GENERATOR FOR PRODUCING VERY-HIGH-VOLTAGE SQUARE-TOPPED PULSES

摘要

1328725 Pulse generators; modulating light COMMISSARIAT A L'ENERGIE ATOMIQUE 20 May 1971 [28 May 1970] 16097/71 Headings H3T and H4F A short high voltage pulse of variable duration is produced across a load (e.g. a Pockels or Kerr cell) between terminals 1 and 2 by connecting the terminals to respective capacitors and charging resistor circuits as shown on successively operating switching devices 8, 9, one of which is a spark gap. Initially both capacitors are charged to the supply voltage and there is no voltage across the load. Firing gap 8 reduces terminal 1 to zero voltage so that the voltage across capacitor 7 is applied to the load. Before the capacitor has discharged appreciably gap 9 is fired reducing the load voltage to zero. The capacitors now recharge at the same rate maintaining the zero load voltage. The capacitors can have separate charging supplies and the gaps may be fired by a laser beam, the path to one gap including an optical delay device. The load cell may be used in a device to trigger a laser.