SU604138A1 - High-power voltage pulse generator - Google Patents

Description

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The invention relates to a pulse technique, in particular, to a generator of voltage pulses.

Known for generators are rotary square voltage pulses with a duration of several m1-hl seconds, containing a switch, a pulse transformer and, as an energy storage device, an artificial formative line with a characteristic impedance equal to the load resistance l l}. The output inductance of the forming line is shunted with ballast resistance to reduce the duration of the leading edge of the pulse.

However, the known generator has an insufficient duration of the leading edge of the pulse.

The closest in technical essence and the achieved result to the proposed is a generator of powerful voltage VIM pulses containing an energy storage, main and auxiliary switches, the inputs of which are connected to one of the energy storage terminals, and a pulse transformer, the middle point of the primary winding of which is connected to the second output energy storage, and one of the ends of the primary winding of the connection-H with the input of the main switch 27. The load is connected to the secondary winding of the pulse transformer.

The disadvantage of the known generator is the long duration of the front pulse phase (not less than 5 O µs), due to the inertial properties of the pulse transformer. In addition, a significant portion of the pulse power is lost on the ballast resistance.

The goal of the invention is to reduce the length of the leading edge of the pulse.

The goal is achieved by the fact that in the generator of powerful voltage pulses containing an energy storage, primary and auxiliary switches, the input of which is connected to one of the energy storage terminals, and a pulse transformer with a load connected to the secondary winding of the transformer, the midpoint of the primary winding of which is connected ..incCLp “by the output of the storage accumulator, and one of the ends of the primary winding is connected to the input of the main switch, the output of the Auxiliary switch is connected to the other end of the primary between primary winding of the pulse transformer via a parallel resistor and capacitor. Fig. 1 is a schematic diagram of a voltage-driven voltage pulse generator; in fig. 2 - temporary diagrams of currents. The power voltage pulse generator contains an energy storage device 1 connected to input 2 of main switch 3 and output 4 of an auxiliary switch Si. The other end of the storage device is connected to the middle point of the primary switch 6 of pulse transformer 7. Primary winding 6 is connected between outputs 8 of the main switch 3 and the code 9 of the auxiliary switch 5 through a parallel connected resistor TO and a capacitor 11. The load 12 is connected to the secondary winding 13 of the transformer 7. Terminal 14 is designed for triggering its pulse from an external source (not shown). At the moment: time and ftl, “pulse” switches on switches 3 and 5, a current pulse from energy storage 1 passes through them (see, fig. 2), In time interval j - 2 О i 2, passing through switches 3 and 5 , directed counter and mutually compensate each other, therefore the load current i c is almost zero. When current "2" flows through the switch 5, the capacitor 11 is charged, the charge time of which T is determined by the known ratio T ЗТ С where K is the reduced load resistance 12, C is the capacitance of the capacitor 11, and is equal to -12 leading edge of current pulse i J "At time ij, the discharge of capacitor II ends, the current j through switch 5 becomes equal to zero, and the current ц induced by current j appears in the load almost intermittently (yes, time is not more than 5 µs). which becomes equal to the current (. The resistor 10 serves to discharge the capacitor 11 in a pause by pulses. Ignitrons are used as switches 3 and 5. Besides, tyrnstor modules can be used. The alternator provides powerful voltage pulses of rectangular Forms with a leading edge with a duration of the order of 5 MKS with a pulse duration of several milliseconds with almost no loss of pulsed power Formula a a b R e e n A high-power voltage pulse generator containing at the auxiliary switches, the inputs of which are connected to one of the output terminals of the anergy storage device, to the pulse transformer with a load connected to the secondary winding, the midpoint of the primary winding of which is connected to the second output terminal of the power supply circuit, and one of the ends of the primary winding is connected with the input of the main switch, characterized in that, with the aim of reducing the dvkhotelyuschestv of the leading front in the loop, the output of the auxiliary switch is connected to the other end of the primary switch th transformer torus via a parallel resistor and capacitor, sources of information, received in VNITI; mania during examination; 1, USSR Authors ’List No. 296232, kp. H 03 K; 3/00, 12.11.71 2.I.I.Shch.M. Pulse and condition systems, M., Soe, Radio, 1973, p. 213.

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