Telecommunications T1 carrier overvoltage and fiber to curb powe

Details Telecommunications T1 carrier overvoltage and fiber to curb powe Telecommunications T1 carrier overvoltage and fiber to curb powe

1994-05-12

1996-02-06

Hofsass, Jeffery A.

Telephonic communications

Subscriber line or transmission line interface

Protective circuit

379377, 361119, 361110, H02H 904

Patent

active

054902150

ABSTRACT:
A fiber to curb and telecommunications T1 carrier overvoltage protection apparatus includes a pair of semiconductor junction breakdown crowbar devices connected in series between TIP and RING telephone lines, and a reverse standoff voltage breakdown zener-type device connected between ground potential and a junction connection of the series connected semiconductor junction breakdown crowbar devices.

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patent: 4947426 (1990-08-01), Montano
patent: 4991051 (1991-04-01), Hung

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