SU1356217A1 - Method of generating pulses by magnetothyristor oscillator and magnetothyristor oscillator - Google Patents

Abstract

The invention relates to the generation of electrical oscillations. The purpose of the invention is to obtain pulses of increased temporal stability in burst-pulse operation. The method of generating pulses by a magnetic thyristor generator if (Oh phi (f

Description

provides for: charge of the storage capacitor (NC) with its subsequent discharge and biasing in the opposite direction of the switching throttle of the magnetic compression link (MZS); measuring the voltage on the NC in the time interval from the moment of the end of the recharge to the NC in the previous cycle until the beginning of its charge in the current cycle. At the same moment of time, the voltage of the power source is measured, and the switching of the throttle of the MZS is switched in pause before the charge of the NR voltage is proportional to the sum of the measured voltages.

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The invention relates to the generation of electrical oscillations and can be used to generate pulses of increased temporal stability using magnetic thyristor generators.

The purpose of the invention is to increase the stability of the duration of the output pulses during burst-pulse operation.

FIG. 1 is an electrical schematic diagram of a magnetic thyristor generator; FIG. 2 is a diagram of a synchronizer; in FIG. 3; a diagram of a strobe pulse generator; in FIG. 4 is a diagram of an adder, FIG. 5 is a timing diagram of the operation of the device, FIG. 6 is a graph of the magnetization curves of switching chokes.

The method of generating pulses by a magnetically thyristor generator includes charging the storage capacitor with its subsequent discharge and biasing in the opposite direction of the switching throttle of the magnetic compression element, in which the voltage on the storage capacitor is measured in the time interval from the end of its reload in the previous cycle to the start of its charge in the current cycle, at the same time, the voltage of the power source is measured, the magnetization of the switching throttle of the magnetic compression link derivatives into pause to

56217

The voltage on the NC is measured in the interval. From the moment it was recharged in the previous cycle to the moment it was charged in the current cycle, by measuring the leakage current. The generator that implements this method is performed on two thyristors 3, 5, two throttles x 2 and 4, transformer 6 and contains a voltage meter 9, a synchronization unit 11, a gate generator 14, a pulse generator, 15 a pulse generator 16 on two thyristors 43 and 44, resistors, capacitors and diodes shown in the schematic diagram. 2 sec. f-ly, 6 ill.

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charge capacitor capacitor voltage proportional to the sum of the measured voltage.

The voltage on the storage capacitor is measured from the time it ends up being recharged in the previous cycle to the time it is charged in the current cycle by measuring the leakage current.

The magnetically thyristor generator for the implementation of the proposed method (Fig. 1) contains a power bus 1, a first choke 2, a first thyristor 3, a second choke 4, a second thyristor 5. transformer 6, the first of which is connected to the common bus, the first and second capacitors 7. 8, the voltage meter 9, the load 10, the synchronizer 11, the first plate of the first capacitor 7 is connected to the cathode of the first thyristor 3. parallel to the secondary winding of the transformer 6 is connected the second capacitor 8, the first plate of which is connected to The second terminal of the second drop 4, the second terminal of which is connected to the load 10, the second output bus connected to the second plate of the second capacitor B, the control inputs of the first and second thyristors 3 and 5 are connected respectively to the first and second outputs of the synchronizer 11, the leakage current sensor 12 of the first con 5, densator 7, connected between the WTO

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the swashplate of the first capacitor 7 and the common bus, the third choke 13, the strobe pulse former 14, the adder 15 and the voltage pulse shaper 16, the first inputs of the voltage meter 9 and the strobe pulse former 14 are connected to the second facing of the first capacitor 7, the second meter input 9 voltage to the second output of the synchronizer 11, the third input to the output of the strobe pulse generator 14 and the first input of the adder 15, and the output to the second input of the adder, the third input of which is connected to the power bus 1, and the output to the first input f The luminer 16 voltage pulses, the second input of which is connected to the first output of the synchronizer 11 and the second input of the strobe pulse shaper 14, the third input of the voltage pulse shaper 16 is connected to the third output of the synchronizer, and the output is connected to the first output of the third winding of the transformer 6, the second The first choke 2, the first thyristor 3, the third choke 13. The second thyristor 5, the cathode of which is connected to the second terminal of the primary winding of the transformer 6.

The synchronizer 11 contains a series-connected master oscillator 17, a pulse shaper 18, an AND 19 element, a first delay element 20 and a second delay element 21, an output of the master oscillator 17 connected to the second input of an And 19 element, and the outputs of an And 19 element of the first delay element 20 and the second delay element 21 are respectively the first, third and third outputs of the synchronizer 11.

The strobe pulse shaper 14 contains a standby multivibrator 22, AND 23, a differentiation circuit 24, whose input is the first input of a strobe pulse shaper, a pulse shaper 25 and an RS-flip-flop 26, the output of the standby multivibrator 22 is connected to the first input of the And 23 element, the second the input of which is connected to the output of the pulse driver 25, the input of which is connected to the output of the differentiating circuit 24, and the output of the element 23 is connected to the first input of the RS flip-flop 26, the second

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the input of which is connected to the input of the waiting multivibrator 22 and is the second input of the strobe pulse generator 14, the output of which is the output of the RS flip-flop 26.

The adder 15 contains a series-connected differential amplifier 27. An analog switch

28 and a power amplifier 29, the second input of the analog switch 28 is the first input of the adder 15, the output of the power amplifier 29 is connected via a voltage divider 30 to the first input of the differential amplifier 27, and the second input of the differential amplifier 27 is connected to the first terminals of the first and second resistors. 31 and 32, the second terminals of which are respectively the second and third inputs of the adder 15, the second input of the differential amplifier 27 is connected via the third resistor 33 to the common bus, the output of the amplifier

The power is the output of the adder 15.

The voltage meter 9 is provided on a differential amplifier 34 biased by a capacitor 35, the first and second keys 36 and 37, the second key input being the first input of a voltage meter, parallel to the capacitor 35 is the first key 36, the control input of which is the second meter input 9 voltage, the third input of which is the control input of the second switch 37, and the output connected through the first resistor 38 to the inverse input of the differential amplifier 34, the output of which is the output of the voltage meter 9, and the non-inverting input is connected via the second resistor 39 to the common bus.

A leakage current sensor 12 is provided on a resistor 40, the first and second terminals of which are the corresponding inputs of the current sensor 12 and are bridged by the first and second anti-parallel diodes 41 and 42.

The voltage pulse generator 16 consists of the first and second anti-parallel thyristors 43 and 44, the first cathode is the first input of the pulse generator, the control inputs of the first and second thyristors 43 and 44 are the second and third respectively.

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the inputs of the driver 16 voltage pulses, the cathode of the first thyristor .43 is connected. Through the capacitor 45 to the common bus, the anode of the first thyristor 43 is connected through the inductor 46 to the output of the driver 16 of the voltage pulses. Output buses are connected to the load, for example, inductively connected to an oscillating circuit.

The generator works as follows

In the initial state, the capacitor 7 is charged to a certain voltage. With the arrival of the sync pulse to the thyristor 5 (FIG. Za), the capacitor 7 is recharged through the choke 13, the thyristor 5, the transformer 6 into the capacitor 8 (interval t - 1:, FIG. 5c e). This voltage is applied to choke 4, and at time t2 it is pressed (point A, fig. 6). There is a transfer of the capacitor 8 to the load 10 - oscillatory system (interval t 2 t ,,) and the formation of an output radio pulse in it. At time t, j, choke 4 is out of saturation and capacitor 8 is discharged through -transformer 6 to condensate 7, charging it to a certain negative voltage value (interval C 3 - t, Fig. 5c, e). At time t (the end of the recharge of the storage capacitor), the signal from the gate driver 14 includes a totalizer 15 and a voltage meter 9 measuring the leakage voltage of the capacitor 7 from the leakage current sensor 12.

The leakage current sensor 12 is designed in such a way that it does not react to a large 1-dm current of the storage capacitor, since at this time the diodes 41 and 42 are open. Through the sensor 12, the discharge current (interval t - t, t ,, - t, Fig. 5g) and the charging current (interval t - t, Fig. 5g) of the capacitor 7 flow. When the capacitor 7 is set, the voltage recharge (t - t interval, fig 5v) S diodes are closed and a small leakage current of capacitor 7 flows through resistor 40. At the same time, values of resistor 40 can be chosen in such a way that the voltage drop across it does not open diodes 41 and 42, then the resistance the diodes are large (on the order of hundreds of kilo) and can be with pain

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With the degree of accuracy to assume that the entire leakage current flows through this resistor (Fig. 5e), the Integrad voltage drop across it (interval t - t, Fig. 5e) can determine the change in the voltage across the capacitor

7 due to leakage current. For this, the voltage from the leakage current sensor 12 is fed to a voltage meter 9 and a gate driver 14.

The voltage meter 9 is made on the basis of a differential amplifier 34 operating in an integrated mode. By entering the switch 36, the discharge clock pulse has zeroed the integrator, the capacitor 35 is discharged (the moment t is, fig. 5i). Next, the strobe pulse shaper 14 produces a pulse, the duration of which is equal to the time interval from the end of the recharge of capacitor 7 (time t, fig. 5c) to the sync pulse on thyristor 3 (time t, fig. 5c). This signal from the driver 14 (Fig. 5g) is fed to the adder 15 and the key 37 of the voltage meter 9. The key 37 opens, and the leakage voltage taken from the sensor 12 is integrated. The integrated leakage voltage from the output of the differential amplifier 34 is summed in the switched-on accumulator 15 with the supply voltage removed from the power supply bus 1. A signal proportional to their sum from the adder 15 is applied to the voltage pulse shaper 16, charging the capacitor 45. With the arrival of the sync pulse on the thyristor 3 (time t, -, Fig. 56), the capacitor charges, 7 (Fig. 5c), the operation of the adder 15 and the voltage meter 9 terminates and the voltage pulse is generated in the driver 16 as follows.

By the sync pulse arriving at the control input of the thyristor 44, the capacitor 45 is discharged to the third winding of the transformer 6, and at the output of the driver 16 the formation of the voltage control pulse begins (interval t - t, FIG. 5L). This voltage by means of the third winding of the transformer 6 charges the capacitor 8 (Fig. 5e). After the capacitor 45 is completely recharged to the capacitor 8 (moment tg, Fig. 5l), the sync pulse (Fig. B) enters the control input of the thyristor 43,

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the thyristor 43 is turned on and the recharge of the capacitor 8 is reversed to the capacitor 45 of the driver 16 (up to the moment c, Fig. 5l),

The shape of the voltage control pulse is shown in FIG. 5l. The same impulse is also on the capacitor 8. But its polarity is such that it magnifies choke 4 in the opposite direction (Fig. 5e).

As a result, a voltage pulse is applied to the choke 4, which translates the throttle core from point B to point B (FIG. 6), i.e. state corrected according to the supply voltage and leakage voltage of the storage capacitor.

With the arrival of the next clock pulse on the thyristor 5, the process described above is repeated.

Shaper 14 (Fig. 4) works as follows. Sync pulses (Fig. 5a, b) are charged and discharged by a capacitor 7 through the leakage current sensor 12. The voltage that is formed on the sensor 12 is fed to the first input of the strobe pulse generator 14, i.e. on the differentiating circuit 24 (Fig. 5). The differentiated voltage is supplied to the pulse shaper 25, which produces a sequence of short pulses from positive differentiated pulses.

The second gate of the strobe pulse shaper 14 is supplied to the sync pulses from the input of the thyristor 3 and is fed to the input of the waiting multivibrator 22 and to the R input of the RS flip-flop 26, and has folded it. The signals from the first output of the synchronizer are fed to the input of the multivibrator 22 and from its output to the input of the element And 23, to another input of which the signal comes from the output of the former 25. From the output of the element And 23, a pulse corresponding to the end of the reboot of the capacitor 7 and is applied to the S input of RS flip-flop 26, set to one. With the arrival of the next charge clock, the processes described above are repeated. As a result, a pulse is removed from the output of the imaging unit 14, the duration of which is equal to the time interval

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nor from the end of the recharge of capacitor 7 to the charge clock pulse.

Claims (9)

1. A method of generating pulses by a magnetically thyristor generator, including a charge of a storage capacitor followed by its discharge, and biasing in the opposite direction the switching compression thrusts of the magnetic compression link, in order to increase the stability of the duration of the output pulses batch-pulse mode, the voltage is measured at the same time from the end of the recharge in the previous cycle to the time of its charge in the current cycle, the voltage of the power source is measured at the same time, the bias of the magnetic junction of the magnetic switch of the switching circuit is paused to the accumulative capacitor voltage proportional to the sum of the measured voltages, 2. A method according to claim 1, characterized in that the voltage on the storage capacitor is measured in the time interval from the end of its recharge in the previous cycle to the moment of its charge in the current cycle by measuring the leakage current. 3. Magnetic thyristor generator, containing a power bus, the first choke, the first thyristor, the second choke, the second thyristor, a transformer, the first output of the primary winding of which is connected to the common bus, the first and second capacitors, a voltage meter, output buses, a synchronizer, the first the front capacitor plate is connected to the cathode. the second thyristor, parallel to the secondary winding of the transformer, is connected a second capacitor, the first lining of which is connected to the first output of the second throttle, the second output of which is connected via an oscillating system with the second facing of the second capacitor, the control inputs of the first and second thyristors are connected respectively to the first and second outputs of the synchronizer, different 91 By the fact that, in order to increase the stability of the pulse duration BbixonHf x under burst-pulse operation, the leakage current sensor of the first capacitor connected between the second lining of the first capacitor and the common bus is inserted into it, the third choke, the strobe pulse shaper, the adder and the pulse shaper voltage, the first inputs of the voltage meter and the strobe pulse former are connected to the second plate of the first capacitor, the second input of the voltage meter to the second output of the synchronizer, the third input to you the strobe pulse shaper and the first input of the adder, and the output to the second input of the adder, the third input of which is connected to the target power, and the output to the first input of the voltage pulse shaper, the second input of which is connected to the first output of the synchronizer and the second input of the the strobe puller, the third input of the voltage pulse generator is connected to the third output of the synchronizer, and the output is connected to the first output of the third winding of the transformer, the second output of which is connected to the common bus, connected in series the first choke, the first thyristor, the third choke, the second thyristor, the cathode of which is connected to the second output of the primary winding of the transformer. 4. Magnetic thyristor generator pop. 3, characterized in that the synchronizer contains a series-connected master oscillator, pulse shaper, AND element, the first delay element and a second delay element, an output of the master oscillator is connected to the second input of the AND element, and the outputs of the AND element of the first and second delay elements are respectively the first, second and third outputs of the synchronizer. 5. The thyristor magnetic generator according to claim 3, characterized in that the strobe pulse pulse generator COB contains a standby multivibrator, the AND element, the differentiating circuit, the input of which is the first input of the strobe pulse former, the pulse shaper and the RS trigger, five 0 0 five 0 five 0 five 17,10 running: a multivibrator. connected to the first input of the element I, the second input of which is connected to the output of the pulse former, the input of which is connected to the output of the differentiating circuit, and the output of the element I connected to the first input of the RS flip-flop multivibrator and is the second input of the pulse shaper, the output of which is the output of the RS flip-flop. 6. Magnetic thyristor generator according to claim 3, characterized in that. the adder contains a series-connected differential amplifier, an analog switch and a power amplifier, the second input of the analog switch is the first input: the adder, the output of the power amplifier is connected via a voltage divider to the first input of the differential amplifier, and the second input of the differential amplifier is connected to the first terminals of the first and second resistors, the second terminals of which are respectively the second and third inputs of the adder, the second input of the differential amplifier is connected to of a third resistor to the common bus, the output of the power amplifier is the output of the adder. 7. A magneto thyristor generator according to claim 3, characterized in that the voltage meter is made on a differential amplifier, shunted by a capacitor, first and the second switch, the input of the second switch is the first input of the voltage meter, parallel to the capacitor is included the first switch, the control input of which is the second input of the voltage meter, the third input of which is the control input of the second switch, and the output is connected through the first resistor to the inverted input of the differential amplifier, the output of which is the output of a voltage meter, and the non-inverting input is connected via a second resistor to the common bus. 8. Magnetic thyristor generator pop, 3, characterized in that the leakage current sensor is made on a resistor, the first and second terminals of which are the inputs of the current sensor and are shunted by the first and second eleven counter-parallel diodes included. 9. The magnetically thyristor generator of clause 3, of which is l and h a and s. Since the voltage pulse shaper consists of the first and second anti-parallel thyristors, the cathode of the first is the first input of the pulse shaper 1356217 12 the co-voltages controlling the inputs of the first and second thyristors are the second and third inputs of the voltage pulse generator, respectively; the cathode of the first thyristor is connected via a capacitor to the common bus; the anode of the first thyristor is connected via the inductor of the voltage pulse former. // // TT JfftJC / 71. 3.28 / V / mjpi / c / r.  / T7c / at / crrr. 27 С 24 cfJu.Z 25 23 -0 fie.Z j thirty usdd Jz T7 53 five 28 Z9 figl n (flue s Editor I.Rybchenko Compiled by L. Simonova Tehred A. Kravchuk Proofreader G. Reshetnik Order 5811/54 Circulation 900 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 In Fig 6