High voltage protection circuit for a television receiver

Details High voltage protection circuit for a television receiver High voltage protection circuit for a television receiver

H - Electricity

04

N

350/109

H04N 5/44 (2006.01) H04N 3/20 (2006.01)

Patent

CA 1177158

-20- RCA 76,631 ABSTRACT OF THE DISCLOSURE A high voltage generator of a television receiver is responsive to an alternating voltage, such as a retrace pulse voltage, and develops an ultor voltage at an ultor terminal. A high voltage protection circuit includes a comparator that, when activated, disables normal television display. A sense voltage representative of the ultor voltage is coupled to an input terminal of the comparator so as to activate the comparator when the ultor voltage exceeds a predetermined threshold level. A sense voltage representative of the ultor beam current is also coupled to an input terminal of the comparator so as to vary the threshold ultor voltage level at which the comparator is activated in accordance with beam current variations. When the ultor beam current exceeds a level indicative of high voltage generator overload, a switch that is coupled to an input terminal of the comparator changes states to activate the comparator and shut down the high voltage generator.

394267

Affiliated with

Also associated with

Rating

High voltage protection circuit for a television receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High voltage protection circuit for a television receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High voltage protection circuit for a television receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1299978