-=> Jasen Betts said to George White
 -=> about "{at}%^{at}#$%^ VEROBOARD" on 03-25-04  17:20.....

 JB> the really old ones were bimetalic.  those capacitor ones don't work
 JB> to well when they get hot... (I've not compared a bimetalic one's
 JB> performance) 

I've heard of bimetalic flashers, but I doubt that they ever
existed in real life.

Most bimetal relays I came across were part of overload cutouts,
and they were FAR too slow for auto turning indicators.

I did see one bimetal relay used as a timer. The bimetal unit was
extremely tiny, and was heated by a coil around it. But it was so
tiny it could only operate a tiny microswitch contact, and the
shortest time delay it would work down to was about 20-30
seconds.

I have seen thermal flashers from US, British, Euro and Japanese
cars. They all used a VERY thin wire that stretched when heated.

The thermal inertia was thousands of times lower than the
smallest bimetal strip I ever saw, and even then they couldn't
flash faster than about 2-3 times a second.

   ,-./\
  /     \ From Greg Mayman, in beautiful Adelaide, South Australia
  \_,-*_/    "Queen City of The South"    34:55 S  138:36 E
       v

... Maybe I'm wrong.... But, who is to say what's right?
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