Switched-mode power supply circuit having a very low power stand

Details Switched-mode power supply circuit having a very low power stand Switched-mode power supply circuit having a very low power stand

1997-08-04

1998-12-22

Hecker, Stuart N.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 19, H02M 3335

Patent

active

058525505

ABSTRACT:
A switched-mode power supply circuit includes a first controller for controlling power to a main power output through a first transformer, and a second controller for controlling power to a control output through a second transformer. In order to effect a very low power stand-by mode, the second controller turns off the first controller, the second controller only operating. When a load is selectively coupled across the control output, the second controller detects this load and turns on the first controller thereby effecting the operating mode.

REFERENCES:
patent: 4766528 (1988-08-01), Marinus
patent: 4788591 (1988-11-01), Decraemer
patent: 5126930 (1992-06-01), Ahn
patent: 5453921 (1995-09-01), Shutts
patent: 5703764 (1997-12-01), Hermann et al.

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