Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1977-02-09
1978-06-13
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 73R, G01R 3102
Patent
active
040951723
ABSTRACT:
A vehicle antenna tester utilizes a transformer having three secondary windings, two of which operate a pair of incandescent lamps, the third of which being capable of operating a neon lamp. The first of the pair of lamps is energized by completing a circuit involving a pair of clamps, one of which is attached to chassis ground of the vehicle, while the other is attached to the shielding conductor at selective locations therealong, of the lead cable feeding the antenna to be tested. The other lamp is energized when a circuit is completed between selective locations along the length of the antenna and the isolated conductor feeding it and the third clamp of the present invention. The neon lamp will glow upon the presence of leakage resistance or a short circuit between the antenna and its associated isolated conductor and the shielding conductor or chassis ground. The apparatus is particularly useful in testing antenna and lead wire assemblies before and after installation to the vehicle, determining faulty grounding of the shielding conductor, breaks in the continuity of the lead wire and antenna proper and leakage paths between the antenna and the isolated conductor to chassis ground or the shielding conductor.
REFERENCES:
patent: 2000594 (1935-05-01), Hodgkinson
patent: 2550787 (1951-05-01), Dedman
patent: 2628999 (1953-02-01), DeBruyne
patent: 2858507 (1958-10-01), Liautaud et al.
patent: 2960654 (1960-11-01), Nelson
patent: 2994819 (1961-08-01), Vincent
patent: 3158804 (1964-11-01), Weissert
patent: 3643157 (1972-02-01), Ettelman
patent: 3648163 (1972-03-01), Pinner et al.
patent: 3736503 (1973-05-01), Coleman et al.
Farkas Robert D.
Strecker Gerard R.
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