High-voltage crowbar circuit with cascade-triggered series ignitrons

Patent · Tue Nov 04 00:00:00 EST 1980

OSTI ID:7245378

Baker, W R

A series string of ignitrons for switching a large current at high voltage to ground. Switching is initiated by means of a negative trigger pulse applied to the cathode of the lowest voltage level ignitron next to ground to draw ground current through diodes in the ignitor circuit. The trigger pulse is applied thereby to the next higher ignitron cathode and sequentially to the remainder of the ignitrons in the string through diodes in respective ignitor circuits. Full line voltage is held off of nonconducting diodes and ignitrons by means of varistors. 1 fig.

• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4232351; A
• Application Number: PPN: US 6-000740
• OSTI ID: 7245378
• Resource Relation: Patent File Date: 3 Jan 1979
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
IGNITRONS
TRIGGER CIRCUITS
ELECTRIC GROUNDS
SEMICONDUCTOR RESISTORS
SWITCHES
ELECTRICAL EQUIPMENT
ELECTRON TUBES
ELECTRONIC CIRCUITS
EQUIPMENT
GAS DISCHARGE TUBES
PULSE CIRCUITS
RECTIFIER TUBES
RESISTORS
SEMICONDUCTOR DEVICES
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)