Tailbiter and open magnetron protection circuit

Details Tailbiter and open magnetron protection circuit Tailbiter and open magnetron protection circuit

1982-03-15

1984-01-03

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

328 8, H02H 904

Patent

active

044245459

ABSTRACT:
A tailbiter and open magnetron protection circuit for a radar pulse modulator having an extra winding on the modulator output transformer which combines a circuit to shorten a short range radar pulse with a circuit for applying a substantially constant load to the modulator when the magnetron is open or inactive. The extra winding on the transformer is connected in series with a saturable reactor which prevents shorting the desired short pulse width and stores undesired pulse energy in a capacitor and an SCR tailbiter circuit to short the excess pulse energy to ground in the interpulse period upon actuation of the SCR. Also included in the tailbiter circuit is an alternate path through a voltage divider and zener diode to the SCR gate which, whenever the magnetron is open or does not fire, a voltage build-up exceeding the zener voltage triggers the SCR gate circuit to maintain a substantially constant load on the primary of the modulation transformer.

REFERENCES:
patent: 4171514 (1979-10-01), Faxon

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