Self-powered flame monitoring apparatus

Details Self-powered flame monitoring apparatus Self-powered flame monitoring apparatus

1995-06-13

1996-05-21

Dority, Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

331 66, F23N 510

Patent

active

055183964

ABSTRACT:
An oscillator (3) drives a controlled switch (6) of a converter (2) using a periodic pulse signal that alternately determines long closing times (T.sub.on) and short opening times (T.sub.off). During the closing times, the converter stores energy generated by a thermocouple (23) in the presence of a flame. During opening times, the conductor supplies energy at a higher value to remaining circuitry of the monitoring apparatus. The converter comprises an LED (9) to indicate the presence of the flame to be monitored.

REFERENCES:
patent: 4565519 (1986-01-01), Carignan
patent: 4984981 (1991-01-01), Pottebaum

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