Control circuitry for multistage fans

Electricity: electrical systems and devices – Safety and protection of systems and devices – Voltage regulator protective circuits

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Details

361 31, 361 58, 361 98, 330207P, G05F 158

Patent

active

043297250

ABSTRACT:
A solid-state, multistage temperature controller for automatically controlling the operation of fans to maintain the temperature of an associated engine within preselected limits.

REFERENCES:
patent: 3753079 (1973-08-01), Trilling
patent: 3796943 (1974-03-01), Nelson
patent: 3967207 (1976-06-01), Wheatley, Jr.
patent: 3979643 (1976-09-01), Pelc
patent: 4202023 (1980-05-01), Sears
patent: 4223363 (1980-09-01), Santis et al.

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