Circuit element measuring method and apparatus

Details Circuit element measuring method and apparatus Circuit element measuring method and apparatus

1991-02-22

1992-02-04

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

With auxiliary means to condition stimulus/response signals

324650, 324613, 330149, G01R 2700

Patent

active

050862782

ABSTRACT:
The circuit element being measured is connected to a signal source, a volt meter, a zero detection amplifier and a voltage controlled current source for drawing an electric current through the device to be measured in accordance with the output of the zero detection amplifier. Means are provided for changing the operating point of the zero detection amplifier in response to a measuring condition of the apparatus.

REFERENCES:
patent: 4264871 (1981-04-01), Forward
patent: 4496909 (1985-01-01), Knapp
patent: 4577160 (1986-03-01), Lettvin
patent: 4905308 (1990-02-01), Davidson
Hashimoto: "An Automatic Wide-Range Digital LCR Meter"--HP Journal, Sep. 1976.

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