Multivibrator circuit

Details Multivibrator circuit Multivibrator circuit

1978-11-30

1981-01-20

Zazworsky, John

Oscillators

Solid state active element oscillator

Transistors

307273, 307288, H03K 3282, H03K 3284

Patent

active

042465516

ABSTRACT:
A circuit for quickly discharging a timing capacitor which is connected between the collector of a first transistor and the base of a second transistor, and which is charged via a current source connected to the collector of the first transistor. The circuit includes a third transistor whose conduction path is connected across the capacitor and whose control electrode is connected to the emitter of the first transistor. A turn-on current supplied to the base of the first transistor causes the timing capacitor to be discharged by a current whose amplitude is approximately equal to the turn-on current multiplied by the product of the forward current gains of the first and third transistors.

REFERENCES:
patent: 2827574 (1958-03-01), Schneider
patent: 2976432 (1961-03-01), Geckle, Jr.
patent: 3065362 (1962-11-01), Benson
patent: 3163778 (1964-12-01), Seurot
patent: 3559096 (1971-01-01), Lokerson
patent: 3849673 (1974-11-01), Koo
patent: 3942134 (1976-03-01), Schade, Jr.
patent: 4009404 (1977-02-01), Kuo

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