Power supply associated with AC line relay switch

Details Power supply associated with AC line relay switch Power supply associated with AC line relay switch

1986-10-29

1987-12-15

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Phase controlled switching using electronic tube or a three...

363126, G05F 100

Patent

active

047135980

ABSTRACT:
A relay switch in an ac main line has a dc-powered applying for applying amplified control sensor signals to the control circuit of the relay switch. To provide dc power for the amplifier when the relay switch main controlled current conduction path is conductive, a current transformer primary winding is arranged in series with that path, and the voltage appearing across the secondary winding is rectified. To provide dc power for the amplifier when the relay switch main controlled current conduction path is non-conductive, an open-circuit voltage related to that appearing across the open-circuit non-conductive path is rectified. To permit the use of one rectifier for developing dc power for the amplifier it is advantageous to apply the open-circuit voltage to the secondary winding of the current transformer through a dc-blocking capacitor with sufficient ac impedance to restrict ac flow across the open-circuit relay switch path.

REFERENCES:
patent: 3177421 (1965-04-01), Montgomery
patent: 3805184 (1974-04-01), Visioli, Jr. et al.
patent: 4586122 (1986-04-01), Self

Affiliated with

Also associated with

Rating

Power supply associated with AC line relay switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power supply associated with AC line relay switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply associated with AC line relay switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1222418