Low cost automated system for evaluating the electrical characte

Details Low cost automated system for evaluating the electrical characte Low cost automated system for evaluating the electrical characte

1994-08-26

1996-01-23

Trammell, James P.

Boots, shoes, and leggings

422 62, G01R 100

Patent

active

054870143

ABSTRACT:
A system that provides an automated simultaneous measurement of the electal characteristics of a ferromagnetic material as a function of temperature and electric potential. The system utilizes a personal computer that interfaces with a DUT fixture through an interface measuring circuit that provides a means for remote control of the measurement process and insures a more timely and less manually intensive measuring process. The interface measuring circuit is composed of a temperature measuring circuit for measuring the temperature applied to the DUT, a capacitor measuring circuit for measuring the electric potential applied to the DUT, a high voltage power supply, a temperature plate power supply, a high voltage power supply driver, a digital voltage meter (DVM), and a DVM multiplexer. The system can utilize a humidity-free "dry" chamber (i.e. a desiccation chamber) to insure that the measurements of the DUT are reliable and accurate.

REFERENCES:
patent: 3774237 (1973-11-01), Hardway, Jr.
patent: 3793717 (1974-02-01), Desenkolb et al.
patent: 4399100 (1983-08-01), Zsolnay et al.

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