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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: Fire up antique tubes posted by Rob Mercure on August 14, 2006 at 08:18:56:
Rob, hi. Bringing ancient power amplifiers (tubes) up slowly is always a good idea. That you don't think so speaks volumes.Now to the subject of cathode stripping from the article, A Heated Discussion on a Hot Topic and other dreadful puns - AudioXpress as revised by the author.
"Cathode stripping occurs when the outflow of electrons from the cathode exceeds, even momentarily, the available electrons in the space charge. This causes permanent electrochemical changes in the emissive coating which reduces the emission available, thus reducing space charge, making further stripping more likely. Cathode stripping will occur when the potential difference between plate and cathode is established before the cathode has reached full emission, so some form of B+ delay is very important for all vacuum tubes using oxide coated cathodes."
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Follow Ups
- Cathode Stripping and other things - elektron 12:05:20 08/14/06 (2)
- Re: Cathode Stripping and other things - elflow 12:58:29 08/14/06 (0)
- Re: Cathode Stripping and other things - Rob Mercure 12:39:54 08/14/06 (0)
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