Electronic timer

Details Electronic timer Electronic timer

1976-08-23

1978-12-12

Smith, Jr., David

Electricity: motive power systems

Automatic and/or with time-delay means

Time or with time-delay means

307141, H02H 708

Patent

active

041298128

ABSTRACT:
An electronic timer circuit comprising a condenser for storing charged electrons, a control switch opened and closed in response to the status of a sensed condition, a controlled switch for controlling a load, a high input impedance circuit coupled to the controlled switch for discharging the condenser and for causing the controlled switch to close when the control switch is closed and the charge stored in the condenser is greater than some predetermined amount and a switching component responsive to the control switch for restricting the discharge rate of the condenser to a low level.

REFERENCES:
patent: 3626239 (1971-12-01), Brock
patent: 3723807 (1973-03-01), Tozzi
patent: 3993914 (1976-11-01), Conrad et al.

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