Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1998-10-06
2000-09-05
Walberg, Teresa
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219548, 219511, 361106, H05B 102
Patent
active
061146722
ABSTRACT:
A PTC-element to be used as a protective device against overcurrent or overvoltage, of which the volume resistivity does not substantially differ before and after a high temperature processing, such as reflowing of solder, and can be preserved even after having been subjected to repeated tripping, which contains a non-conductive crystalline polymer and a particulate conductor material dispersed in the non-conducting crystalline polymer, wherein the particulate conductor material includes electro-conductive particles having irregular surface contours.
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Iwasaki Norikazu
Tamura Hisaya
Yamada Yukio
Yamazaki Toyoji
Fastovsky L
Sony Corporation
Walberg Teresa
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