Telephonic communications – Subscriber line or transmission line interface – Protective circuit
Patent
1988-05-31
1989-10-24
Dwyer, James L.
Telephonic communications
Subscriber line or transmission line interface
Protective circuit
361119, 361 56, H04M 174
Patent
active
048767131
ABSTRACT:
A solid state protector device is disclosed for protecting a consumer's solid state electronic circuits from abnormal voltage and current surges. The device comprises an enclosure made of electrically non-conductive material having front, rear, side, top and bottom walls. A protector circuit is disposed in the enclosure for protecting electronic equipment from abnormal current and voltage surges. The protective circuit has an input terminal, an output terminal and a ground terminal. An input connector for receiving an input circuit signal is disposed in the front wall of said enclosure and electrically connected to the input terminal of said protector circuit. An output connector for conducting said circuit signal to the electronic equipment to be protected is disposed in the front wall of said enclosure and electrically connected to the output terminal of said protector circuit. A plug is used for connection to an outside ground and is disposed in the rear wall of said enclosure.
REFERENCES:
patent: 4438477 (1984-03-01), Cawley
patent: 4477857 (1984-10-01), Crocker
patent: 4584622 (1986-04-01), Crosby et al.
patent: 4695916 (1987-09-01), Satoh et al.
Crosby John J.
Napiorkowski John J.
Dwyer James L.
GTE Products Corporation
Theodosopoulos James
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