Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1984-05-04
1987-05-26
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
73DIG4, G01R 2922
Patent
active
046689095
ABSTRACT:
An arrangement for testing substrate material intended for use in surface acoustic wave devices such as delay lines; the arrangement includes a plurality of electrical and physical evaluations of the material in quantities suitable for a manufacturing environment. In one evaluation acoustic wave energy developed in a tooling jig mounted transducer is mechanically coupled to successive material samples and the resulting output waveforms compared to expected results while in other evaluations the polarized light indicia and chemical reagent determined properties of the material samples are considered.
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patent: 4464639 (1984-08-01), Staples
Grenier, Crystal Resonance Frequency Measurement by Phase Detection, 7-1970, pp. 15-19.
Adamo Michael D.
Cho Frederick Y. T.
Hickernell Frederick S.
Eisenzopf Reinhard J.
Harvey Jack B.
Hollins Gerald B.
Singer Donald J.
The United States of America as represented by the Secretary of
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