Thermally fused resistor having a portion of a solder loop thermally connected to an electrically insulated portion of an outer surface of the resistor
First Claim
1. A thermally fused resistor arrangement comprising:
- a resistor having one end thereof electrically connected to a first resistor terminal, and having an outer surface;
a solder loop electrically connecting an opposite end of said resistor to a second resistor terminal; and
means for thermally connecting a portion of said solder loop to an electrically insulated portion of said outer resistor surface.
9 Assignments
0 Petitions
Accused Products
Abstract
A thermally fused resistor arrangement wherein a resistor is electrically connected at one end to a first resistor terminal and at an opposite end to a second resistor terminal. A solder loop is provided to make the electrical connection between one end of the resistor and its corresponding resistor terminal. A portion of the solder loop is positioned in contact with an electrically insulated portion of the surface of the resistor, preferably corresponding to the hot spot of the resistor, and a thermally conductive medium is provided to thermally and mechanically attach the solder loop to the electrically insulated portion of the resistor surface. The portion of the solder loop thermally attached to the resistor is operable to melt when the temperature of the resistor increases to within a predefined temperature range, thereby electrically disconnecting the end of the resistor from its corresponding resistor terminal.
26 Citations
21 Claims
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1. A thermally fused resistor arrangement comprising:
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a resistor having one end thereof electrically connected to a first resistor terminal, and having an outer surface; a solder loop electrically connecting an opposite end of said resistor to a second resistor terminal; and means for thermally connecting a portion of said solder loop to an electrically insulated portion of said outer resistor surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of making a thermally fused resistor, the method comprising the steps of:
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providing a resistor having one end thereof electrically connected to a first resistor terminal, and having an outer surface; electrically connecting a solder loop between an opposite end of said resistor and a second resistor terminal; and thermally connecting a portion of said solder loop to an electrically insulated portion of said outer resistor surface. - View Dependent Claims (13, 14, 15, 16)
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17. In combination:
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a substrate; a film-type resistor defined on said substrate, and having one end thereof electrically connected to a first resistor terminal and an opposite end electrically connected to a second resistor terminal; and a thermally activated fuse arrangement for electrically disconnecting said one end of said film-type resistor from said first terminal in response to heat generated by said resistor within a predefined temperature range, said fuse arrangement comprising; an electrical insulation layer in contact with at least a portion of an outer surface of said film-type resistor; and a fuse establishing said electrical connection between said one end of said film-type resistor and said first terminal, and having a portion thereof in thermal contact with a portion of said electrical insulation layer. - View Dependent Claims (18, 19, 20, 21)
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Specification