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From: Shaun on 18 Jun 2010 20:27

"N_Cook" <diverse(a)tcp.co.uk> wrote in message
news:hvfmqb$tf7$2(a)news.eternal-september.org...
> When did they first arrive and do they always have an unusual body colour?
> There is a patent reference to 1977 but when would the first appearance in
> domestic equipment have been ?.
> Resistors that fail open circuit if a designed-in current capacity weak
> point is exceeded , fuse-fashion, not just the thermal limit of the body ,
> so often no overheating discolouration to the body or surrounding board
>

Fusistors have been used in test equipment for many years in the input
section. Fluke uses them in all the meters.
I know, I've replaced many in the past.

Shaun



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