High power variable pulse width triggering circuits

Details High power variable pulse width triggering circuits High power variable pulse width triggering circuits

1977-02-10

1978-05-02

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307252K, 328 65, 328 67, 328 58, H03K 118, H03K 504

Patent

active

040877051

ABSTRACT:
The use of high voltage relays in variable pulse width magnetron type triggering circuits are avoided by the use of two separate pulse-forming networks. In addition, two separate banks of charging capacitors and switching transformers are employed. Separate SCR's are employed to apply charging current to either the first or the second bank of storage capacitors. Additional SCR's are employed to initiate the triggering sequence for the selected pulse-forming network and associated circuitry. The selected pulse length might be microsecond or one-quarter microsecond, with pulse repetition rates of 1,000 to 2,000 pulses per second. Accordingly, the duty cycle could be in the order of 0.001%, or less, but the output pulse power during the "on" time for the circuit might be in the order of several hundred kilowatts. During each cycle of operation, the two switching transformers and the output pulse transformer, which are both of the square or rectangular hysteresis loop type, are reset. Other special circuits are provided for preventing adverse interaction between the two high power pulse-forming networks and the circuitry associated with each of them.

REFERENCES:
patent: 3424925 (1969-01-01), Gagliardi et al.
patent: 3435249 (1969-03-01), Farrell
patent: 3571611 (1971-03-01), Robinson et al.
patent: 3772601 (1973-11-01), Smith
patent: 3928809 (1975-12-01), Tschudi et al.

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