Timing circuit

Details Timing circuit Timing circuit

1975-03-18

1977-03-15

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307235W, 320 1, 328129, H03K 513

Patent

active

040126455

ABSTRACT:
A fail-safe timing circuit has a timing capacitor which is charged progressively in steps through a switching arrangement to cause a biasing potential of a threshold device to change progressively. This biasing potential is normally outside the switching range required to cause changeover of the threshold device, and is only brought within this range after a timed interval determined by the capacitor. If the capacitor fails in any sense, the biasing potential fails to reach the switching range and the threshold device is not triggered.

REFERENCES:
patent: 3121803 (1964-02-01), Watters
patent: 3469116 (1969-09-01), Nomura
patent: 3725681 (1973-04-01), Frederiksen
Bray, K. J., Electronics, Mar. 18, 1968, p. 94.

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