Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1984-05-07
1986-09-02
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 57N, 343812, 343878, 455 67, G01R 3108, H01Q 2112
Patent
active
046098666
ABSTRACT:
A portable electrical systems interference detector and locator comprises a circuitry housing box which mounts a two-piece antenna having forward section formed of dielectric material and a metal aft section which mounts both a folded dipole UHF driven antenna element and an active VHF driven extendable dipole antenna element. The locator includes circuitry by which both UHF and VHF inputs are received, amplified, and delivered to a field strength meter. Audio noise and/or signal output from the meter is delivered through an audio amplifier to a speaker for use by an operator for the purpose of locating the direction of strongest noise and/or signal whereby the location of a sparking or other defect in an electrical system can be ascertained.
REFERENCES:
patent: 3487415 (1969-12-01), Simons
patent: 3636641 (1972-01-01), Daskam
patent: 4072899 (1978-02-01), Shimp
Stecher, VHF-UHF Test Receiver ESU 2 Becomes Field-Strength Meter and Selective Analyzer, News from Rohde & Schwartz, vol. 16, No. 73, pp. 10-13, 1976.
Eisenzopf Reinhard J.
Harvey Jack B.
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