Differential circuit

Details Differential circuit Differential circuit

1982-12-17

1986-03-18

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307549, 307494, H03K 524

Patent

active

045771219

ABSTRACT:
A differential circuit, such as a comparator circuit or an operational amplifier circuit, including an output-error preventing circuit having an npn transistor and a constant voltage source. The output of the differential circuit is kept at the correct value corresponding to the difference of two inputs of the differential circuit, even if one of the two inputs becomes negative.

REFERENCES:
patent: 3872323 (1975-03-01), Frederiksen et al.
patent: 4177394 (1979-12-01), Takasugi
patent: 4379240 (1983-04-01), Mammano
Patent Abstract of Japan, vol. 5, No. 149, Sep. 19, 1981.

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