Electronic timer device

Details Electronic timer device Electronic timer device

1979-09-25

1981-07-21

Miska, Vit W.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

368107, 368111, 368 10, G04B 4700, G04F 800, H01H 334

Patent

active

042800633

ABSTRACT:
A timer device includes a counter which counts output pulses from an oscillator, and, when counting a prescribed number of pulses, sends forth an output signal, a transistor rendered conductive in response to the output signal from the counter, and a relay energized when the transistor is rendered conductive. A light-emitting diode connected is in parallel with the current path of the transistor to serve as an indicator as well as a latch for the relay.

REFERENCES:
patent: 3809970 (1974-05-01), Cook
patent: 3869854 (1975-03-01), Church
patent: 3882670 (1973-08-01), Woolley

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