Electrical outlet monitor

Details Electrical outlet monitor Electrical outlet monitor

1989-01-19

1990-05-29

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Conductor identification or location

324133, 324508, 324509, 324149, 324556, G01R 3104, G01R 3102

Patent

active

049298879

ABSTRACT:
A monitor for detecting miswiring in standard 3-spade AC electrical outlets. The monitor includes a housing, prongs for insertion into the outlet to be tested, outlet ports for an external plug, and a banana jack for a wrist strap or other anti-static device. If the outlet is properly wired, a lamp will illuminate. If, however, the outlet is miswired, one of two silicon controlled rectifiers will shunt current around the lamp, extinguishing it, indicating to the user the presence of a faulty outlet. A junction field effect transistor is also provided to activate one of the silicon controlled rectifiers when one particular miswiring condition is present.

REFERENCES:
patent: 3798540 (1974-03-01), Darden
patent: 3810003 (1974-05-01), Portoulas
patent: 3952244 (1976-04-01), Spear
patent: 4082995 (1978-04-01), Rhude

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