Power source device for circuit breaker

Details Power source device for circuit breaker Power source device for circuit breaker

1987-05-29

1988-06-21

Salce, Patrick R.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363126, 307 38, H02M 328

Patent

active

047528656

ABSTRACT:
A power source device for a circuit breaker responsive to a current output of a current detection circuit having a capacitor chargeable to provide a voltage output and a switching circuit for switching between charging and discharging states of the capacitor. A dummy burden is connected to the switching circuit and set at a substantially equal burden formed by a load and a constant voltage generating circuit to eliminate fluctuations in the charging and discharging states of the capacitor. As a result, accuracy in the detected current output is substantially improved without the use of a high-capacitance and high-withstand-voltage capacity.

REFERENCES:
patent: 4677537 (1987-06-01), Chonan

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