Digital cathode current control loop

Details Digital cathode current control loop Digital cathode current control loop

H - Electricity

01

J

330/106

H01J 1/13 (2006.01) G05F 1/46 (2006.01) H05B 41/36 (2006.01)

Patent

CA 1240003

ABSTRACT OF THE DISCLOSURE A digital cathode current control circuit for controlling the cathode current of a traveling wave tube (TWT) amplifier is disclosed The cathode current control circuit includes circuitry for providing a comparison signal indicative of the occurrence and amplitude of TWT cathode current pulses; clocking circuitry responsive to the comparison signal for providing a clock signal delayed relative to the occurrence of a cathode current pulse; comparison circuitry for comparing the comparison signal with predetermined reference signals indicative of a predetermined cathode current level, and for providing adjustment signals indicative of the adjustment of the TWT cathode current necessary to tend to achieve the predetermined cathode current; and counter circuitry clocked by the delayed clock signal for providing an output count in response to the adjustment signals.

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