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Old 22nd Sep 2005, 10:26 pm   #5
ukcol
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Join Date: May 2003
Location: Harlaxton, Lincolnshire, UK.
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Default Re: Whiskers in germanium transistors etc

Quote:
Originally Posted by darren-uk
Over the years I have kinda studied this problem and it does seem the whiskers are more likely to appear when a radio is left disused for long periods and much less so when in regular use.
That's a very interesting observation Darren and throws a new light on the process as far as I am concerned. I had always supposed (and not based on any experiments or observations) that the process of these whiskers growing may be an electrical one; that the whiskers may grow as the result of an electric field from a point of one electrical potential to another. Since you have observed that the process is more vigorous when the transistor is not in use this explanation is less likely. Has anyone observed whether the whisker grows from the case to the transistor, or the reverse, or if the whisker grows from both ends and meets in the middle?
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