Electricity: power supply or regulation systems – Input level responsive
Reexamination Certificate
2006-11-28
2006-11-28
Han, Jessica (Department: 2838)
Electricity: power supply or regulation systems
Input level responsive
C323S222000, C323S284000
Reexamination Certificate
active
07141958
ABSTRACT:
A power supply apparatus is provided, which reduces undershoot of a DC source voltage when a power supply interrupt occurs. The power supply apparatus supplies a DC voltage to an output of the power supply apparatus, an output capacitor is provided between the power supply output and ground, and a resistor controls the discharge time constant when the supply of source voltage is temporarily halted. The resistor is coupled in series with a switch, forming a discharge path to ground for the output capacitor. A discharge path switch disables the discharge path when source voltage is supplied. The discharge path is enabled in the event of a power supply interrupt and disabled during normal power supply operation.
REFERENCES:
patent: 6469481 (2002-10-01), Tateishi
patent: 6879136 (2005-04-01), Erisman et al.
patent: 2004/0100240 (2004-05-01), Natsume et al.
patent: 2004/0100241 (2004-05-01), Natsume et al.
patent: 10-295074 (1998-11-01), None
Han Jessica
Lestrange Michael J.
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