Universal digital time delay relay having a multistate indicator

Details Universal digital time delay relay having a multistate indicator Universal digital time delay relay having a multistate indicator

1974-08-29

1976-10-19

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307215, 307218, 307252B, 307252J, 307247R, H03K 513, H03K 1760

Patent

active

039873161

ABSTRACT:
Solid-state digital time delay relay having a pair of complementary contacts one of which breaks or opens before the other of which makes or closes. The switching or transfer function utilizes logic elements for each set of contacts. A multistate indicator is also provided to give one indication of contact status.

REFERENCES:
patent: 2776420 (1957-01-01), Woll
patent: 3263119 (1966-07-01), Scholl
patent: 3286030 (1966-11-01), Puckett et al.
patent: 3588540 (1971-06-01), Bohn
patent: 3656005 (1972-04-01), Lee
patent: 3693060 (1972-09-01), Joyce
patent: 3740587 (1973-06-01), Lee

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