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Old June 25th 09, 11:56 AM posted to rec.radio.amateur.antenna
ml ml is offline
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Default Odd lightning effect

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JIMMIE wrote:

On Jun 20, 1:45*pm, Bert Hyman wrote:
"Bill Ogden"

wrote:
The OT question is what kind of antenna effect (in the gift bag) would
activate it?


Maybe not an antenna effect at all, but the pressure wave that produced
the KA-BOOM pushed the switch.

--
Bert Hyman * * *St. Paul, MN *


Lightning can do some pretty strange things. I was given a RS color
computer years ago after it had been on the receiving end of a
lightning strike.
Already having one of these computers I proceded to check it out by
replacing the chips in my computer one at a time with the ones in the
fried computer( I know, not very smart). Well at the the end of all
the chip swapping my computer still worked. Power supply on the
damaged computer checked OK. A closer inspection of the circuit board
showd that some traces underneath the processor chip had ben
vaporized. Repairing these traces yielded a working computer. How the
lightning burned out these traces without frying the rest of the
computer was beyound my understanding.


Jimmie


guessing a large and fast ammount of lightning induced current
traveld along the ckt trace it got hot and fried creating the
open voltage no longer could pass and so never reached the
other parts ie chips etc


so prob by luck you had enough current to damage the trace dosn't
take much, but not enough to arc over and contine damage
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