Proportional warmup timer for power line outages using stored ch

Details Proportional warmup timer for power line outages using stored ch Proportional warmup timer for power line outages using stored ch

1977-01-27

1978-07-25

Hohauser, Herman J.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

361 75, 328 72, 328129, H03K 1728

Patent

active

041031806

ABSTRACT:
An electronic circuit is disclosed that provides a delay of operation until a piece of equipment reaches operating temperature. The circuit automatically adjusts the delay time to provide only the time necessary for warmup should there be a short outage of line power causing only partial cooling of the equipment. By proportioning the warmup delay time to the time of power loss, the equipment outage can be minimized. The proportionality between the warmup delay time and the time of power loss can be either linear or non-linear depending on the specific application.

REFERENCES:
patent: 3794858 (1974-02-01), Squiers
patent: 3939361 (1976-02-01), Aidala et al.

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