Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1989-02-27
1990-05-08
Jennings, Derek S.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
261 86, 261 91, 261 98, H02H 308
Patent
active
049243446
ABSTRACT:
In a solid state relay circuit including a power semiconductor for switching power to a load circuit and having circuitry for disabling the power semiconductor to protect against current overload or short circuits, such disabling means including a silicon controlled rectifier for short circuiting the input to the power semiconductor, apparatus for sensing the presence of transient voltages in the load circuit, and apparatus for disabling any short circuit caused by the silicon controlled rectifier due to such voltage transients.
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Jennings Derek S.
King Stephen L.
Teledyne Industries Inc.
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