Solid state telephone protector module

Details Solid state telephone protector module Solid state telephone protector module

1989-09-28

1990-07-24

Ng, Jin F.

Telephonic communications

Subscriber line or transmission line interface

Protective circuit

361119, 361124, H02H 322

Patent

active

049440039

ABSTRACT:
An individual subscriber circuit protector module employing solid state circuitry for protection against momentary voltage surges, and having firmly sensitive heat coil assemblies for protecting against continuous excess current surges. Fail-safe protection is also provided which becomes operative in the event of failure of the heat coil protection.

REFERENCES:
patent: 4796150 (1989-01-01), Dickey et al.
patent: 4856060 (1989-08-01), Meyerhoefer et al.

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