Flame rectification detectors

Details Flame rectification detectors Flame rectification detectors

1981-03-03

1984-01-24

O'Connor, Daniel J.

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of electrical condition or temperature of electrical...

431 78, F23N 500

Patent

active

044273630

ABSTRACT:
A fail safe controller for a fuel burner has a rectifying probe positioned in the region occupied by the flame when it is burning normally. An alternating current power supply coupled to the probe is periodically interrupted by an inhibit circuit when the flame is burning. The intermittent rectified output from the probe controls the fuel supply by way of a diode pump circuit which ensures fail safe operation as it gives a null output for a steady state input.

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