Resistance reference circuit

Details Resistance reference circuit Resistance reference circuit

1995-12-21

1998-02-10

Berhane, Adolf

Electricity: power supply or regulation systems

Output level responsive

Using an impedance as the final control device

323353, G05F 1648

Patent

active

057173230

ABSTRACT:
The present invention describes a resistance reference circuit that includes a reference resistor that is substantially independent of temperature variations to which the resistance reference circuit is subjected. Also provided is a resistor network that may be dependant upon the temperature variations, and a current source circuit that provides first and second currents to the reference resistor and the resistor network. A circuit that is responsive to voltages developed across the reference resistor and the resistor network modifies the resistance value of the resistor network such that its resistance value is maintained the same as that of the reference resistor.

REFERENCES:
patent: 3624481 (1971-11-01), Macharg
patent: 4173734 (1979-11-01), Hirasawa et al.
patent: 4300395 (1981-11-01), Shirouzu et al.
patent: 4510813 (1985-04-01), Kanazawa
patent: 4668932 (1987-05-01), Drori et al.
patent: 4788521 (1988-11-01), Johnson
patent: 5243297 (1993-09-01), Perkins et al.
Patent Abstracts of Japan, vol. 006, No. 092 (P-119) May 29, 1982 & JP-A-57 028227 (Seiko Epson Corp.) Feb. 15, 1982.

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