High voltage pulse generator. [Patent application]

Patent · Thu Jun 12 04:00:00 EDT 1975

OSTI ID:7339398

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 the first rectifier connected between the first and second 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. The output voltage can be readily increased by adding additional charging networks. The circuit allows the peak level of the output to be easily varied over a wide range by using a variable autotransformer in the charging circuit.

• Assignee: Energy Research and Development Administration
• Patent Number(s): None
• OSTI ID: 7339398
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
ACOUSTIC TESTING
CAPACITORS
DESIGN
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FUNCTION GENERATORS
HIGH-VOLTAGE PULSE GENERATORS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
PULSE CIRCUITS
PULSE GENERATORS
ROCKS
SEMICONDUCTOR DEVICES
TESTING
THYRISTORS
TIMING CIRCUITS
TRIGGER CIRCUITS
ULTRASONIC TESTING