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US 5,490,215 AGranted
Telecommunications T1 carrier overvoltage and fiber to curb power protector
AssigneeOneac Corporation
InventorDimitris J. Pelegris
Life of this patent
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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.
Claims9
A fiber to curb and telecommunications T1 carrier overvoltage protection apparatus comprising:
- a pair of semiconductor junction breakdown crowbar devices connected in series between TIP and RING telephone lines;
- a reverse standoff voltage breakdown zener-type device connected between a ground potential and a junction connection of said series connected semiconductor junction breakdown crowbar devices;
- said reverse standoff voltage breakdown zener-type device having a voltage breakdown rating above a power supply voltage on the TIP and RING telephone lines and said semiconductor junction breakdown crowbar devices being low capacitance, bidirectional devices, and
- a fail safe device coupled to said pair of semiconductor junction breakdown crowbar devices.
1 more element
Dependencies are inferred from the claim text.