Metal oxide varistor having thermal cut-off function

Details Metal oxide varistor having thermal cut-off function Metal oxide varistor having thermal cut-off function

2007-07-24

2009-10-06

Lee, Kyung (Department: 2832)

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

C338S021000, C337S183000, C337S184000, C361S121000, C361S117000

Reexamination Certificate

active

07598840

ABSTRACT:
A MOV includes a MOV body, a first lead, a thermal cut-off fuse, a second lead and a silver electrode area. The MOV of the present invention employs the silver electrode area formed on and electrically coupled to the MOV body, thus the MOV has a lower inductance, which accordingly, enables the MOV to have a high and sound thermal conductivity. Hence, the MOV can fleetly and perfectly transfer heat to the thermal cut-off fuse in case of over-voltages, thus enabling the thermal cut-off fuse to cut off the power more quickly.

REFERENCES:
patent: 4538347 (1985-09-01), Palilla et al.
patent: 6094128 (2000-07-01), Bennett et al.
patent: 6636403 (2003-10-01), McLoughlin et al.

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