Oscillators – Solid state active element oscillator – Transistors
Patent
1985-05-31
1986-12-16
Grimm, Siegfried H.
Oscillators
Solid state active element oscillator
Transistors
331177R, H03B 512
Patent
active
046300066
ABSTRACT:
A simplified current-tuned bipolar junction transistor oscillator is provided that is especially adapted for low power applications. The oscillator hereof utilizes the diffusion capacitance of the transistor's forward-biased base-emitter junction together with an inductance connected directly across the transistor's base-collector junction as reactive elements in the oscillator's frequency determining network. The transistor's base-collector junction is operated at zero volts bias thereby insuring that its depletion capacitance is fixed. The input current to the emitter is varied to change the base-emitter diffusion capacitance thereby adjusting the oscillator's frequency of oscillation.
REFERENCES:
patent: 3076945 (1963-02-01), Coombs
patent: 3089040 (1963-05-01), Hovey
patent: 3403354 (1968-09-01), Harwood
patent: 3550037 (1970-12-01), Wiencek
patent: 3611195 (1971-10-01), Parham
patent: 3728645 (1973-04-01), Rosen et al.
patent: 3879677 (1975-04-01), Arnold
patent: 4010428 (1977-03-01), Sunkler
patent: 4034312 (1977-07-01), Armand
patent: 4047126 (1977-09-01), Anderson
patent: 4075580 (1978-02-01), Sunkler
patent: 4096453 (1978-06-01), Rogers
patent: 4150344 (1979-04-01), Fenk
"The Voltage-Variable-Capacitance-Diode", from Workshop in Solid State, by Harold E. Ennes, pp. 41-44.
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