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Old 29th November 2012, 05:32 PM   #11
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Elvee: You need to clean out your parts bin! These are not even carbon film, but carbon composition resistors. Menace of servic techies everywhere! E
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Old 29th November 2012, 07:28 PM   #12
Elvee is offline Elvee  Belgium
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Quote:
Originally Posted by mickeymoose View Post
Elvee: You need to clean out your parts bin! These are not even carbon film, but carbon composition resistors. Menace of servic techies everywhere! E
I thought the topic was about carb comp resistors?
Quote:
Originally Posted by johnm View Post
../..
I'm well aware that they are[/U]), could one bake the resistors to drive out this moisture? Hi-Fi Collective mention the following baking process on their website for NOS Allen Bradley resistors:

[I]"...Allen Bradley resistors are carbon composite, being made of an organic material they do have the tendency to absorb water from the atmosphere.
Or maybe the OP is mistaken?
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Old 29th November 2012, 07:49 PM   #13
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What vintage is the Quad? I cant recall carb comp beeing used after the mid/late 60's (tube time). And I cant believe that Quad would have ever used them
Low value Rs (<100 Ohm), like in your picture, sometimes where wirewound, differnt animal, but you can not tell from the outside
The reason I mentioned the temperatur (dis)coefficient of carbon resistors was an experience I had in a hospital, consulting, where the techs where using CF resistors to repair lifesafety equipment. Scarey! E
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Old 29th November 2012, 07:59 PM   #14
Elvee is offline Elvee  Belgium
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I have seen equipment as late as the nineties using carb comp (exclusively US)
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Old 29th November 2012, 08:09 PM   #15
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Ouch, that hurts! E
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Old 30th November 2012, 07:40 AM   #16
405man is offline 405man  Scotland
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With care you can remove the resistor contents and preserve the outer case, you could then insert modern resistors and re-seal the ends

Stuart
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