Precision isolation amplifier

Details Precision isolation amplifier Precision isolation amplifier

1981-08-24

1983-10-25

Mullins, James B.

Amplifiers

Sum and difference amplifiers

330261, H03F 345

Patent

active

044121849

ABSTRACT:
The subject precision isolation amplifier adds error correction circuitry to a basic isolation amplifier circuit to thereby produce an error-free output signal comprising only the metallic component of the monitored voltages. The error correction circuit consists of a pair of up/down emitter followers and a current mirror circuit which function to eliminate both the longitudinal components of the monitored voltage signals and the voltage offset generated by the basic isolation amplifier. A second error-free ouput signal comprising only the longitudinal component of the monitored voltage signals is also provided.

REFERENCES:
patent: 4146844 (1979-03-01), Quinn
patent: 4206416 (1980-06-01), Kellogg

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