Thermostatically operated fuel valve control circuit

Details Thermostatically operated fuel valve control circuit Thermostatically operated fuel valve control circuit

1988-02-22

1988-12-06

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of first burner controls second burner, e.g., pilot...

F23Q 908

Patent

active

047893290

ABSTRACT:
A control circuit for a fuel valve in a gas fired furnace controlled by an electronic thermostat is disclosed. The thermostat requires a load current to properly operate, and a pickup and hold circuit along with a time delay circuit are integrated to control a load current circuit to provide the correct load current for the thermostat.

REFERENCES:
patent: 3975136 (1976-08-01), Baysinger et al.
patent: 4034270 (1977-07-01), Matthews
patent: 4188181 (1980-02-01), Rippelmeyer et al.
patent: 4249696 (1981-02-01), Donnelly et al.
patent: 4333605 (1982-06-01), Peters
patent: 4340173 (1982-07-01), Kompelien
patent: 4360338 (1982-11-01), Katchka
patent: 4435150 (1984-03-01), Rippelmeyer
patent: 4565519 (1986-01-01), Carignan
patent: 4632303 (1986-12-01), Rodittis

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