also comprises a capacitor, first end of which is connected between smooth switching circuit and DC/DC conversion circuit, and second end is grounded. Said capacitor is used for limitation of input current of DC/DC conversion circuit. Value of capacitor is selected in accordance with voltage on capacitor, when loading time-division multiple access system is operating or not operating, maximum current allowable for output via a USB interface, input voltage of DC/DC conversion circuit, voltage and current required by load time division multiple access system, and period of operation of load time-division multiple access system.EFFECT: technical result consists in compensation of power at reduced capacitance in circuit of connector, providing compensation of power, ensuring working parameters of power supply source with USB interface.8 cl, 8 dwg

Adjustable flyback converter or intermediate buck converter // 2611577
FIELD: electrical engineering.SUBSTANCE: invention relates to electrical engineering and can be used to control a flyback converter or an intermediate buck converter. Device and method for reducing distortions and increasing distortions power coefficients in flyback converters (21) and intermediate buck converters (22) includes assembly (1) for adjustment of control signals generated by controllers (2) to control switches (3) of the converters. Assemblies (1) increase or decrease time durations of the conducting state of switches (3) in response to increased or decreased amplitudes of voltage signals from sources (4) of voltage for powering the converters. In the preferred version the said durations, in fact, are proportional to sums of the voltage signals amplitudes and rated parameters. These rated parameters can represent amplitudes of other voltage signals, such as output voltages. Assemblies (1) are provided for controllers (2), which can provide only fixed durations, as well as for controllers (2), which can provide adapted durations by adaptable external elements.EFFECT: technical result is elimination of undesirable losses in the network and in power generators and lower cost of single-cascade converters.12 cl, 7 dwg

Dc voltage stabilizer // 2611021
FIELD: electrical engineering.SUBSTANCE: invention relates to stabilized secondary power supply sources and can be used to supply different wireless devices with power. In a DC voltage stabilizer connected to a source of input DC voltage, comprising a control transistor, a LDC-filter, an additional power supply source, a Schmitt trigger, a driver, a reference voltage source, a differential amplifier and an output voltage divider, according to the invention there is an additional transistor to lock the control signal output to the control transistor, that provides its protection against high levels of currents observed at a short circuit of outputs or at the initial moment of time.EFFECT: higher reliability by introducing a circuit of protection from short-circuits of outputs or at the moment of connecting an input voltage source; higher quality of stabilization by applying a thermally stable reference voltage source; reduced power loss by reduction of the driver output current and wider range of input voltages using voltage addition in the control circuit between the gate and the drain of the control MIS-transistor.3 cl, 3 dwg

Electronic temperature control device, cooler using same, heater using same, and control method thereof // 2594371
FIELD: electronics.SUBSTANCE: invention relates to electronics and can be used for temperature control. Electronic device to control temperature, cooler, using, heater, using it, and control method therefore are provided. Electronic control device comprises temperature thermoelectric module, including first metal element, having one end in contact with object, and second metal element, having one end connected to other end of first metal element, voltage applied to one end of first metal element and other end of second metal element; voltage supply unit supplying first voltage or variable voltage with range from second voltage to third voltage, in thermoelectric module; and controller which controls voltage supplied in thermoelectric module voltage by power supply unit, according to difference between temperature of object or first metal element and final temperature.EFFECT: technical result is increased efficiency of temperature control.25 cl, 13 dwg

Single-step dc voltage converter // 2573433
FIELD: electricity.SUBSTANCE: to output of PWM-controller intended to control current level the signal is delivered, and the above signal is equal to difference in current values of the primary and secondary windings of transformer; thus inner current control loop is formed in addition to the main loop of output voltage stabilising.EFFECT: improved stability and operation speed of single-step forward converter, wherein transistor switching takes place at zero value of current in process of quasi-resonant oscillation at load-bearing elements.2 cl, 5 dwg

ethod to control pulse converter of dc voltage // 2571768
FIELD: electricity.SUBSTANCE: invention is referred to electric engineering, and namely to power electronics, and it may be used to control semiconductor pulse inverters of DC voltage. The method ensures improved energy efficiency and functional reliability for pulse inverters of DC voltage. In order to control the pulse inverter of DC voltage current value of stabilised voltage is measured, the measured value is compared with permanent reference voltage, and on the basis of received error signal control signal is generated for regulating element of the pulse stabiliser. Besides current value of input voltage of the stabiliser is measured additionally, then it is compared with the preset value and if input voltage of the stabiliser is reduced below the preset value the obtained mismatch signal is summed up with error signal thus ensuring reduction in output voltage of the stabiliser.EFFECT: control of semiconductor pulse inverters of DC voltage.4 dwg

ethod to control multiphase step-up dc converter with input current stabilisation and device for control multiphase step-up dc converter with input current stabilisation // 2569679
FIELD: electricity.SUBSTANCE: based on pulse-width modulation of control signals the method to control multiphase step-up DC converter with input current stabilisation consists in generation of control signals by pulse-width modulation for high-frequency keys in each converter phase; to this end current values of current feedback signals in each phase are compared with their reference values, and on the basis of comparison results mismatch signals are generated, by means of these mismatch signals pulse-width modulated (PWM) signals of fixed frequency are generated. At that in each phase signals of input voltage are compared with threshold value in each phase additionally, and when input voltage has value less than the preset threshold value then by means of mismatch signal, against input voltage, the second PWM signal is generated with frequency of at least 4 times less than frequency of the first PWM signal, and the above second PWM signal is used to control keys of the respective converter phase till value of input voltage does not exceed the preset threshold value. The device for control multiphase step-up DC converter with input current stabilisation in each phase comprises input current sensor, comparison circuit for current sensor signals with reference signal and PWM-controller, to which input current mismatch signals are delivered and which outputs are coupled to key drivers in each phase of the converter. The device comprises additionally in each phase a voltage comparator that compares input voltage with threshold level, the second PWM-controller operating at frequency at least 4 times less than frequency of the first PWM-controller, and a selector coupled to the voltage comparator and switching the first or the second PWM-controller to key drivers in the respective controller phase depending on signal of the voltage comparator.EFFECT: extended range of input voltage towards lower values with simultaneous stabilisation of input current by means of a simple and cost-effective circuit.2 cl, 1 dwg

Two-channel power supply source // 2563041
FIELD: electricity.SUBSTANCE: two-channel power supply source comprises a regulating field transistor, the drain of which is connected to a diode anode and the first output of the first throttle winding, the second output of which is connected to the first inlet of the source, and the source is connected to the second inlet combined with a common output. A key element is introduced, the control inlet of which is the control inlet of the two-channel source, and outlet outputs are connected between outputs of the first and second channels. The second throttle winding is connected to a half-bridge rectifier, the first outlet of which is connected to the output of the second channel, and the second outlet is connected to the common output. The outlet divider is connected to the outlet of the first channel and the common output of the two-channel source, and by a medium point - to the inlet of the control unit, the outlet of which is connected to the gate of the regulating field transistor. The outlet divider comprises a stabilitron, resistors and a transistor, the base of which is connected to the output of the second channel of the two-channel source of power supply.EFFECT: possibility to vary and stabilise voltage at the outlet of the second channel with stable outlet voltage at the outlet of the first channel of the two-channel power supply source.1 dwg

ethod to control dependent inverter of single-phase ac current // 2561068
FIELD: electricity.SUBSTANCE: in a method to control dependent inverter of single-phase AC current at specified in the application materials control of valves of anode and cathode groups of the dependent inverter bridge in the first and second half-periods of control pulses with an adjustable angle βadj and a non-adjustable angle β in the respective areas for adjustment auxiliary control pulses are supplied in all areas for adjustment, except for the first one, in the first half-period of voltage at the non-adjustable angle β to a controlled valve of the cathode group in the middle circuit of the previous area and in the second half-period - a controlled valve of the anode group in the middle circuit of the previous area. The control pulses at the non-adjustable angle β supplied in each half-period to one respective pair of the controlled valves at the outermost circuits of the respective areas are supplied with time delay regarding the non-adjustable angle β to the value of the opening angle γ1 for the respective controlled valve in the middle circuit of the previous area.EFFECT: higher power factor for the inverter.4 dwg

Stabilised source of power supply // 2559800
FIELD: electricity.SUBSTANCE: MIS field-electric transistor is used as a power transistor of relay stabiliser and winding of voltage converter is used to open the power transistor.EFFECT: reduced loss of power at the power transistor and increased reliability of the secondary stabilised power supply source.1 dwg

Stabiliser // 2555324
FIELD: electricity.SUBSTANCE: invention is referred to radio engineering and automotive industry, in particular to stabilisers stabilising characteristics of electric circuits, and may be used in devices stabilising light intensity in electric equipment of automotive vehicles. Technical result is oriented towards improved reliability and stabilising quality of LED intensity. Technical result is attained due to the fact the stabiliser contains additional in-series resistor and light-emitting diode (LED) coupled to the stabiliser output, and a divider element connected between the base and negative pole of the source is made as a photocell and located in the pathway of LED light flux.EFFECT: invention improves reliability and stabilising quality of LED brightness due to changes in wide range of LED glow intensity at small changes in supply voltage; it also has larger functionality.1 dwg

Output current stage with automatic active-passive switching // 2554566
FIELD: electricity.SUBSTANCE: invention relates to an output current stage. The invention proposes output current stage (100) having input (IN), output (OUT) for connection to the input of device (200), to which current shall be fed, control stage (T1, T2, Z1) that establishes output current (Iout) and energy supply stage (Uv; Uv, -Uv) that is capable of provision of output current (Iout) energy. Output current stage (100) has the first transistor (T1) that controls output current in a closed cycle in a passive operating mode and the second transistor (T2; T2, T3) that controls output current (Iout) in a closed cycle in an active operating mode; with that, the first transistor (T1) and the second transistor (T2; T2, T3) are controlled by control stage (OP1) in an open cycle, and when in the active operating mode, the energy supply stage (Uv; Uv, -Uv) is controlled in an open cycle so that it can provide energy of output current (Iout).EFFECT: creation of an output current stage with automatic active-passive switching.6 cl, 5 dwg

System of control of nonlinear dynamics of direct step-down voltage converter // 2552520
FIELD: electricity.SUBSTANCE: invention relates to the field of electrical equipment and can be used in digital control systems of DC voltage converters with the function of suppression of the hazardous oscillations of output voltage occurring at a certain set of parameters of the system. In the nonlinear dynamics control system the control system consisting of the main subsystem and the control auxiliary subsystem, approximators on the basis of neural networks is connected to the power part of the converter. The converter control signal provides the stabilization of average value of output voltage. In the system the correction of error signal is provided, thus the stabilization of the design dynamic mode (1 cycle) is provided.EFFECT: ensuring of pre-set nonlinear dynamic properties of the system and pre-set parameters of speed and accuracy of output voltage stabilization in case of refusal from parametrical synthesis.3 dwg

Power unit of automobile electrical system // 2551661
FIELD: electricity.SUBSTANCE: device comprises auxiliary power supply source connected to automobile 12 V accumulator battery, half-bridge transistor converter, current-limiting resistor, current sensor, transformer-rectifying cascade, input filter, output filter, the first and second power amplifiers for transistor control of half-bridge transistor converter, voltage regulator, comparator, RS-trigger and toggle flip-flop, the first and second relays, voltage sensor at positive input terminal of half-bridge transistor converter, the first and second 4OR-NOT logic elements; the device also comprises square-wave generator and power supply source includes step-down PWM-regulator formed by in-series valve and field transistor, and the third power amplifier connected to gate of the field transistor, at that the second output of voltage regulator through indicator is connected to positive terminal of automobile 12 V accumulator battery.EFFECT: improved power characteristics and expanded functionality of the device.1 dwg

Electronic dc voltage stabiliser // 2542673
FIELD: electricity.SUBSTANCE: electronic stabiliser comprises a ballast resistor connected in series to the load and a regulating element based on two series-connected transistors, feedback divider and voltage rectifying divider, all of them connected in parallel to the load, at that one arm of the feedback divider is made as in series stabilitrons and resistor, the centre tap of the feedback divider is connected to input of the first transistor while the centre tap of the rectifying divider is connected to input of the second transistor.EFFECT: higher reliability of the stabiliser.1 dwg

Source of reference voltage determined through energy gap doubled width // 2541915
FIELD: electricity.SUBSTANCE: device contains five transistors, three resistors and a current source which is coupled between the power supply bus and output terminal; the first resistor is coupled by its first output to the common bus, the second and third resistors are connected by their first outputs to the output terminal; bases of the first and the second transistors are connected to collectors of the first and fifth transistors and bases of the fourth and fifth transistors; the second output of the first resistor is coupled to emitter of the second transistor; emitters of the first and third transistors are connected to the common bus; collector of the third transistor is connected to the output terminal; the base of the third transistor is connected to collectors of the second and fourth transistor; emitter of the fourth transistor is connected to the second output of the second resistor; emitter of the fifth transistor is connected to the second output of the first resistor.EFFECT: receipt of thermally stable output voltage, which value is close to doubled energy gap width of the used semiconductor.3 dwg

Bridge self-maintained voltage transducer // 2540785
FIELD: electricity.SUBSTANCE: in bridge self-maintained voltage transducer the secondary winding of a transformer is used to design a transistor saturation source. The result is obtained due to the bridge self-maintained voltage transducer with transistor saturation source which comprises the first, second, third and fourth transistors and their collectors, emitters of the first and second transistors, resistors, a transformer, a filter capacitor and the power source bus.EFFECT: reducing power loses at transistors of the bridge self-maintained voltage transducer and increasing its reliability.1 dwg

Degenerative voltage stabiliser // 2523168
FIELD: electricity.SUBSTANCE: voltage stabiliser includes first and second transistors connected by emitters to a common bus, first and second resistors connected by first outputs to the common bus, third transistor connected by emitter to second output of the first resistor, third resistor connected by first output to connection point of first transistor base and third transistor collector, fourth transistor connected by collector to output terminal, fourth resistor connected by first output connection point of second output of third resistor and fourth transistor emitter, second transistor collector and base connected to second output of fourth resistor, fifth resistor connected by first output to output terminal and by second output to connection point of fourth transistor base and second output of second resistor, fifth and sixth transistors connected by emitters to power bus and by bases to sixth transistor collector, seventh transistor connected by collector to power bus, eighth transistor connected by emitter to output terminal, current source inserted between power bus and connection point of eighth transistor base and first and fifth transistor collectors, sixth resistor inserted between second and third transistor bases, eighth transistor collector connected to sixth transistor collector, seventh transistor base connected to eighth transistor base, seventh transistor emitter connected to output terminal.EFFECT: output voltage of stable temperature, reduced minimum difference of stabiliser input/output voltage.4 dwg

Source of reference voltage // 2523121
FIELD: electricity.SUBSTANCE: device includes first and second resistors connected with their first outputs to power bus, third resistor connected with one its output to the common bus, first transistor connected with its source to second output of the first resistor, second transistor connected with its emitter to the common bus, third transistor connected with its collector to gate connection of the first transistor with second output of the second resistor, fourth and fifth resistors with their first output connected to collector of the second transistor, second output of the fifth resistor connected to bases of the first and third transistors, emitter of the third transistor connected to second output of the third resistor, second output of the fourth resistor and drain of the second transistor connected to output circuit.EFFECT: reduced temperature coefficient of output voltage.3 dwg

Redundant direct current stabiliser // 2522889
FIELD: electricity.SUBSTANCE: invention refers to electric engineering and can be applied in spacecrafts for current limitation in electric power supply system of solar battery panel opening for a drive opened to the limits. Redundant DC stabiliser includes control element (CE) connected in series with current sensor and load and based on four n-channel MIS transistors connected in parallel and in series, negative CE output connected via current sensor to common power supply bus and positive output connected via load to positive power supply bus; four identical control circuits (CC) of CE MIS transistors are added; each CC output is connected to gate of separate MIS transistor of CE; negative power supply output of each CC is connected to common power supply bus and positive output is connected to positive power supply bus; gauge input of each CC is connected to the point of CE connection with current sensor; each CC includes input non-inverting amplifier with its input connected to CC gauge input and output connected to inverting input of output amplifier (OA), output of which is connected to CC output; reference voltage source with its output connected to non-inverting input of OA; power supply pulse generator with its output connected to inverting OA input.EFFECT: improved reliability of DC stabiliser.1 dwg

Capacitive power supply unit // 2520258
FIELD: electricity.SUBSTANCE: invention is related to a capacitive power supply unit, moreover to an electronic device equipped with the capacitive power supply unit. To this end at the first facility the capacitive power supply unit contains an input part (10) having input contacts (Ln, Nt) to connect an alternating-current source and a capacitive coupling; a rectifying part (20) connected through the capacitive coupling to the input contacts (Ln, Nt) and an output part (30) connected to the rectifying part, there's an auxiliary device (R1) limiting start-up current where output contacts (V+, V-) are connected to the respective contacts of a device (D5) limiting output voltage, and in-series capacitive impedance (Zdc) conducting direct current has a resistive component with a resistive value equal to at least 0.2 of the first circuit resistive value. At the second facility the electronic device contains a power input (101), (102) for connection to the supply mains; a capacitive power supply unit (110) coupled to the power input; the first functional unit (140) receiving power supply from the capacitive power supply unit.EFFECT: reduction of heat dispersion losses.6 cl, 5 dwg

Source of reference voltage // 2518974
FIELD: electricity.SUBSTANCE: device contains five transistors, two resistors and current source coupled between the power supply bus and output terminal, bases of the first and second transistors are connected to collectors of the first and fifth transistors, the first resistor is coupled between the common bus and emitter of the second transistor, the second transistor is coupled between the output terminal and connected emitters of the fourth and fifth transistors, emitters of the first and third transistors are coupled to the common bus, bases of the third, fourth and fifth transistors are joined with collectors of the first and fourth transistors, a collector of the third transistor is connected to the output terminal.EFFECT: obtainment of thermally stable output voltage at values closed to double energy gap width.3 dwg

Light-emitting diode driving // 2516435
FIELD: physics, optics.SUBSTANCE: invention relates to a device for driving a light-emitting diode (LED), an apparatus having said device and a method of driving a LED. In the first object, the disclosed device comprises an output stage for feeding current to the LED, wherein the current has an average value and a peak value, wherein the peak value, divided by the average value, forms a ratio, and an input stage for receiving a signal from a power supply unit, wherein the input stage includes a tool, having a resonance circuit for reducing the ratio through a frequency component to the signal or adaptation of the frequency component of the signal, which improves efficiency of the LED. According to the second object, in the method on the output stage, current is fed to the LED, wherein the current has an average value and a peak value, wherein the peak value, divided by the average value, forms a ratio, and an input stage for receiving a signal from a power supply unit, wherein the input stage includes a tool, having a resonance circuit for reducing the ratio by adding a frequency component to the signal or adaptation of the amplitude of the frequency component of the signal, which improves efficiency of the LED.EFFECT: designing a device for driving a LED with high efficiency.13 cl, 4 dwg

Reference voltage source // 2514930
FIELD: electricity.SUBSTANCE: device contains the first and second transistors which bases are united and connected to the device output, the first resistor, an emitter of the first resistor, a common bus, the second resistor, an emitter of the second resistor, the first output of the second resistor, the third resistor, the second output of the second resistor, a current repeater, the third transistor, a collector of the second resistor, a connection point of the first transistor collector, a base of the third transistor, a feed input of the current repeater, a power bus, a collector of the third transistor.EFFECT: simplification of scheme with high temperature stability of output voltage.4 dwg

Device for generation of alternating current passing in load supply circuit // 2510764
FIELD: electricity.SUBSTANCE: invention is attributed to the field of electric engineering and can be used for manufacturing of power supply facilities. Device contains direct voltage source, converter of direct voltage to pulse voltage connected by its inputs to outputs of direct voltage source, converter of pulse voltage to direct voltage connected by its inputs to outputs of converter of direct voltage to pulse voltage connected by its output to the first control input of converter of direct voltage to pulse voltage, direct current stabiliser connected by its first input to output of converter of pulse voltage to direct voltage and by its second input to positive output of direct voltage source, by its first output to one of load outputs and by its other output to negative output of direct voltage source; device contains control circuit connected to its first input to output of converter of pulse voltage to direct voltage by its second input to the second output of direct current stabiliser, by its first output to the second (negative) output of direct voltage source, and by its second output to the second control input of converter of pulse voltage to direct voltage.EFFECT: stabilisation of dissipation power in direct current stabiliser at change of load resistance.1 dwg

ethod to control pulse voltage stabiliser // 2509337
FIELD: electricity.SUBSTANCE: voltage Uout is measured at the outlet of the stabiliser, as well as inlet voltage Uin, currents of the throttle IL, and load l, these signals are selected in each period of conversion at certain moments of time h; the signal "capacitor current" is calculated, its dynamic component is extrapolated, and to ensure static accuracy of output voltage of the pulse voltage stabiliser, they generate a mismatch signal by voltage, and its digital summation is carried out with accumulation (they perform digital integration); the signal "capacitor current" after frequency correction and in the sum with the integrated signal of mismatch is sent to the inlet of the width-pulse modulator.EFFECT: increased quality of outlet voltage of pulse voltage stabiliser PV under dynamic and static modes of operation during discrete processing of its information signals.20 dwg

Pulsed dc voltage controller // 2505913
FIELD: electricity.SUBSTANCE: pulsed dc voltage controller comprises series-connected first diode, controlled switch, filter inductance and load, two zero-diodes and filter capacitors, a microcontroller, a control driver, a feedback circuit and a manual control panel, a synchronisation unit, two inputs of which are connected to second unlike terminals of first diodes, and two outputs are respectively connected to inputs of the control driver and the microcontroller. The filter inductances are made on a common magnetic conductor and are magnetically coupled. The pulsed controller includes two additional capacitors and two second diodes. Each of the filter inductances is made with an additional lead. The leads of the additional capacitors are connected to additional leads of the filter inductances and the common terminal of the alternating current primary supply, respectively, and leads of the second diodes are connected to the additional and output leads of corresponding filter inductances.EFFECT: enabling use to power self-contained inverters, cathodic protection stations, micro-arc oxidation apparatus and for powering various other electrical equipment.2 cl, 2 dwg

Current control system and method of current control // 2491605
FIELD: electricity.SUBSTANCE: invention suggests a current control system that contains at least one longitudinal branch with longitudinal linear controller (1, 11; 12) in order to shape a signal (u, u1, u2) controlling the impact; at that the longitudinal controller (1, 11, 12) is connected to semiconductive actuating element (2, 21, 22) connected to supply voltage (Uin) and referred to earthing and to which output voltage (Uout) is applied at the output side. At that reference signal is supplied to the longitudinal controller (1, 11, 12) while current-measuring signal and regulating signal (u, u1, u2) are referred to earthing. The regulating signal (u, u1, u2) is sent to the difference shaper (5, 51, 52) which subtracts difference of supply voltage (Uin) and output voltage (Uout, U1out, U2out) from the regulating signal (u, u1, u2). At that the shaped output signal from the difference shaper (5, 51, 52) is sent to semiconductive actuating element (2, 21, 22) as a corrected regulating signal (u', u'1, u'2).EFFECT: improving reliability and accuracy of current control system.10 cl, 3 dwg

Secondary power supply // 2490692
FIELD: electricity.SUBSTANCE: invention suggests secondary power supply which consists of a switching element; primary wiring of a transformer which first lead is connected to the first output of power supply source and the second lead is connected through primary circuit of a current sensor to the first output of the switching element; input of the latter through pulse generator and threshold device connected in-series is connected to the first output of output circuit of an error signal shaper and its second output is connected to summator output; the first input of the summator is connected to secondary circuit of the current sensor, the second input of the summator is connected to reference-supply source, outputs of input circuit of the error signal shaper are connected to the first secondary wiring of the transformer while its second wiring is connected to the load; service power supply unit with its first and second inputs connected to the first and second outputs of the primary power supply; positive and negative supply busses of reference-supply source, pulse generator and threshold device are connected to the output of the service power supply unit and the second output of the primary power supply source respectively; and the switching element consists of two bipolar transistors.EFFECT: enlarging the upper range of input operating voltage for secondary power supply source.2 dwg

Source of reference voltage determined through energy gap doubled width // 2488874
FIELD: electrical engineering.SUBSTANCE: device contains five transistors, three resistors and a current source which is placed between the power supply bus and the output terminal; the first and the second resistors, via their first outputs, are connected to the output terminal; the bases of the first and the second transistors are connected to the collectors of the first and the fifth transistors; the third resistor is placed between the common bus and the second transistor emitter; the emitters of the first and the third transistors are connected to the common bus; the collector of the third transistor is connected to the output terminal; the bases of the third, the fourth and the fifth transistors are connected to the collectors of the second and the fourth transistors; the emitter of the fourth transistor is connected second output of the second resistor; the emitter of the fifth transistor is connected to the second output of the first resistor.EFFECT: obtainment of thermally stable output voltage at values closed to doubled energy gad width.3 dwg

Voltage stabiliser // 2488156
FIELD: radio engineering, communication.SUBSTANCE: stabiliser contains a transistor, whose collector is the input of the device, the emitter is the output of the device and the base is connected through a phototransistor to the collector and through a resistor to the emitter and the anode of a light-emitting diode which is optically connected to the phototransistor, the cathode of the light-emitting diode being connected through a stabilitron to a common wire.EFFECT: high efficiency owing to reduced loss on controlling the control transistor.1 dwg

Redundant voltage stabiliser based on mis transistors // 2487392
FIELD: electrical engineering.SUBSTANCE: redundant voltage stabiliser based on MIS transistors with positive outputs of each voltage stabiliser are connected through diodes at the load and source of the regulating MIS transistor through measuring resistance is connected to the stabiliser output and to the base of current-limiting n-p-n transistor while emitter of this transistor is connected to the stabiliser output and collector to the gate of regulating MIS transistor; there is an additional tripping MIS transistor with p-channel connected in-series between positive output and drain of the regulating MIS transistor, its emitter is connected to the connection point of drains of MIS transistors and its base through Zener diode and resistor connected in-series is connected to the stabiliser output; n-p-n transistor with emitter connected to the common point, the base through resistance is connected to the collector of p-n-p transistor and collector through resistor to the gate of a tripping MIS transistor; starting capacitor which is connected between the collector and emitter of n-p-n transistor; limiting resistor connected between the output of reference-voltage source and the gate of regulating MIS transistor.EFFECT: reliability improvement.1 dwg

Dc voltage stabiliser // 2485569
FIELD: electrical engineering.SUBSTANCE: proposed is a DC voltage stabiliser containing a regulating transistor connected via the emitter and via the collector to the input and the output pins respectively, a differential DC amplifier on two transistors, their conductivity opposed to that of the regulating transistor while their joined emitters, via the resistor, connected to the common pin, the first transistor collector, representing one of the inputs of the differential amplifier, is connected to the base of the regulating transistor and (via the resistor) to the input pin while the second transistor collector representing the other input of the differential amplifier, is connected to the output pin, its base connected to the output voltage divisor output; the base of the first transistor, representing the differential amplifier output, is connected to the output of the reference supply source consisting of a limiting resistor and a zener diode, connected in series. The limiting resistor is connected to the output pin while the zener diode is connected to the common pin; additionally envisaged is a smoothing capacitor placed in parallel to the output pins, as well as a starting capacitor placed between the regulating transistor base and collector and ensuring diode staring of the regulating transistor at the moment of input voltage supply.EFFECT: increased reliability by simplification of the start-up circuit.2 dwg

Secondary of power supply source with power takeoff from phase wire of industrial frequency high-voltage power transmission line // 2483409
FIELD: electricity.SUBSTANCE: proposed device comprises a primary converter, which is formed by a closed magnetic conductor, on which the secondary winding is placed, and a phase wire is pulled into the central hole of the closed magnetic conductor, at the same time winding clamps form output clamps of the primary converter, and output clamps of the secondary winding of the primary converter are connected to input clamps of the voltage converter-controller via a serially connected non-polar capacitor. A load is connected to output clamps of the converter-controller. Current flowing in a wire excites electromagnetic field in a magnetic conductor, intensity of which is determined by the ratio where I - the value of current force in the phase wire, lav - the medium line of the closed magnetic conductor. Intensity of the magnetic field induces voltage on clamps of the secondary winding, which is proportionate to the number of turns where U - valid value of output voltage of the primary converter in the idle mode, Iav - medium line of the closed magnetic conductor, S - cross section of the magnetic conductor, k - derivative of a linear section of the main curve of magnetisation of magnetic conductor material, Imin - minimum value of current force in the phase wire.EFFECT: higher level of power taken from a phase wire of an industrial frequency high voltage power transmission line to a relatively higher load exceeding Ohm units, with preservation of small dimensions and weight of a device.1 dwg

Circuit of power ratio control and grid source of power supply // 2480888
FIELD: electricity.SUBSTANCE: circuit (10) of power ratio control comprises input units (n1, n2), which receive rectified input voltage, being rectified input voltage of an electric grid, and an excitation circuit (IC1), which excites a switch (M1). The serial assembly of a switch and a throttle (L1) is installed between input units. The serial assembly of a rectifier (D1) and an input capacitor (C2) is arranged in parallel to the throttle (L1). The rectifier does not conduct current, when the switch is closed. The excitation circuit excites the switch to generate sinusoidal current via a switch, which is synchronised with sinusoidal voltage of input voltage of the electric grid. Due to layout of the output capacitor in the circuit of power ratio control, the output capacitor may be charged only after the first cycle of conducting the switch current. The advantage of this layout is the fact that the start-up current does not arise before or after the first cycle of switch current conducting.EFFECT: increased reliability.12 cl, 9 dwg

Voltage stabiliser with low noise level // 2479007
FIELD: electrical engineering.SUBSTANCE: proposed is a voltage stabiliser with a low noise level containing a regulator element (with an inverting and a non-inverting control inputs and an output connected to the device input and the resistive voltage divider input, the resistive voltage divider output linked to the inverting input of the differential error amplifier), a reference voltage source (connected to the non-inverting of the differential error amplifier), the first current output of the differential error amplifier (linked to the inverting control input of the regulator element), the second current output of the differential error amplifier (linked to the non-inverting input of the regulator element) and a balancing capacitor; additionally introduced into the circuit is a differential amplifier the inverting input whereof is connected to the non-inverting input of the of the differential error amplifier via the first resistor while the non-inverting input is connected to the reference voltage source via the second resistor; the first current output of the additional differential amplifier is connected to the inverting input of the regulator element while the second current output of the additional differential amplifier is connected to the non-inverting input of the regulator element; the balancing capacitor is placed between the non-inverting input of the additional differential amplifier and the power supply common bus.EFFECT: reduction of the voltage stabiliser output noise level.4 cl, 8 dwg

ethod and device for decreasing capacity in receiver-transmitter // 2477877
FIELD: radio engineering, communication.SUBSTANCE: integrated circuit for obtaining reduction of capacity in receiver-transmitter can include interference transducer that defines interference level corresponding to received signal and transmitting power sensor that defines the necessary level of transmitting power for transmitted signal, process recorder that defines process angular points of components in receiver and/or transmitter, and temperature recorder that defines the temperature of receiver and/or transmitter, finite-state automation, note that finite-state automation can switch the receiver form high linearity mode to low linearity mode, if operation set of conditions is met, also it can switch the transmitter from high capacity mode to low capacity mode, if operation set of conditions is met.EFFECT: reduction of receiver-transmitter capacity.34 cl, 9 dwg

ethod for electrochemical current source (eccs) discharging // 2477510
FIELD: electrical engineering.SUBSTANCE: according to the method, ECCS discharging is carried out by way of periodical connection and disconnection of load and at constant power; in the course of discharging charge current increment rate is controlled. At current increment rate equal to zero the load is disconnected; with load disconnected, one controls ECCS voltage increment rate for the voltage final value recovery at constant rate.EFFECT: electric discharge characteristics increase.3 dwg

ethod for single-cycle control of power factor correction // 2475806
FIELD: electrical engineering.SUBSTANCE: method for single-cycle control of power factor correction. The method is applied for an up-converter and implemented by way of the system main control microcircuit. In the method, the discrete value of bus voltage U0 and the discrete value of inductive current ig are determined during launch of an analogue-digital converter discretisation. Voltages u1(t) and u2(t) are calculated in accordance with the formulae provided. PWM signal duty factor is calculated in accordance with computed voltages. One derives PWM signal and calculates the next time of the analogue-digital converter discretisation launch in accordance with the duty factor (I), Rs standing for a current-sensing resistor resistance, um - for voltage achieved by way of control of the difference between voltage U0 and the reference value Uref via a proportional integral regulator, T standing for switching period.EFFECT: simplification of the algorithm of single-cycle control of power factor correction.4 cl, 6 dwg

ethod to control dc voltage pulse converter and device for its implementation // 2475805
FIELD: electrical engineering.SUBSTANCE: slope of the signal of the choke current variable component, generated by the aperiodic link out of a signal proportional to the choke voltage is unaffected by variation of the choke actual inductance which enables the key element switching with equality of the values of the choke current variable component signal and the sweep signal Yp(tx) with the opposite sign.EFFECT: DC voltage pulse converters adaptation to choke inductance instability.2 cl, 4 dwg

Pulse source of supply (versions) // 2472205
FIELD: electricity.SUBSTANCE: pulse source of supply in accordance with the first version comprises a rectifier, serially connected with a smoothing filter, a control unit with a source of reference voltage. At the same time in a straight branch the smoothing filter is serially connected with a power switch, a VLC-circuit and a control unit, and in a reverse branch the smoothing filter is serially connected with the VLC-circuit. At the same time the VLC-circuit comprises the following serially connected components: a shunting diode, an inductance and an accumulating capacitance, besides, connection of a cathode of a shunting diode with the accumulating capacitance is an input and simultaneously an output of a straight branch of the VLC-circuit, connection of an anode of a shunting diode with an inductance is an input of a reverse branch of a VLC-circuit, and connection of an accumulating reservoir with an inductance is an output of a reverse branch of a VLC-circuit. At the same time the control output of the control unit is connected with the control input of the power switch. In a pulse source of supply in accordance with the second version, the output of the smoothing filter is additionally connected with an input of the control unit supply.EFFECT: independence of parameters of elements of a control circuit on voltages at an input of a source of supply and a load.22 cl, 10 dwg

ethod to control dependent inverter of single-phase ac current // 2469458
FIELD: electricity.SUBSTANCE: coefficient of inverter capacity in average makes 0.725. The method of control of a dependent inverter of a single-phase AC current consists in supply of control pulses at each zone of control into appropriate half-waves of grid voltage with an adjustable angle βadj and a non-controlled angle β to controlled valves of cathode and anode groups of the bridge at appropriate time intervals in the same sequence, which is specified in the invention formula.EFFECT: higher coefficient of inverter capacity as a whole also by increasing capacity coefficient at the first zone of control due to increased time interval of generator energy inversion into a grid at this zone and reduction of time interval of power consumption from a grid to a generator.3 dwg

Overload protection of voltage-reducing device // 2466487
FIELD: electricity.SUBSTANCE: system for reduction of voltage in an electric source of AC power supply for a load with the purpose to increase energy efficiency comprises a transformer and a power converter connected into a circuit between the electric source of AC supply and the load, and a shunting switch S, which provides for transformer disconnection from the circuit and which connects the electric source of supply with the load in case of continuous overload of the transformer. The system comprises a facility (14) to measure transformer temperature, a facility (17) to measure current in the circuit and a control facility (15), receiving signals from sensors (14, 17) and for control of the shunting switch S, to shunt the transformer and make it possible for it to be cooled down. A safety fuse F2 and a device (16) of thermal opening are connected into the circuit of the secondary winding of the transformer, as a safety device for interrupting of power supply into the transformer, if there is a failure in operation of the shunting switch.EFFECT: provision of a system, by means of which the transformer may be shunted to eliminate heating, prevent damage of a transformer and reduce a potential risk of fire.

Dc voltage stabiliser // 2465627
FIELD: electricity.SUBSTANCE: DC voltage stabiliser is proposed, comprising a controlling element, connected with one output to an input bus, with the other one - to outputs of a closing diode and a throttle, the other output of which is connected with an output bus and a filter capacitor, the control output of the controlling element is connected to the output of a control unit, the input of which is connected with the output bus, and its second supply bus - with the common bus, at the same time a start-up unit comprises a start-up transistor, the emitter of which is connected to a point of connection of the input bus and output of the second resistor, the base - with the output of the first resistor, the other output of which is connected with the cathode of the first diode, the collector - with the output of the start-up resistor, the other output of which is connected with an anode of a decoupling diode and with the first bus of the control unit supply, the cathode of the decoupling diode is connected to the output bus, and also the second diode and the capacitor, at the same time the anode of the first diode is connected with the cathode of the second diode and via a capacitor is connected to the common bus, at the same time the anode of the second diode is connected with the collector of the start-up transistor.EFFECT: simplified start-up circuit and higher reliability of a device.2 dwg

Dc voltage stabiliser // 2463639
FIELD: electricity.SUBSTANCE: DC voltage stabiliser contains a regulating transistor, an amplifying transistor, an output voltage divisor, a base voltage divisor containing a resistor and a stabilitron, a startup unit consisting of a stabilitron, a diode, a resistor and a capacitor, a resistor and a diode.EFFECT: device reliability enhancement due to the triggering circuit simplification.2 dwg
 
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