Back to results
US 4,453,140 AGranted
Oscillator using charge-discharge characteristics of a transistor junction
OwnerWayne L. Gindrupinventor
Life of this patent
Estimating the term…
Abstract
A transistor oscillator circuit having a cascaded pair of transistors connected with the collector terminal of one transistor in an inverted electrical polarity so that the oscillatory period is determined by the time required for discharging a charge stored across one junction of one transistor.
Claims4
A transistor oscillator circuit comprising
- (a) a voltage source having first and grounded terminals;
- (b) a load having one terminal grounded;
- (c) a first transistor of a first semiconductor type having a collector, emitter and base, said collector electrode being connected to the ungrounded load terminal, said emitter electrode being connected to the first terminal of said voltage source;
- (d) a second transistor of the opposite semiconductor type having a collector, emitter and base, said collector electrode being grounded, and said emitter electrode being connected to the base electrode of said first transistor;
- (e) a resistor having one terminal connected to the first terminal of said voltage source and a second terminal connected to the base electrode of said second transistor;
- and
- (f) a capacitor having one terminal connected to the collector electrode of said first transistor and a second terminal connected to the base electrode of said second transistor, whereby the duty cycle of the load depends at least in part upon the charge-discharge characteristics of a transistor junction.
4 more elements
Dependencies are inferred from the claim text.