Electronic circuit having comparator

Details Electronic circuit having comparator Electronic circuit having comparator

1995-02-22

1996-08-20

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

327 53, G01R 1900

Patent

active

055481620

ABSTRACT:
An electronic circuit comprising a comparator which is operated by a first power source voltage and having first and second input terminals, where the first input terminal is supplied with a reference voltage which is dependent on the first power source voltage, a detecting circuit for detecting a deviation of a second power source voltage and for outputting a control signal dependent on the deviation, where the first and second power source voltages undergo mutually independent deviations, and a voltage converting circuit supplied with an input signal for converting a voltage of the input signal depending on the control signal received from the detecting circuit. The voltage converting circuit supplies the input signal to the second input terminal of the comparator which outputs an error signal indicative of an error between the input signal voltage and the reference voltage.

REFERENCES:
patent: 4008418 (1977-02-01), Murphy
patent: 4399399 (1983-08-01), Joseph
patent: 4680530 (1987-07-01), Mashino
patent: 5014675 (1991-05-01), Koiwa
patent: 5047707 (1991-09-01), Dixon et al.
patent: 5109827 (1992-05-01), Nobe et al.
IBM Technical Disclosure Bulletin, vol. 20, No. 8 (Jan. 1978), pp. 3056-3057, Constant Voltage Reference Source, Carroll et al.
IBM Technical Disclosure Bulletin, vol. 21, No. 7 (Dec. 1978), pp. 2719-2720, Gated Current Source, Spencer, Jr.

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