Reliable field-effect transistor timer circuit

Details Reliable field-effect transistor timer circuit Reliable field-effect transistor timer circuit

1983-07-20

1985-06-04

Miller, S. D.

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

307108, 3071414, 307246, 307571, 307252R, 307594, 307296A, H03K 17284, H03K 17687

Patent

active

045217050

ABSTRACT:
A positive voltage supply is connected to a circuit having a single capacitor and depletion-type field-effect transistor to create a reliable timer. The capacitor is initially charged upon the opening of a control switch without creating a timed output across the drain-source terminals of the field-effect transistor. The closing of the switch reverses the bias of the single capacitor to the gate-source connections of the field-effect transistor to thereby create a fixed and reliable timed interval.

REFERENCES:
patent: 3751688 (1973-08-01), Hooghordel
patent: 3936706 (1976-02-01), Hamstra
patent: 4001610 (1977-01-01), Griffin
patent: 4158149 (1979-06-01), Otofuji
patent: 4267467 (1981-05-01), Tsukada
patent: 4302691 (1981-11-01), Kelley

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