Plural selectable RF oscillators for supplying capacitive loads

Details Plural selectable RF oscillators for supplying capacitive loads Plural selectable RF oscillators for supplying capacitive loads

1991-11-15

1992-08-25

Grimm, Siegfried H.

Oscillators

Plural oscillators

331 49, 331149, 331173, 346154, H03B 508

Patent

active

051422484

ABSTRACT:
An oscillation circuit having multiple separately addressable oscillator stages for applying RF voltage across selected capacitive loads where each stage includes a power driver, a transformer and a quench/clamp circuit. The oscillation circuit includes one enablement circuit responsive to an externally applied enablement signal and address signal and a common feedback circuit connected between one end of all of the transformers and the enablement circuit. An externally applied address signal and an enable signal selects a particular oscillator stage and initiates action of a power/driver circuit to provide an initial pulse of AC current through the associated transformer for a preset period and the feedback circuit detects negative zero crossovers of the waveform of current through that transformer primary to maintain actuation of the driver circuit for as long as the external enable signal is present.

REFERENCES:
patent: 4841313 (1989-06-01), Weiner

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