Power-up clear circuitry having two thresholds

Details Power-up clear circuitry having two thresholds Power-up clear circuitry having two thresholds

1984-02-17

1986-04-08

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307200B, 307246, 307360, 307605, H03K 1722

Patent

active

045815526

ABSTRACT:
Power-up clear circuitry includes a latch which powers-up in a preferred state. Threshold detect circuitry changes the state of the latch when the supply voltage reaches its operating value, and then switches itself off. Transient protection circuitry ensures that the latch properly powers-up in the preferred state after a supply transient which drops below the threshold voltage of the circuit devices.

REFERENCES:
patent: 4045688 (1977-08-01), Stewart
patent: 4103187 (1978-07-01), Imamura
patent: 4196362 (1980-04-01), Maehashi
patent: 4385245 (1983-05-01), Ulmer
patent: 4409501 (1983-10-01), Eickerman et al.
patent: 4419596 (1983-12-01), Kikuchi
patent: 4446381 (1984-05-01), Dalrymple

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