TWT grid circuit utilizing feedback

Details TWT grid circuit utilizing feedback TWT grid circuit utilizing feedback

1975-10-14

1976-12-28

Heyman, John S.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

328209, 330 43, H03K 604

Patent

active

040004716

ABSTRACT:
A TWT energizing circuit for compensating for the voltage droop at a TWT hode comprising the use of a differential amplifier which takes a modulation pulse at one of its inputs and a feedback signal comprising a sample of the body current from the TWT helix at the other of its inputs and applies a signal representative of the difference therebetween to the TWT grid. The above-described feedback circuit forces the grid voltage to track the cathode voltage thus maintaining a constant grid-cathode voltage drop.

REFERENCES:
patent: 3090010 (1963-05-01), Zavales
patent: 3165696 (1965-01-01), Poole
patent: 3327245 (1967-06-01), Britton
patent: 3566180 (1971-02-01), Ewton
patent: 3737713 (1973-06-01), Kalish
patent: 3796965 (1974-03-01), Quesinberry et al.
patent: 3936732 (1976-02-01), Modiano

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