Control circuit and fuel burner incorporating a control circuit

Details Control circuit and fuel burner incorporating a control circuit Control circuit and fuel burner incorporating a control circuit

F - Mech Eng,Light,Heat,Weapons

23

N

341/19

F23N 5/00 (2006.01) G06F 11/00 (2006.01)

Patent

CA 1161521

ABSTRACT A fail-safe supervisory circuit for a microprocessor-controlled fuel burner has a diode pump circuit (C4, C5, D7, D8) triggered by a resettable monostable (R7, T2, R8, C3) responsive to an encoded signal from the microprocessor, to act as a watch-dog timer. A triggered bistable (D1, T1, R2, IC8) provides a RESET signal on power-on or manually. A direct connection from this bistable to the monostable enables the timer circuit until the microprocessor program commences.

371581

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