High-power microwave impulses generator

FIELD: electricity.

SUBSTANCE: high-power microwave impulses generator in the radar transmitters with grid control devices includes an impulse shaper (1), an exciter (2), a microwave impulse amplifier (3), a matching valve (4), a control unit (5), a modulator driver (6 ), a modulator (7), a microwave unit (8).

EFFECT: improved shape of the microwave impulses, when excluding the influence of the stray modulator parameters on them, which is considerably simplified due to this, that is achieved by separating circuits, supplied to the microwave device input, and the grid control circuit, so that the amplified impulse is supplied to the pre-opened device input.

5 dwg

 



 

Same patents:

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to the field of automatic equipment and computer facilities, cryptographic coding and information transmission and can be used for creation of generators of random sequences of impulses of long non-repeating duration. The device contains the timing unit, the control and configuration unit, the unit of generation of pseudorandom sequences, the unit of software setting of structure of feedback and initial condition of the generation unit, the unit of software setting of the code of structure of output sequence, the unit of analysis of structure of output sequence, the code comparison unit.

EFFECT: providing of formation of non-repeating random sequences of long length with the characteristics determined by the software set codes of structure of output sequence.

2 dwg

FIELD: electricity.

SUBSTANCE: invention relates to facilities for formation of secondary power supplies (SPS) of the equipment of control systems of space-rocket and aircraft engineering items, and also robotic complexes. In the modulator the high-voltage output of the power unit is connected to the power input of the parametrical shaper of output impulses, to the first and the second inputs of the feedback signal amplification unit the error signals formed by the respective power supply feedback are supplied. The power unit consists of the switching unit, the control unit, the low-voltage power supply unit, the reference-voltage source, the high-voltage power supply unit, and the saw-tooth generator in turn consists of the trigger, the offset unit, DC generator, the frequency setting unit. Note that DC generator and the trigger of saw-tooth generator, and also DC generator of dead time shaper are implemented resistant to ionising radiation.

EFFECT: increase of resistance to ionisation radiations.

9 cl, 13 dwg

FIELD: electricity.

SUBSTANCE: according to the first version the impulse generator comprises a storage capacitor, a diode coupled back-to-back to an emitter-base junction of an avalanche transistor, which base is connected through a limiting resistor to the source of the cutoff voltage, a charging choke, a power supply source, at that the storage capacitor is connected by its first output to a collector of the avalanche transistor and by its second output it is connected through a load to an emitter of the avalanche transistor and common wire. According to the second version the impulse generator comprises the storage capacitor, the limiting resistor, the charging choke, which first output is connected to the power supply source and its second output is connected to the collector of the avalanche transistor, the control transistor, to which collector the second output of the limiting resistor is connected, at that the base of the control transistor through a stabilitron is connected to the emitter of the avalanche transistor and through a bypass resistor to its emitter and common wire.

EFFECT: improved operational reliability at the multiple increase of the impulse frequency.

4 cl, 4 dwg

FIELD: power industry.

SUBSTANCE: invention relates to control methods of charging devices of energy storage capacitors and can be used in electrophysical units with capacitive energy storage units. It is proposed in the control method of charging devices of a capacitive energy storage unit to change operating frequency during the initial charging phase as a function of a current voltage value of the capacitive energy storage unit, and to choose its value during the basic phase based on the required maximum power value in a charging cycle.

EFFECT: improvement of operating reliability of charging devices with dosing capacitors, use coefficient of the primary power source, as well as reduction of charging time.

4 dwg

FIELD: electricity.

SUBSTANCE: braking radiation pulse shaping device contains the generator with the inductive storage and the electrically fused series connected conductors with different diameters, the accelerating tube with the vacuum diode with the "inversed" cathode, the attenuating discharger, the diameter di and the length li of the electrically fused conductors 2 are determined by the formulas: , where di - is the diameter of the electrically fused conductor; W - the power stored in the generator; ρ - wave resistance of discharge loop; , where li - length of series connected electrically fused conductors; Si - area of their cross section, γ - specific electric resistance; ρ - wave resistance of discharge loop; k≥0.03 - empirically found proportionality coefficient.

EFFECT: shaping of a series of sequence of brake radiation impulses with the minimum size of a focal spot for registration of fast processes.

2 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: fundamentals of the invention include the usage of capacitive energy storage and a pulse-width modulation principle to increase accuracy in the maintenance of the preset parameters for deperming pulses.

EFFECT: reduced requirements to the power of supply mains, reduced weight and dimensions, high efficiency factor, ease of maintenance, noiseless operation and increased reliability.

2 cl, 4 dwg

FIELD: radio engineering, communication.

SUBSTANCE: device comprises four Schmitt triggers, an arbitrarily shaped oscillation source, three two-way switches, a dc voltage source, two voltage dividers, an integrator, a signal multiplier, two subtractors and an adder.

EFFECT: generating a sequence of two rectangular pulses while enabling variation of duration and interval between the pulses in a wide range.

2 dwg, 1 tbl

FIELD: physics, control.

SUBSTANCE: invention relates to transistor control and can be used in automation, telemechanics and robotics. A transformer technique for controlling a transistor is characterised by that the output controlled power circuit of the transistor is galvanically decoupled at the base with the low-ampere control circuit by transformer coupling of the secondary coil of the transformer, which may or may not have a core, wherein the control circuit has a catcher as the primary coil of the transformer, which may have a power supply independent of the controlled circuit.

EFFECT: providing reliable isolation between a control circuit and a controlled circuit.

2 dwg

FIELD: electricity.

SUBSTANCE: invention is used in electrical engineering. Matching of the three-phase three-wire power line with electric load is achieved as a result of compliance with certain conditions which can seasonally change as a result of change of primary parameters of three-phase three-wire power line determined in view of the size of sag of each wire of this power line. Seasonal change of sag of each wire is measured using distance meters. The matching consists in comparison of the valid and reference load resistance, voltages at the ends of the line or currents coming to a load. Initial data on voltage and current in the line are obtained through interfaces or sensors made in a form of voltage or current transformers, spectrum analysers, voltage dividers or alternating-current shunts. As a result of initial data processing by the processor control signals are generated for correcting elements, which can be represented by direct voltage regulators of power transformers, automated process systems, electric energy accumulators, active power sources such as low-power hydroelectric power plants or electric power plants of other types.

EFFECT: decrease of electric energy losses.

2 cl, 7 dwg

FIELD: electricity.

SUBSTANCE: invention relates to gas-discharge engineering, in particular to circuits of high-voltage impulse generators with the gas-discharge current switch and the inductive energy accumulator, and can be used at creation of high-voltage impulse generators with stable parameters. The offered invention differs in that the circuit of actuation of a gas-discharge switching device, containing an inductive energy accumulator, a gas-discharge current breaker, a control circuit, temperature control sensor, an amplifier and a voltage regulator, has the gas-discharge switching device hydrogen generator heating voltage negative feedback.

EFFECT: stabilisation of parameters of generated impulses: current amplitudes, load voltage amplitudes and the leading-edge voltage pulse time.

4 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of controlling attenuation in an oscillatory LC circuit is based on connecting an additional resistor ρ<<r to the circuit between the earth and an inductance coil, where r is the active resistance of the coil, and introducing special initial conditions for generation of controlled oscillations. External emf is introduced into the circuit, the value of which is equal to the voltage across the resistor amplified k times without inversion and periodisation of the launch modes and the initial position. The required nature of attenuation is established and observed by controlling the equivalent resistance of the circuit r*=r-ρ(k-1); if r*>0 the process is attenuating, if r*=0 the process is not attenuating and if r*<0 the process is rising.

EFFECT: establishing the required nature of attenuation in controlled oscillations.

2 cl, 1 dwg

The invention relates to electrical engineering and can be used to generate oscillations of a special form

FIELD: radio engineering, communication.

SUBSTANCE: method of controlling attenuation in an oscillatory LC circuit is based on connecting an additional resistor ρ<<r to the circuit between the earth and an inductance coil, where r is the active resistance of the coil, and introducing special initial conditions for generation of controlled oscillations. External emf is introduced into the circuit, the value of which is equal to the voltage across the resistor amplified k times without inversion and periodisation of the launch modes and the initial position. The required nature of attenuation is established and observed by controlling the equivalent resistance of the circuit r*=r-ρ(k-1); if r*>0 the process is attenuating, if r*=0 the process is not attenuating and if r*<0 the process is rising.

EFFECT: establishing the required nature of attenuation in controlled oscillations.

2 cl, 1 dwg

FIELD: physics, electronics.

SUBSTANCE: invention relates to electronic engineering and audio equipment, designed for expanding a dynamic range and can be used in audio equipment and radio systems for different purposes. Expansion of the dynamic range of equipment is achieved by including N blocks of operational amplifiers, having different gain coefficients, as well as a set of K1.N switches, which connect their own amplifier. When transmitting/recording a signal in random-access memory, they are connected so as to reduce the dynamic range of the recorded (or transmitted) signal. When processing (or receiving) a signal, a dynamic range expander also has N blocks of operational amplifiers, which are connected by K2.N switches, and restore the initial signal by connecting the corresponding blocks of amplifiers. Therefore when recording a signal, its dynamic range is reduced, and restored again when reproducing the signal, while preserving the initial dynamic range of the processed signal.

EFFECT: expansion of dynamic range of radio systems.

1 dwg

FIELD: electricity.

SUBSTANCE: high-power microwave impulses generator in the radar transmitters with grid control devices includes an impulse shaper (1), an exciter (2), a microwave impulse amplifier (3), a matching valve (4), a control unit (5), a modulator driver (6 ), a modulator (7), a microwave unit (8).

EFFECT: improved shape of the microwave impulses, when excluding the influence of the stray modulator parameters on them, which is considerably simplified due to this, that is achieved by separating circuits, supplied to the microwave device input, and the grid control circuit, so that the amplified impulse is supplied to the pre-opened device input.

5 dwg

FIELD: measurement technology; pulse stream generators.

SUBSTANCE: proposed Poisson pulse stream generator has k + 1 memory devices, comparison unit, k digital-to-analog converters, control circuit, register, counter, selector, k bell-shaped pulse generators, adder, voltage-to-current converter, and clock generator.

EFFECT: enlarged generation range of pulses adequate to ionization chamber signals.

1 cl, 2 dwg

FIELD: digital pulse engineering.

SUBSTANCE: proposed device designed for shaping pulses of desired length for each of three events during power turn-on in response to off-operation button signal incorporating provision for chatter elimination in case of skip or stop of changes in input pulses on detection enabling has first and second monostable restart multivibrators 1, 4, off-operation button 2, flip-flop 3, shaper 5 of signal responding to button-provided power turn-on which is built around capacitor 12, resistors 13, 14, diode 15 and two NAND gates 6,7, as well as AND gate 8, controllable pulse generator 9, logical 1 input, pulse signal input 10, and control input 11. Controllable pulse generator 9 is built around AND gate 16, NAND gate 17, resistors 18, 19, and capacitor 20. Device can shape input pulse during power turn-on period and function as hardware watch timer implemented in the course of forward and backward automatic interaction with system microcontroller.

EFFECT: enlarged functional capabilities of device.

1 cl, 1 dwg

Flip-flop device // 2248662

FIELD: pulse engineering, computer engineering, and control systems.

SUBSTANCE: proposed device has RS flip-flop 1, two NAND gates 2, 3, EXCLUSIVE OR gate 4, inverter 5, four resistors 6 through 9, capacitor 10, memory item 11 built around magnetic core with rectangular hysteresis loop that carries write and read coils, two diodes 12, 13, control input 14, and common bus 15.

EFFECT: reduced input current from power supply.

1 cl, 1 dwg

Flip-flop device // 2248663

FIELD: pulse engineering.

SUBSTANCE: proposed flip-flop device has RS flip-flop 1, EXCLUSIVE OR gates 2,3, NOR gates 4, 5, inverters 6, 7, 8, diodes 15, 16, resistors 9 through 12, capacitors 13, 14, memory items 17, 18 built around magnetic cores with rectangular hysteresis loop and single coil, input bus 19, and common bus 20. Combining write and read coils of memory items 17 and 18 makes it possible to increase coil number of write and read coils by 1.5 times, in each of half-coils of memory items 17 and 18, which reduces magnetizing current through cores of memory items 17 and 18 by approximately 1.5 times due to enhancing ratings of limiting resistors 11 and 12.

EFFECT: reduced input current from power supply.

1 cl, 1 dwg

Flip-flop device // 2248663

FIELD: pulse engineering.

SUBSTANCE: proposed flip-flop device has RS flip-flop 1, EXCLUSIVE OR gates 2,3, NOR gates 4, 5, inverters 6, 7, 8, diodes 15, 16, resistors 9 through 12, capacitors 13, 14, memory items 17, 18 built around magnetic cores with rectangular hysteresis loop and single coil, input bus 19, and common bus 20. Combining write and read coils of memory items 17 and 18 makes it possible to increase coil number of write and read coils by 1.5 times, in each of half-coils of memory items 17 and 18, which reduces magnetizing current through cores of memory items 17 and 18 by approximately 1.5 times due to enhancing ratings of limiting resistors 11 and 12.

EFFECT: reduced input current from power supply.

1 cl, 1 dwg

Flip-flop device // 2248664

FIELD: pulse engineering.

SUBSTANCE: proposed flip-flop device has RS flip-flops 3, 16, EXCLUSIVE OR gates 1, 2, NAND gates 5, 6, NOR gates 10, 11, resistors 4, 7, 12, 13, capacitors 14, 15, memory items 8, 9 built around magnetic core with rectangular hysteresis loop and single center-tapped coil, input bus 21, and common bus 22. Combining read and write coils of memory items 8, 9 makes it possible to increase turn number in read and write coils by 1.5 times, in each of half-coils of memory items 8 and 9, which reduces magnetizing current through cores of memory items 8 and 9 approximately by 1.5 times due to enhancing ratings of limiting resistors 4 and 7.

EFFECT: reduced input current from power supply.

1 cl, 1 dwg

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