Power stealing solid state switch for supplying operating power

Details Power stealing solid state switch for supplying operating power Power stealing solid state switch for supplying operating power

1997-01-27

1999-05-11

Berhane, Adolf Deneke

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

327537, 307 39, G05F1/44

Patent

active

059031395

ABSTRACT:
A power stealing circuit provides operating power for a environmental control such as a thermostatic control while controlling the current in a power supply line to a load in response to the cycling output of the environmental control. A pair of power FETs are connected to the series power terminals, and the gates are controlled by logic and phase timers. FETs are turned off at the end of a phase, while a small amount of power sufficient to operate the control and circuitry is diverted to a power storage circuit, then the FETs are turned back without substantial interruption to the load. A preferred embodiment uses a bi-directional charge pump to transfer power between low- and high-voltage power storage circuits. The circuit can operate with symmetrical or nonsymetrical AC or DC loads.

REFERENCES:
patent: 4753388 (1988-06-01), Rummage
patent: 4776514 (1988-10-01), Johnstone et al.
patent: 4785843 (1988-11-01), Nicholson
patent: 5218235 (1993-06-01), Patterson et al.
patent: 5304781 (1994-04-01), Stalsberg
patent: 5572104 (1996-11-01), Nold et al.
patent: 5635896 (1997-06-01), Tinsley et al.

Affiliated with

Also associated with

Rating

Power stealing solid state switch for supplying operating power 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 stealing solid state switch for supplying operating power , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power stealing solid state switch for supplying operating power will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-247713