A low-impedance high-voltage bipolar pulse former

The results on the formation of bipolar pulses with amplitudes of up to 100 kV, a duration of 2 ns, and a pulse repetition rate of 100 Hz across a 12.5-Ω load are presented. Lines with a characteristic impedance of 6.25 Ω were switched using multichannel ring switches with 70-mm-diameter electrodes...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2017-07, Vol.60 (4), p.541-544
Main Author: Efremov, A. M.
Format: Article
Language:English
Subjects:
Electric potential
Electrical Engineering
Electrodes
Electronics and Radio Engineering
Impedance
Internal energy
Measurement Science and Instrumentation
Physical Chemistry
Physics
Physics and Astronomy
Pulse repetition rate
Sharpening
Switches
Switching
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Summary:The results on the formation of bipolar pulses with amplitudes of up to 100 kV, a duration of 2 ns, and a pulse repetition rate of 100 Hz across a 12.5-Ω load are presented. Lines with a characteristic impedance of 6.25 Ω were switched using multichannel ring switches with 70-mm-diameter electrodes in a nitrogen medium at a pressure of 40–60 atm. At a pressure of 40 atm, the rms deviation of the operation time of the sharpening switch reaches 40 ps at a voltage-pulse rise rate of 7 × 10 13 V/s at the electrodes. As the pressure increases, the stability of the output bipolar pulses deteriorates; this is probably associated with a disturbance of the multichannel-switching mode in the sharpening switch. The performed simulation of the pulse-former operation showed that the energy loss in the switches reaches 40% of the stored energy in the output line of the Sinus-160 generator.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441217040030