In-circuit testing for integrity of solid-state switches

Details In-circuit testing for integrity of solid-state switches In-circuit testing for integrity of solid-state switches

2011-07-05

2011-07-05

Velez, Roberto (Department: 2858)

Electricity: measuring and testing

Electromechanical switching device

C324S762090

Reexamination Certificate

active

07973533

ABSTRACT:
A switching and fault detection circuit comprises two controllable switches capable of coupling a power source to a load. A controller can control the switches and test them for faults, and a voltage sensor can read the output voltage going to the load. Dual-redundant switches and fault detection circuitry can provide correct operation if one should fail. Control and feedback logic can determine if each of the solid-state switches is operating correctly during the power-on and power-off cycles and can also check for a fail-open condition during normal operations. If it is determined that a solid switch has failed open or closed, a fault can be generated.

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