Power supply circuit having resistance element changing its...

Details Power supply circuit having resistance element changing its... Power supply circuit having resistance element changing its...

2008-12-15

2011-10-11

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

C363S056070, C323S277000

Reexamination Certificate

active

08036006

ABSTRACT:
A power supply circuit includes a control circuit which outputs a control signal when an in-rush current flows and a power-supply-resistance control circuit which supplies a current to a capacitive load. The power-supply-resistance control circuit, provided in the current path between a power supply and the capacitive load, increases the resistance of the current path in response to the control signal and reduces the resistance of the current path in response to a stop page of the control signal, whereby the control signal is output or stopped so that the in-rush current is suppressed to a value smaller than or equal to a given value.

REFERENCES:
patent: 5574632 (1996-11-01), Pansier
patent: 6573693 (2003-06-01), Okamoto
patent: 6646842 (2003-11-01), Pan et al.
patent: 6735064 (2004-05-01), Miyazaki
patent: 2002/0033727 (2002-03-01), Okamoto
patent: 2003/0035311 (2003-02-01), Phadke
patent: 2007/0014134 (2007-01-01), Shih
patent: 2007/0252565 (2007-11-01), Wang et al.
patent: 2008/0068871 (2008-03-01), Kokubun et al.
patent: 2002-91584 (2002-03-01), None
patent: 2002-116828 (2002-04-01), None

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