Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masahiro Nishikawa0
Date of Patent
May 5, 2009
0Patent Application Number
114943600
Date Filed
July 26, 2006
0Patent Primary Examiner
Patent abstract
A protection apparatus is provided that can use a thermal fuse at higher voltage and higher current. The protection apparatus includes a protection circuit connected in series between a power supply and a load. The protection circuit includes a thermal fuse with a predetermined operating temperature, activated in response to sensing overheating of the power supply and/or load, and an electrosensitive fuse connected in parallel with the thermal fuse, and activated at a predetermined operating current. The electrosensitive fuse is adapted to be activated only after the thermal fuse has been activated at the predetermined operating temperature.
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