High voltage pulse generator

Patent · Tue Mar 08 00:00:00 EST 1977

OSTI ID:7222021

Fasching, G E

An improved high-voltage pulse generator is described which is especially useful in ultrasonic testing of rock core samples. An N number of capacitors are charged in parallel to V volts and at the proper instance are coupled in series to produce a high-voltage pulse of N times V volts. Rapid switching of the capacitors from the paralleled charging configuration to the series discharging configuration is accomplished by using silicon-controlled rectifiers which are chain self-triggered following the initial triggering of a first one of the rectifiers connected between the first and second of the plurality of charging capacitors. A timing and triggering circuit is provided to properly synchronize triggering pulses to the first SCR at a time when the charging voltage is not being applied to the parallel-connected charging capacitors. Alternate circuits are provided for controlling the application of the charging voltage from a charging circuit to be applied to the parallel capacitors which provides a selection of at least two different intervals in which the charging voltage is turned ''off'' to allow the SCR's connecting the capacitors in series to turn ''off'' before recharging begins.

• Assignee: Energy Research and Development Administration
• Patent Number(s): US 4011463
• OSTI ID: 7222021
• Resource Relation: Patent File Date: Filed date 12 Jun 1975; Other Information: PAT-APPL-586,460
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
HIGH-VOLTAGE PULSE GENERATORS
DESIGN
CAPACITORS
ROCK DRILLING
TEST FACILITIES
THYRISTORS
TIMING CIRCUITS
TRIGGER CIRCUITS
DRILLING
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FUNCTION GENERATORS
PULSE CIRCUITS
PULSE GENERATORS
SEMICONDUCTOR DEVICES
420800* - Engineering- Electronic Circuits & Devices- (-1989)