RussianPatents.com
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Control device of amplitude of heavy pulse signals. RU patent 2429558. |
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FIELD: electricity. SUBSTANCE: control device of amplitude of heavy signals includes the first low-pass filter the input of which is the input of device for controlled signal, the second low-pass filter the output of which is the output of device, bipolar transistor the emitter of which is connected to input of the second low-pass filter, resistor and input of control signal. There introduced is semiconductor diode the first output of which is connected to base of bipolar transistor, and the second output is connected to input of control signal, and additional bipolar transistor the emitter of which is connected to output of the first low-pass filter, collector - to base of bipolar transistor, and base - to the first output of resistor; at that, collector of bipolar transistor is connected to output of the first low-pass filter and the second output of resistor is connected to common conductor. EFFECT: creation of control device of amplitude of heavy pulse signals, which is capable of operating from heavy pulse generator, both with low and high output resistance. 3 dwg
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Bipolar current mirror with controlled transfer ratio / 2422980 Electronic adjustment of transfer ratios in current sources controlled by current on the basis of a current mirror is carried out through usage of control transistors in basis circuits of the current mirror transistors, and control transistors have a structure opposite to a structure of the current mirror transistors (2) and perform function of controlled voltage sources. The transfer ratio is controlled by a differential voltage supplied to bases of control transistors (5). Connection of transistors that form current current mirrors with input and output transistors, makes it possible to expand a dynamic range of a control signal. |
Controlled complementary differential amplifier / 2421897 Controlled amplifier is the base node of modern receiving and processing systems of HF and microwave signals, analogue computing and measuring equipment. Controlled complementary differential amplifier includes the first (1) and the second (2) input transistors the collectors of which are connected to the first (3) power source, the first (4) and the second (5) output tripoles the base inputs of which are connected to each other, collector output of the first (4) output tripole is connected to the first (6) input of load circuit (7), which is matched with the second (8) power source, collector output of the second (5) output tripole is connected to the second (9) input of load circuit; emitter of the first (1) input transistor is connected to emitter input of the first (4) output tripole; emitter of the second (2) input transistor is connected to emitter input of the second (5) output tripole; at that, control input (10) of controlled pedestal current source (11) is connected to control voltage source (12). To the diagram there introduced is the first (13) and the second (14) additional transistors and additional pedestal current source (15) connected between combined base inputs of the first (4) and the second (5) output tripoles and the second (8) power source; at that, controlled pedestal current source (11) is connected between the first (3) power source and combined emitters of the first (13) and the second (14) additional transistors; base of the first (13) additional transistor is connected to emitter of the first (1) input transistor; base of the second (14) additional transistor is connected to emitter of the second (2) input transistor; collector of the first (13) additional transistor is connected to collector output of the first (4) output tripole; collector of the second (14) additional transistor is connected to collector output of the second (5) output tripole. |
Sound amplification control based on particular volume of acoustic event detection / 2417514 In one aspect of dynamic amplification variation control, sound signal is controlled in response, at least, partially, to acoustic event and/or degree of signal variation related with boundaries of acoustic event. In another aspect, sound signal is divided into acoustic events to compare difference between particular volumes between successive time units of sound signal. |
Processing dynamic properties of audio using retuning / 2413357 Processor or method of processing dynamic properties of audio employs a mechanism or sequence of retuning operations for fast adaptation to changes in content in the audio signal. The retuning signal can be generated by analysing the audio signal itself, or retuning can be performed based on an external event, such as changing the channel on a television receiver or changing the input selection on an audio/video receiver. If there is an external activating signal, one or more features of the state of the dynamic property processor for the current audio source can be stored or associatively linked to such an audio source before switching to a new audio source. Further, if the system if switched back to the first audio source, the dynamic property processor can be retuned to a state stored earlier or approximation thereof. |
Two-channel controlled alternating current amplifier / 2394364 Two-channel controlled alternating current amplifier (dwg.4) includes source of input (1) and control (2) signals, first (3) and second (4) control transistors (T), first (5) and second (6) output T the bases of which are combined; collector of T (5) is connected to first (7) load circuit and to output (8) of the first amplification channel; collector of T (6) is connected to second (9) load circuit and to output (10) of the second amplification channel; emitter of T (5) is connected to first (11) current-stabilising bipole (CB); emitter of T (6) is connected to second (12) CB. Source of input signal (1) is connected to combined bases of T (5) and T (6); control signal source (2) is connected between bases of T (3) and T (4); emitters of T (3) and T (4) are connected to emitter of T (5) and to emitter of T (6) respectively through first (13) and second (14) separating capacitors (C); at that, emitters of T (3) and T (4) are connected to the appropriate outputs (15) and (16) of additional circuit (17) of static mode T (3) and T (4). |
Differential amplifier with controlled amplification factor / 2394359 Differential amplifier (DA) includes first (1) and second (2) input transistors (T) with combined emitters the bases of which are connected to first (3) DA input, third (4) and fourth (5) input T the emitters of which are connected to emitters of T (1) and T (2) and to output (5) of controlled current source (CCS) (6), and bases are connected to second (7) DA input, and load circuit (8) connected to collectors of T (1) and T (5). To the scheme there introduced is additional bipole I11 connected to input (12) of additional current amplifier (CA) (13) and collectors of T (2) and T (4); at that, output (14) of CA (13) is connected to input (15) of CCS (6), and the main output (16) of additional voltage-to-current converter (17) is connected to input (12) OF CA (13). |
Controlled amplifier and analogue multiplier of signals on its basis / 2390922 Invention may be used in devices of automatic control of amplification, phase detectors and modulators, and also in systems of phase automatic tuning and multiplication of frequency or as amplifier, coefficient of transmission by voltage of which depends on the level of control signal. Analogue multiplier is the basic unit of modern systems for receiving and processing of signals of HF and SHF ranges, analogue computer and measurement equipment. Controlled amplifier comprises the first (1) input and the first (2) output transistors, bases of which are combined, the first current-stabilising dipole (3) connected to collector of the first (1) input transistor and connected to bases of the first (1) input and first (2) output transistors, load circuit (4) connected to collector of the first (2) output transistor, the first source of signal (5) connected to emitter of the first (1) input transistor, the first (6) source of amplification control signal. Circuit comprises the second (7) input transistor, emitter of which is connected to the first (6) source of amplification control signal, collector is connected to the first current-stabilising dipole (3), and base is connected to base of the first (1) input transistor. |
Controlled ac amplifier / 2390920 Invention may be used as AC amplifier, coefficient of transmission by voltage of which (Ku) depends on the level of control signal (uy). Such devices are used in structure of analogue microchips of various functional purpose, systems of automatic amplification control, analogue signal multipliers, etc. Controlled AC amplifier (CACA) comprises the first (1) input transistor (T), base of which is connected to the main (2) input of CACA, the second (3) input T, base of which is connected to control inlet (4) of CACA, dipole (5) of local negative feedback (NFB) connected between emitters of the first (1) and second (3) T, load circuit (6) connected to collector of the first (1) and second (3) T and outlet (7) of CACA, the first (8) blocking capacitor (C) connected by alternating current between emitter of the first (1) T and common bus (9) of supply sources (SS), the first (10) current stabiliser connected to emitter of the first (1) T, the second (11) current stabiliser connected to emitter of the second (3) T, the second blocking C (12). The circuit comprises the first (13) and second (14) additional T, emitters of which are connected to each other via additional dipole (15) of NFB and are connected to according first (16) and second (17) current stabilizers, base of the first (13) additional T is connected to control input (4) of CACA, the base of the second (14) additional transistor is connected to common bus (9) of SS, besides between combined collectors of the first (13) and second (14) T and combined collectors of the first (1) and second (3) T there is additional inverting current repeater (18) connected, and emitter of the second (14) T is connected to the first input of the second (12) blocking C, the second output of which is connected by alternating current to common bus (9) of SS. |
Controlled ac amplifier / 2390919 Invention may be used as broadband amplifier, coefficient of transmission by voltage of which depends on the level of control signal (uy). Such devices are used in structure of analogue microchips of various functional purpose, systems of automatic amplification control, analogue signal multipliers, etc. Controlled AC amplifier (CACA) comprises the first (1) input transistor (T), base of which is connected to the main (2) input of CACA, the second (3) input T, base of which is connected to control inlet (4) of CACA, dipole (5) of local negative feedback (NFB) connected between emitters of the first (1) and second (3) T, load circuit (6) connected to collector of the first (1) and second (3) T and outlet (7) of CACA, the first (8) blocking capacitor connected by alternating current between emitter of the first (1) T and common bus (9) of supply sources (SS), the first (10) current stabiliser connected to emitter of the first (1) T, the second (11) current stabiliser connected to emitter of the second (3) T, the second blocking capacitor (12). The circuit comprises the first (13) and second (14) additional T, emitters of which are connected to each other via additional dipole (15) of NFB and are connected to according first (16) and second (17) current stabilisers, base of the first (13) additional T is connected to control input (4) of CACA, the base of the second 14 additional transistor is connected to common bus (9) of SS, besides the first (10) current stabiliser is arranged in the form of controlled current stabiliser, having non-inverting input (18), and the second (12) blocking capacitor is connected between emitter of the second (14) additional T and non-inverting input (18) of the first (10) current stabiliszer. |
Cascode differential amplifier with controlled amplification / 2389130 Invention may be used in devices of automatic adjustment of amplification, phase detectors and modulators, and also in systems of phase self-tuning and multiplication of frequency or as amplifier, voltage transfer coefficient of which depends on the level of control signal. Controlled amplifier is the basic unit of up-to-date systems for receiving and processing of signals from HF and SHF ranges, analog computer and metering equipment. Cascode differential amplifier (CDA) with controlled amplification comprises the first (1) and second (2) input transistors, emitters of which are connected to source of reference current (3). The first (4) and second (5) output composite transistors, main emitters of which (6, 7) are connected to according collectors of the first (1) and second (2) input transistors, collectors are joined by load circuit (8), and bases are connected to source of shift voltage source (9). Circuit includes additional transistor (10), emitter of which is connected to additional source of reference current (11) and via additional resistor (12) is connected to combined emitters of the first (1) and second (2) input transistors. Base is connected to control input (13) of CDA with controlled amplification, besides as the first (3) and second (4) of output composite transistors, composite transistors are used with the main (6, 7) and additional (14, 15) emitters, which are combined to each other and joined to collector of additional transistor (10). |
Cascode amplifier / 2428786 Cascode amplifier contains input transistor (1) the base of which is connected to static mode setting circuit (2) and is connected through separating capacitor (3) to signal source (4); emitter as to alternating current is connected to the first (5) bus of power supplies, and collector is connected to emitter of output transistor (6), potential offset circuit (7) connected to base of output transistor (6), bipole of collector load (8), the first output of which is connected to collector of output transistor (6) and to output of device, and the second bus of power supplies. The second output of bipole of collector load (8) is connected to the second (9) bus of power supply through additional current-stabilising bipole (10) and through auxiliary bipole (11) to emitter of output transistor (6). |
Method of linearising amplitude characteristics of radio signal amplification path / 2425439 Method of linearising amplitude characteristics of the amplification path of a radio signal formed by amplification characteristics of two parallel amplifiers, characterised by that the nominal value of the transmission coefficient of the amplification path is formed as a transfer function of two amplifiers which are connected in parallel on inputs and outputs and separately controlled on two sections of the amplitude characteristic. At the initial low-signal section of the amplitude characteristic, the common modulo transmission coefficient is formed as a sum of transmission coefficients of the non-controlled main amplifier and an auxiliary controlled parallel amplifier, and on the remaining section up to the maximum input level by adjusting the transmission coefficient of the main amplifier for the transmission coefficient of the auxiliary parallel amplifier equal to zero during the off mode on the current of output transistors thereof, and compensation for phase deviations is performed on the an input signal which is common for both amplifiers. The method is based on that, the transfer function of the two parallel-connected directed links (amplifiers) is equal to the sum of transfer functions of the directed links. Directivity is absence of cross-talk between the links and absence of effect of the overall output signal on characteristics of the parallel-connected links. In the disclosed method, directivity is provided by limiting the active region of the operation mode of the auxiliary amplifier on gain and on operation mode, on the direct current of the final stage of the auxiliary amplifier. |
Method of generating error signals in amplifier characteristic linearisation devices / 2423777 Method of generating error signals in amplifier characteristic linearisation devices involves an operation for determining the error value from the level of the input and output signal in order to generate error-correcting signals as functions of deviation values. In order to minimise errors due to measuring devices, the level of the input and output signal is measured while generating tabulated correcting signals with an input measuring device while recording into memory buffer the code of the measured level of the input signal and comparing the recorded code of the input signal with the code of the output level measured through a normalised attenuator using the same input measuring device. The value of the correcting voltage is established, which ensures equality of codes of the input and output levels and the code of the established value of the correcting signal is recorded in random-access memory for correcting signals in a cell with an address which corresponds to the code of the level of the input signal. Simultaneously, a second output measuring device measures the level of the output signal of the amplifier and records the code of that level into random-access memory for output levels in a cell with an address which corresponds to the code of the level of the input signal. When generating correcting signals for compensating for current deviations of characteristics from the normal value, the input measuring device measures the level of the input signal. The code of the measured level is assigned the status of the address of cells of random-access memory and over a period of time equal to the lag time of signals on the envelope curve in the amplifier channel, the code of the current level of the output signal measured by the output measuring device and the code of the level of the output signal are simultaneously read form the cell of the random-access memory for output levels with the address-code of the level of the output signal. The levels are compared and deviations are normalised by dividing the difference between read output levels by the level of the output signal read from the random-access memory for output levels, and the current value of the correcting signal is generated from the value of the normalised deviation of the transmission coefficient from the normal value. |
Two-cascade hf-amplifier / 2421882 Two-cascade HF-amplifier includes input transistor (1) as per the diagram with common emitter the base of which is connected as to alternating current to signal source (2) and the first output of setup circuit of static mode of the first cascade (3), the output transistor (4) the emitter of which is connected to collector of input transistor (1); base is connected to the second output of setup circuit of static mode of the first cascade (3), and collector is connected through correction inductance (5) to bus (6) of power source, the second amplification cascade (7) the input of which is connected through separating capacitor (8) to collector of output transistor (4) and to the first output of resistor of setup circuit of static mode of the second cascade (9). The second output of resistor of setup circuit of static mode of the second cascade (9) is connected to emitter of output transistor (4). |
Differential amplifier / 2421881 Differential amplifier includes the first (1) and the second (2) input transistors to emitters of which there connected is the first (3) and the second (4) p-n junctions, current-stabilising bipole (5) connected between common node of the first (3) and the second (4) p-n junctions and the first (6) bus of power sources, the first (7) resistor of collector load the first output of which is connected to collector of the first (1) input transistor and the first output of device; the second (8) resistor of collector load, the first output of which is connected to collector of the second (2) input transistor and the second output of the device, and the second (9) bus of power sources. To the diagram there introduced is the first (10), the second (11), the third (12) and the fourth (13) additional transistors; base of the first (10) additional transistor is connected to base of the first (1) input transistor; collector of the first (10) additional transistor is connected to collector of the first (1) input transistor; base of the second (11) additional transistor is connected to base of the second (2) input transistor; collector of the second (11) additional transistor is connected to collector of the second (2) input transistor; emitter of the first (10) additional transistor is connected to collector of the third (12) additional transistor; base of the third (12) additional transistor is connected to emitter of the first (1) input transistor; emitter of the third (12) additional transistor is connected to current-stabilising bipole (5); emitter of the second (11) additional transistor is connected to collector of the fourth (13) additional transistor; base of the fourth (13) additional transistor is connected to emitter of the second (2) input transistor; emitter of the fourth (13) additional transistor is connected to current-stabilising bipole (5); the second output of the first (7) resistor of collector is connected to the second (9) bus of power sources through the first (14) additional resistor and through the first (15) additional capacitor to emitter of the first (10) additional transistor; the second output of the second (8) resistor of collector load is connected to the second (9) bus of power sources through the second (16) additional resistor and through the second (17) additional capacitor to emitter of the second (11) additional transistor. |
Broadband amplifier / 2421880 Broadband amplifier includes input transistor cascade (1) the main input (2) of which is connected to signal source (3); common output (4) is connected to the first (5) bus of power sources, and collector output (6) is connected to output (7) of device and the first output of bipole of collector load (8), the second output of which is connected to the second (9) bus of power sources. To the diagram there introduced is the first (10) additional transistor the collector of which is connected to collector output (6) of input transistor cascade; base is connected to output of the first (11) potential bias circuit; emitter is connected through the first (12) current-stabilising bipole to the second (13) potential bias circuit; the second output of bipole of collector load (8) is connected to the second (9) bus of power source through the second (14) current-stabilising bipole and through the first (15) auxiliary bipole to low dynamic resistance to emitter of the first (10) additional transistor. |
Broadband amplifier / 2421880 Broadband amplifier includes input transistor cascade (1) the main input (2) of which is connected to signal source (3); common output (4) is connected to the first (5) bus of power sources, and collector output (6) is connected to output (7) of device and the first output of bipole of collector load (8), the second output of which is connected to the second (9) bus of power sources. To the diagram there introduced is the first (10) additional transistor the collector of which is connected to collector output (6) of input transistor cascade; base is connected to output of the first (11) potential bias circuit; emitter is connected through the first (12) current-stabilising bipole to the second (13) potential bias circuit; the second output of bipole of collector load (8) is connected to the second (9) bus of power source through the second (14) current-stabilising bipole and through the first (15) auxiliary bipole to low dynamic resistance to emitter of the first (10) additional transistor. |
Differential amplifier with high-frequency compensation / 2421879 Differential amplifier (DA) includes the first (1) and the second (2) input transistors (T) the emitters of which are connected through the first (3) current-stabilising bipole (CB) to the first (4) bus of power supplies (PS), the first (5) resistor of collector load, the first output of which is connected to output (6) of DA, collector of the second (2) input T and collector of the first (7) auxiliary T, the second (8) CB connected between emitter of the first T (7) and the first (4) bus of PS; at that, collector of the first (1) input T is connected to the second (9) bus of PS. The second output of resistor of collector load (5) is connected to the second (9) bus of PS through the first (10) additional resistor and connected to emitter of the first T (7) through the first (11) balancing capacitor; at that, base of the first T (7) is connected to the first (12) circuit of setup of its static mode. |
Cascode broadband amplifier / 2421878 Invention can be used as amplification device of analogue signals, in structure of analogue microcircuits of various functional purpose (e.g. SiGe-operational amplifiers (OA), microwave amplifiers, comparator units, continuous voltage stabilisers, etc.). Cascode broadband amplifier includes input voltage-to-current converter (1) the current output of which is connected to emitter of output transistor (2); the main non-inverting current repeater (3) with low-ohmic current input (4) and potential input (5) determining static potential of low-ohmic current input (4). At that, current output (6) of the main non-inverting current repeater (3) is connected to emitter of output transistor (2), potential bias circuit (7) connected to potential input (5) of the main non-inverting current repeater (3), bipole of collector load (8), the first output of which is connected to collector of output transistor (2) and to output of the device, and power supply bus (9). The other output of bipole of collector load (8) is connected to low-ohmic current input (4) of the main non-inverting current repeater (3) and through additional resistor (10) is connected to power supply bus (9); at that, base of output transistor (2) is connected to the first (11) potential matching circuit. |
Differential amplifier with high amplification ratio / 2420864 Differential amplifier comprises an inlet differential cascade (DC) (1) with the first (2) and the second (3) current outlets, the first outlet transistor (T) (4), the base of which is connected to the first (2) current outlet of DC (1) and the first outlet of a load dipole (5), the first current-stabilising dipole (CSD) (6), connected to an emitter of T (4), a power supply voltage source (PSVS) (7). The circuit includes the first and second additional outlet T (8), T (9), the emitter T (8) is connected with the emitter T (4), a collector of which is connected to the PSVS (7) via the first additional dipole (10) and is connected to the base T (9), the emitter of which is connected to the second outlet of the load dipole (5), and via the second additional dipole (11) is connected to the base T (8) and the device outlet, besides the collector T (9) is connected to the PSVS (7). |
Device for modulating amplitude of powerful signals / 2307452 Powerful signals amplitude modulator contains two bipolar transistors, four electric filters, transformer, two resistors, shift source, input of device for signal being modulated, input of device for modulating signal, while output of third electric filter is the output of device. |
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