Load activated normally quiescent waveform generator
AssigneeVRL Growth Associates, Inc.
InventorsKevin G. Rhoads, George M. Plotkin
Life of this patent
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Abstract
There is disclosed a novel compact power oscillator which is normally quiescent until applied to a load, to produce, under load, a unique waveform which has a unique application to self-protective devices and medical uses. The oscillator includes a high gain inverting amplifier, preferably a Darlington pair constituted by a germanium output transistor driven by a small signal transistor, a transformer, a D.C. source such as a battery, and a pair of output electrodes.
Claims5
A voltage step-up circuit for delivering a stepped up voltage to a pair of output electrodes comprising:
- a normally quiescent oscillator circuit constituted by an inverting high gain transistor amplifier, said transistor amplifier having an emitter-collector output circuit and a base-emitter input circuit;
- a source of unidirectional voltage;
- an inverting voltage step-up transformer having a low voltage primary winding and a high voltage secondary winding;
- a first series circuit constituted by said source of unidirectional voltage, said emitter-collector circuit and said primary winding;
- and a second series circuit feedback arrangement constituted by said secondary winding, said pair of output electrodes, said base-emitter input circuit and said source of unidirectional voltage;
- said quiescent circuit being rendered oscillatory solely upon the presence of a high resistance load across said output electrodes.
A voltage step-up circuit comprising:
- a normally quiescent oscillator circuit which consists of a pair of output electrodes, an inverting voltage step-up transformer having a primary winding and a stepped up voltage feedback winding, a low voltage battery, and an inverting transistor amplifier having an emitter-collector circuit and an emitter-base circuit;
- conductor means connecting said primary winding of said transformer, said low voltage battery and the emitter-collector circuit of said inverting transistor amplifier in a series circuit;
- and further conductor means connecting said pair of output electrodes, said feedback winding, said battery and the emitter-base circuit of said transistor amplifier in a further series circuit;
- said further series circuit being completed solely on the presence of a high impedance load between said pair of output electrodes, whereupon the oscillator circuit becomes oscillatory and a stepped up voltage is applied across said output electrodes.
Dependencies are inferred from the claim text.