Device comprising a thermal fuse and a resistor
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United States of America Patent
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Jan 19, 2016
Grant Date -
Nov 7, 2013
app pub date -
Dec 28, 2011
filing date -
Dec 31, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention discloses a device comprising a thermal fuse and a resistor, the solid ceramic base of the wirewound resistor is changed to be hollow, forming a ceramic tube; the thermal fuse is placed in the solid ceramic base, the ceramic tube provides housing for the thermal fuse; a lead wire of the thermal fuse passes through an end cap of an end of the wirewound resistor, the other end of the thermal fuse extends out of the end cap of the other end of the wirewound resistor, the end cap of the wirewound resistor extends outwardly with a lead wire, then an epoxy resin is used to encapsulate the device. The present invention can be used as a basic unit and directly installed in an existing high-frequency charger; it is capable of replacing the existing simple wirewound resistor or the wirewound resistor with an external contact type thermal fuse, and realizing triple functions of general impedance, over-current fuse protection, and over-temperature protection in case of overload.
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