Oscillator circuit with suppression of voltage transients

Details Oscillator circuit with suppression of voltage transients Oscillator circuit with suppression of voltage transients

1993-03-19

1995-07-04

Dolinar, Andrew M.

Oscillators

Solid state active element oscillator

Transistors

331113R, 331143, H03K 3282

Patent

active

054304148

ABSTRACT:
An electric circuit including a local oscillator circuit and which is adapted to prevent voltage transients. The oscillator circuit comprises two voltage sources which are alternately connected to respective electrodes of a capacitor. The capacitor electrodes are also connected, via respective load circuits, to a common reference node of the voltage sources. Thus, the respective voltage sources alternately generate mutually opposed currents in the capacitor, which currents charge and discharge the capacitor 20 to threshold levels, after which a switching control circuit interchanges the coupling of the voltage sources. In order to prevent a transient in the voltage level at the first capacitor electrode upon switching, a voltage control circuit provides a voltage difference between the voltages supplied by the voltage sources, which voltage difference corresponds to the charge voltage built up across the capacitor.

REFERENCES:
patent: 4977381 (1990-12-01), Main
patent: 5021750 (1991-06-01), Schnable

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