Input current or voltage limited power supply

Details Input current or voltage limited power supply Input current or voltage limited power supply

2006-11-15

2009-02-03

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C307S035000, C323S299000

Reexamination Certificate

active

07486056

ABSTRACT:
An apparatus comprises a linear power supply and an auxiliary power supply powered from the linear power supply. The auxiliary power supply comprises a switching regulator connected to receive, at an input thereof, the output voltage of the linear power supply and to generate therefrom an output voltage of the auxiliary power supply. The auxiliary power supply further comprises a detection circuit, connected to the linear power supply and to the switching regulator, that detects one of (i) a level of current drawn from the linear power supply and (ii) a level of voltage at an output of the linear power supply and that causes the switching regulator to reduce its load on the linear power supply when the detected level reaches a predetermined threshold.

REFERENCES:
patent: 5404092 (1995-04-01), Gegner
patent: 5457621 (1995-10-01), Munday et al.
patent: 6118677 (2000-09-01), Ameri
patent: 7173400 (2007-02-01), Morioka
patent: 7298120 (2007-11-01), Lam
patent: 7317301 (2008-01-01), Angquist

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