Fail safe digital fuel ignition system

Details Fail safe digital fuel ignition system Fail safe digital fuel ignition system

1981-07-27

1983-05-24

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

With test circuit checking or analyzing flame sensing...

431 25, 431 46, F23Q 2300

Patent

active

043848451

ABSTRACT:
A fuel burner control system that is fail safe and which controls three fuel burner functions is provided for. The system utilizes two different digital clock means that are separated in time from one another to ensure separate gating of the fuel burner output functions. The system further uses a negative power supply with respect to the circuit ground for control purposes while energizing the output switch means with a positive potential thereby eliminating inadvertent operation in the event of circuit component failures.

REFERENCES:
patent: 3711237 (1973-01-01), Jaulmes
patent: 4192641 (1980-03-01), Nakagawa et al.
patent: 4238184 (1980-12-01), Schilling

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