Latent fault detection in redundant power supply systems

Details Latent fault detection in redundant power supply systems Latent fault detection in redundant power supply systems

2005-09-20

2005-09-20

Hoff, Marc S. (Department: 2857)

Data processing: measuring, calibrating, or testing

Testing system

Of circuit

C702S185000

Reexamination Certificate

active

06947864

ABSTRACT:
Latent faults are detected by a testing system in a redundant DC power supply system having at least two power supplies connected to a common load via respective isolation devices. The testing system selects as a subject for a test procedure one isolation device and its corresponding power supply. The power supplies are controlled during the test procedure to marginally vary the output voltage of at least one power supply such that a differential voltage is applied between the output of the selected power supply and the outputs of the remaining power supplies for selectively changing the conductive state of at least one isolation device to a non conductive state by reducing its forward voltage to less than its respective forward bias voltage value.

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