Method and system for allowing a power supply circuit to use a s

Details Method and system for allowing a power supply circuit to use a s Method and system for allowing a power supply circuit to use a s

1998-07-31

1999-11-23

Gaffin, Jeffrey

Electrical transmission or interconnection systems

Switching systems

Condition responsive

323908, 363 49, H01H 4700

Patent

active

059905816

ABSTRACT:
A method and system for allowing a power supply circuit to limit inrush current and to use a small current specification switch. The power supply circuit comprises a transformer that receives a power signal from a primary circuit and supplies power of a selected voltage to a secondary circuit, to which a load is coupled. The primary circuit comprises a rectifier for providing a rectified power signal to the transformer, a power supply controller for controlling the transformer, and a small current specification switch coupled between a kick resistor and the power supply controller, where the kick resistor functions to activate the power supply controller when the circuit is first turned on. By coupling the switch between the kick resistor and the power supply controller, the present invention not only utilizes the high impedance kick resistor to limit inrush current through the switch so that the switch can have a small current specification, but also ensures that current to the power supply controller is cut off when the switch is open. Thus, when the load is powered off with the switch open, no wattage is dissipated by the power supply controller either and total power consumption of the circuit is thereby minimized. The primary circuit optionally comprises a voltage limiter coupled to protect the power supply controller. Additionally, the primary circuit optionally comprises an impedance element coupled to further limit inrush current.

REFERENCES:
patent: 5124630 (1992-06-01), Tsutsumi
patent: 5187653 (1993-02-01), Lorenz
patent: 5287262 (1994-02-01), Shilo
patent: 5394063 (1995-02-01), Nakazawa
patent: 5420780 (1995-05-01), Bernstein et al.
patent: 5574632 (1996-11-01), Pansier
patent: 5619127 (1997-04-01), Warizaya

Affiliated with

Also associated with

Rating

Method and system for allowing a power supply circuit to use a s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for allowing a power supply circuit to use a s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for allowing a power supply circuit to use a s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1225074