Conductive polymer devices having leads with reduced...

Details Conductive polymer devices having leads with reduced... Conductive polymer devices having leads with reduced...

H - Electricity

01

C

356/107

H01C 7/02 (2006.01) H01C 1/016 (2006.01) H01C 1/14 (2006.01) H05B 3/14 (2006.01) H05K 3/30 (2006.01)

Patent

CA 1250961

ABSTRACT OF THE INVENTION Circuit protection devices which contain PTC conductive polymer elements and which are used in situations in which the device is mounted onto, or itself comprises, a rigid wall which is spaced apart from the PTC element and through which the electrodes pass. The behavior of the device can be adversely affected if the electrodes, which are prevented from moving by the rigid wall, prevent the PTC element from expanding to the extent necessary to provide the desired PTC effect. The invention includes the use of specially designed electrodes or any other novel means which lessens the danger that the PTC element, when it is tripped, is prevented from expanding to the extent necessary for effective operation. In a typical device, each of the electrodes comprises a stranded wire portion adjacent the PTC element and a solid wire portion remote from the PTC element.

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