SU444310A1 - High Voltage Nanosecond Pulse Generator with Voltage Multiplication - Google Patents

Description

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The invention relates to a pulse technique and can be used to generate high-power high-voltage rectangular pulses.

The generator of high voltage nanosecond pulses with voltage multiplication is known, containing successively connected two-step forming lines with output potential terminals, the beginnings of the first steps of which are connected to common controlled switch via chokes, and uncontrolled switches. Such an oscillator has a low stress ratio and provides them with LOW frequency pulses.

The purpose of the invention is to increase the voltage multiplication factor and frequency.

For this, unmanaged switches are included between the potential leads of the forming lines of both stages.

The schematic diagram of the proposed generator is shown in principle; it contains two-step forming lines 1 and: 2, 3 and 4, 5 and 6, 7 and 8 connected in series, the potential outputs of which include uncontrolled switches 9 , 10, 11 and 12 respectively. Beginnings steps 2, 4,

6, 8 through the chokes 13, 14 and 15 are connected to a common controllable switch 16.

Lines 1, 3, 5, 7 contain charging resistors 17, 18, 19, and 20, and lines 2, 4, 6, 8 -

split chokes 21, 22, 23 and 24 respectively. The load generator is a resistor 25.

Generator works as follows. After charging lines 1-8 through resistors

17-20 and 26 with a high voltage Eo, the controlled switch 16 is started. The oscillating discharge of lines 2, 4, 6, 8 and 8 begins through the chokes 21, 22, 23, and 24. After a time corresponding to the period curvature

oscillations, the circuit formed by the inductance of the chokes and the equivalent capacitance of the lines 2, 4, 6, 8, The voltage and the line of charge will be completely reversed to a potential equal to Eg. Thus, between the electrodes of the uncontrolled switches 9, 10, 11 and 12, which were before the start under a zero potential difference, a double charge voltage of 2Eo appears. Breakdown of switches occurs

somewhat before the complete reversal. After the breakdown of one of the switches 9, 10, 11, 12 on the others. The result is a multiple overvoltage, resulting in an instantaneous breakdown of all the switches. After the breakdown of all switches

on the load resistor 25, a rectangular, impulse amplitude of И and pEo is formed, where n is the number of two-step liii. The pulse duration is determined by the time-of passage of the wave front from the switch 16 to the beginning of the lines and back.

Subject invention

A high-voltage nanosecond IMPulse generator with voltage multiplication, containing two consecutive two-stage forming lines at the output with potential leads, the beginning of the first stages of which are connected through chokes to a common managed switch, and unmanaged switches, because In order to increase the voltage multiplication factor and frequency, the uncontrolled, the switches are connected between the potential leads of the forming lines of both stages.

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