Switching mode power supply apparatus and power supply...

Details Switching mode power supply apparatus and power supply... Switching mode power supply apparatus and power supply...

2011-07-26

2011-07-26

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Input level responsive

C323S276000, C361S018000

Reexamination Certificate

active

07986136

ABSTRACT:
A switching mode power supply apparatus includes a conversion unit to convert input power into output power having a predetermined voltage by performing a switching operation; a light emitting unit to emit light if the voltage of the output power exceeds a predetermined threshold voltage; a light receiving unit to receive the light emitted from the light emitting unit and output a signal indicative of the voltage of the output power; a switching controller to control the switching operation of the conversion unit according to the voltage of the output power indicated by the signal output from the light receiving unit; and a disconnection unit to disconnect power applied to the light receiving unit if a voltage of the power applied to the light receiving unit exceeds a predetermined trigger voltage.

REFERENCES:
patent: 4882782 (1989-11-01), Kimizuka et al.
patent: 5625285 (1997-04-01), Virgilio
patent: 6574126 (2003-06-01), Gionet, Jr.
patent: 6700766 (2004-03-01), Sato
patent: 6992467 (2006-01-01), Fey

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