Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-10-16
1977-06-07
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 34RS, 73 702, G01R 3102
Patent
active
040286150
ABSTRACT:
Method of and apparatus for testing magnetostrictive reed contacts for poorly conductive surface contamination. The reed contact is closed in a magnetic field generated by a direct current. An alternating current is conducted through the closed reed contact, the frequency sweeping through the torsional resonant frequency of the contact reeds. The tested contact surface of the contact reeds is thus maximized. The voltage generated across the reed contact by the alternating current is then measured.
REFERENCES:
patent: 3253214 (1966-05-01), Heilweil
patent: 3743927 (1973-07-01), Bridges
patent: 3745447 (1973-07-01), Jaster
patent: 3822398 (1974-07-01), Rovnyak
Gerritsen Frederik Hendrik
Glashorster Johan Hendrik Adolph
Jansen Friedrich Ludwig
Rolinec Rudolph V.
Tokar Michael J.
Treacy David R.
Trifari Frank R.
U.S. Philips Corporation
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