Electronic remote control D.C. power controller and circuit brea

Details Electronic remote control D.C. power controller and circuit brea Electronic remote control D.C. power controller and circuit brea

1980-02-22

1982-08-24

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361111, 361 87, H02H 3093, H02H 3087

Patent

active

043464246

ABSTRACT:
An electronic remote control D.C. power control and overload circuit breaker for the cockpit controlled D.C. power system of an aircraft or the like. Electronic sensing of overcurrent conditions provides better accuracy, stability and reliability and easier adjustment or adaptation to specific applications. These are attained by using a combination of a shunt resistor in the D.C. line feeding a transient suppressing input bridge and an instrumentation amplifier with common mode rejection followed by a trip time delay network, a threshold comparator and logic and relay control circuitry, as well as supply voltage regulation plus secondary regulation of the comparator reference voltage. A remote cockpit unit affords control and indication. Modifications afford bidirectional sensing of the D.C. bus overload as well as different trip time delays for the two polarities of overload currents.

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