Voltage offset circuit for auto-zero low voltage amplifier

Details Voltage offset circuit for auto-zero low voltage amplifier Voltage offset circuit for auto-zero low voltage amplifier

1979-09-10

1981-09-15

Dixon, Harold A.

Amplifiers

With periodic switching input-output

H03F 102

Patent

active

042900239

ABSTRACT:
A voltage offset circuit for use with an amplifier connected to receive low voltage signal inputs and operable for eliminating internal voltage offset errors of the amplifier as well as systemic voltage offsets. A variable voltage generating means is utilized to impress a voltage on an output capacitor of the amplifier which is operable in an auto-zero and measuring mode of operation. Preferably, the offset circuit and amplifier are utilized with digital meters employing an analog-to-digital converter having an auto-zero phase and measuring phase of operation.

REFERENCES:
patent: 2744969 (1956-05-01), Peterson
patent: 3237111 (1966-02-01), Skinner
patent: 3237116 (1966-02-01), Skinner
patent: 3988689 (1976-10-01), Ochi et al.
patent: 4010424 (1977-03-01), Faulkner

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