Solid state relay and circuit breaker

Details Solid state relay and circuit breaker Solid state relay and circuit breaker

1998-01-15

1999-07-20

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361100, 361115, H02H 300

Patent

active

059263547

ABSTRACT:
A current interruption circuit for interrupting current flow from a source of DC power to a load includes: an electronically controllable primary switch device adapted to be series coupled between the DC power source and the load, the primary switch device having a voltage thereacross which is proportional to a current flowing therethrough when biased in an on state. The circuit also includes a voltage sensing circuit adapted to sense the voltage across the primary switch device and produce a control signal in response thereto; and a gate drive circuit adapted to receive the control signal and bias the primary switch in an off state when the control signal indicates that the voltage across the primary switch has exceeded a predetermined value.

REFERENCES:
patent: 4721869 (1988-01-01), Okado

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