Parasitic-ground current indicator for electrical system

Details Parasitic-ground current indicator for electrical system Parasitic-ground current indicator for electrical system

1989-10-05

1991-10-08

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

340649, 324555, G08B 2100

Patent

active

050558285

ABSTRACT:
An electrical system contains two current-fed components having respective grounded housings. Each of these components is connected via a respective conductor to a common ground point. A signal-transmitting connection galvanically connects the housings two components to each other. A parasitic-current indicator is permanently installed in the system and detects parasitic currents (I.sub.S) flowing between the grounded housings and generates a warning at a predetermined signal level.

REFERENCES:
patent: 2499410 (1950-03-01), Nupp
patent: 4542302 (1985-09-01), Griffioen
patent: 4768215 (1988-08-01), Kiwaki et al.
patent: 4887029 (1989-12-01), Hemminger
The ARRL Handbook for the Radio Amateur, publ. American Radio Relay League, 65th Ed. 1988, pp. 8-35, 8-36.
"Radio Interference", Machlachlan et al., vol. 80, (Wireless World 1974), pp. 255-259.

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