Current detecting device with temperature compensating device

Details Current detecting device with temperature compensating device Current detecting device with temperature compensating device

1993-12-16

1996-03-26

Young, Brian K.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 93, 361100, H02H 308

Patent

active

055015174

ABSTRACT:
A current detecting device of the invention has a temperature compensating function used for a current limiting device. A sensing resistance and a reference voltage source are connected to a comparison device. A compensating device, such as semiconductor element, is inserted in series into the reference voltage source in a voltage source circuit for supplying a reference voltage to compensate a temperature dependency of the sensing resistance. Temperature dependency of the reference voltage is a negative temperature dependency in the forward voltage drop. The manufacturing process of the current detecting device becomes simple.

REFERENCES:
patent: 4297741 (1981-10-01), Howell

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