Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1998-03-09
2000-08-15
Leja, Ronald W.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
H02H 322
Patent
active
061045918
ABSTRACT:
A telephone line protection element constructed of three lead frames having contact fingers for holding therebetween a semiconductor cell providing overvoltage protection between the telephone line and the customer circuits. The lead frames are soldered to a resistive semiconductor material to provide a fail-safe mechanism that mechanically connects either the tip or ring telephone line conductors to ground if a sufficient overcurrent exists. In response to an overcurrent, the resistive semiconductor material generates heat and melts the solder in contact therewith, which allows a pre-bent member of the lead frame to move in contact with a ground terminal, thereby shunting the overcurrent to ground. The entire protection element includes very few components and is efficiently assembled and attached to the pins of a 5-pin module.
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A series of Physical Lead Frames utilized by employer of Applicant (Teccor Electronics, Inc.) to fabricate Triac Devices No Date.
Casey Kelly C.
McCoy Dennis M.
Leja Ronald W.
Teccor Electronics, Inc.
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