Likely reverse voltage spikes from the supply. They can't take reverse voltage
at all.

The design is full of faults - the glow plug problem and the firebomb issue.
Martin
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder



Dave Hinz wrote:
On Wed, 14 Sep 2005 17:30:02 GMT, Lloyd E. Sponenburgh wrote:

"Dave Hinz" wrote in message
...


Worse, though, are tantalum capacitors. That taste stays with you for
_days_.


Along with the holes in your acoustic ceiling tiles, if you happen to hook
one up in reverse! G


I actually had one fail and it was brand new, and _apparently_ installed
with the proper polarity. I suspect it was mis-marked. Exciting, _and_
foul. Something about a timing circuit, probably back in the days when
555s and 74LS something were new and exciting.


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