Electronic trip device with short delay function

Details Electronic trip device with short delay function Electronic trip device with short delay function

1991-07-23

1993-05-04

Pellinen, A. D.

Communications, electrical: acoustic wave systems and devices

Echo systems

Presence or movement only detection

361 96, 361 97, H02H 700

Patent

active

052087204

ABSTRACT:
The short time delay circuit comprises a counter which is zero reset when the signal representative of the current is greater than or equal to a threshold, and controls count-down of an up-down counter, when the content of the counter reaches a preset value. A clock circuit controls the count-up and count-down frequency of the counter and up-down counter.

REFERENCES:
patent: 3792313 (1974-02-01), Conrad
patent: 4589052 (1986-05-01), Dougherty
patent: 4782422 (1988-02-01), Jones et al.

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