[Boatanchors] [Milsurplus] Micamold Recovery

[Michael A. Bittner]

Does the silver migration phenomenon in mica caps only happen when they are in-circuit with voltage applied to them, or can it occur when they are just stored on the shelf?  I have many in the latter category.  Mike-W6MAB
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  ----- Original Message ----- 
  From: Mike Hanz 
  To: Jim Wilhite ; boatanchors at mailman.qth.net ; Milsurplus at mailman.qth.net 
  Sent: Wednesday, June 04, 2014 3:01 PM
  Subject: Re: [Milsurplus] [Boatanchors] Micamold Recovery


  On 6/4/2014 5:29 PM, Jim Wilhite wrote:
  > Some of us has already tried what Dave is attempting with results that 
  > were a lot less than stellar. 

  And the capacitors are even older now, so the results of life testing 
  the batch that initially passed his recent test screening will be even 
  more interesting.

  > While the process may work temporarily or may work on a few, it is not 
  > a cure for all of them.

  I don't believe Dave suggested anything like "a cure for all of them", 
  but perhaps I misunderstood his experimental goals.

  >   So is experience with the subject material considered "confirmation 
  > bias"?

  It's not for me to judge.  It's something that only each individual can 
  assess about himself and his self perception of reality as he sees it.  
  Sometimes it leads to enlightenment, sometimes entrenchment.  Either 
  way, it's none of my business.

  > I don't think the results will be productive enough to follow the 
  > process and, even if it works on a few of the caps, then the problem 
  > has had a high probability of failure in a short period to time.
  > I tried this approach back in the mid-50s and it wasn't worth it to me. 

  Aha!  The first sign of dire predictive failure! :-)   You'll notice I'm 
  not suggesting eventual vindication by either side.  I simply don't have 
  a hypothesis dog in the fight.  For those of you who do, God Bless, keep 
  it clean.

  > But whatever floats the boat.

  Completely agree.  (That's _my_ bias showing...heh, heh...)

    - Mike  KC4TOS

  > -----Original Message-----
  >
  > Exactly right, Robert.  We see other examples of this "confirmation
  > bias", and even when someone offers to do some work in checking out a
  > hypothesis, the bias then prompts the opponents of either side to turn
  > to dire predictions of failure or vindication.

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