Circuitry for indicating the presence of an overload or short ci

Details Circuitry for indicating the presence of an overload or short ci Circuitry for indicating the presence of an overload or short ci

1989-02-27

1990-06-05

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340638, 361 93, H01H 7104, H01H 7312

Patent

active

049317784

ABSTRACT:
In a solid state relay circuit using a power semiconductor as the output circuit switching device and having protection against current overload and short circuits, an indicator circuit for signaling that overload currents have occurred in the switching device comprising circuitry for sensing that current overload protection has occurred, and switching circuitry responsive to the sensing that current overload protection has occurred for operating a current overload indicator.

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