Condition detector circuit

Electricity: power supply or regulation systems – Remote sensing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

323 19, 323 22SC, F23N 502, G05F 152

Patent

active

039873587

ABSTRACT:
A flame monitoring circuit in which a storage capacitor is connected between the "hot" line of an a.c. power supply and a flame electrode disposed so as to be bathed in the flame being monitored. Because of its rectification properties, the flame causes a flow of direct current that charges the storage capacitor providing a flame indicating signal voltage. A control circuit powered by the a.c. source is coupled to the storage capacitor so as to respond to either the presence or absence thereon of a d.c. signal voltage. Electrically coupling the storage capacitor and the control circuit is a sampling circuit for periodically sampling the energy level stored in the storage capaitor. The sampling circuit includes a discharge capacitor coupled to the storage capacitor so as to receive charging current therefrom and a complementary silicon-controlled rectifier is periodically activated to dump the energy from the discharge capacitor into the gate circuit of a silicon-controlled rectifier in the control circuit. The complementary silicon-controlled rectifier is fired at zero-crossings of the a.c. power source immediately preceding those half cycles during which flame rectified current is produced.

REFERENCES:
patent: 3619097 (1971-11-01), Clay et al.
patent: 3789383 (1974-01-01), Vasel

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Condition detector circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Condition detector circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Condition detector circuit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-105072

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.