Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1977-02-16
1978-02-14
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324 60C, 324158T, G01R 3122
Patent
active
040741958
ABSTRACT:
An apparatus for testing the operating state of single and multiple semiconductor junctions, either in or out of circuit. The tester includes a testing circuit which in turn includes a transformer having a secondary with plurality of voltage tap leads, which are selectively connectable by a switching device to a resistance and voltage divider array, which includes means adapted to receive the junction to be tested. The output of the testing circuit is applied to a display circuit which includes a visual indicator, which in turn produces a trace having a configuration representative of the forward and reverse characteristics of the junction, for inspection by an operator. The variety of voltages available at the secondary of the transformer and the variety of resistance and voltage divider combinations available permit the safe testing of a wide variety of junctions, including multiple junctions.
REFERENCES:
patent: 3973198 (1976-08-01), Hunt
Grant, H. C., "Zener Diode Presenter. . .", Semiconductor Products; Jan. 1962; pp. 34-37.
Karlsen Ernest F.
Rolinec Rudolph V.
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