Fault detection circuit

Details Fault detection circuit Fault detection circuit

2007-01-26

2008-11-11

Tang, Minh N (Department: 2829)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S118000, C324S521000

Reexamination Certificate

active

07449912

ABSTRACT:
Power supplies are disclosed herein. One embodiment of a power supply comprises a first input and a second input, wherein the first input and the second input are connectable to a pulse width modulation controller and wherein a pulse width modulation signal is outputable from the pulse width modulation controller. A power stage connected to the first input and the second input. A first comparator having a first comparator first input is connected to the first input and a first comparator second input connected to the output of the power stage. A change of voltage at the output of the first comparator constitutes a difference in phase between the first input and the output of the power stage.

REFERENCES:
patent: 5689394 (1997-11-01), Esser et al.
patent: 2008/0012542 (2008-01-01), Liu et al.

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