Name the component that has positive temperature coeficient of resistance.
Asked by | 26th Jan, 2009, 02:53: PM
Commonly used PTC materials include:
- High density polyethylene filled with a carefully controlled amount of graphite, so that the volume increase at the glass transition temperature causes the conducting particles to break contact (also known as Polyswitch fuses)
- Titanate ceramic materials, which work by grain boundary effects
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Answered by | 28th Jan, 2009, 03:35: PM
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