Apparatus for measuring characteristics of electronic devices

Details Apparatus for measuring characteristics of electronic devices Apparatus for measuring characteristics of electronic devices

1988-01-05

1989-04-04

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158D, 324158R, G01R 3122

Patent

active

048189340

ABSTRACT:
An electronic device measurement apparatus measures a characteristic of an electronic device under test (DUT) by applying a smoothly changing voltage from one terminal of a voltage supply to an ungrounded terminal of the DUT and detecting a current flowing through the DUT. The current flowing through the DUT does not include a looping error component. A current detection resistor is connected between another terminal of the voltage supply and a grounded terminal of the DUT. Since the voltage applied to the DUT is a sine squared wave voltage, the pure current flowing through the DUT is detected by detcting cosine-wave and sine-wave components from the ungrounded terminal of the DUT and obtaining the difference between the voltage across the current detection resistor and the cosine-wave and sine-wave components.

REFERENCES:
patent: 2577803 (1951-12-01), Pfann
patent: 3054954 (1962-09-01), Boscia et al.
patent: 3286180 (1966-11-01), Hubbs
patent: 3371276 (1968-02-01), Schiff
patent: 3707677 (1972-12-01), Duncan
patent: 3965420 (1976-06-01), Bennett
patent: 4127887 (1978-11-01), Tanaka et al.
patent: 4368425 (1983-01-01), Adams
patent: 4727318 (1988-02-01), Sakai et al.

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