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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: Medium mu posted by Adagio on March 7, 2014 at 15:04:37:
TubeAcolyte got it, low, medium and high are common descriptors for tubes based on their Mu. High gain tubes are generally useful for preamps and low signal applications. They aren't for delivering power. Low Mu tubes generall have more grunt and are used in power supplies. Most OTL amps use low Mu tubes because of their current passing ability. The medium Mu guys are tweeners, as they approach the borders of low and high, some designers have learned how to coax the desired performance out of them. Don't think that medium or low Mu is a deficiency due to (relatively) reduced gain.Their designs are part of the witches brew of capabilities exploited by designers with a purpose. As stated the three fundamental triode parameters, mu, gm and rp, are generally functions of the plate current you can tolerate. many tube data sheets show which are more sensitive to Ip. If you don't know or understand this you should find a basic book on tubes, the three parameters are coupled and constrained by the tube's power handling ability. if you think there are too many balls in the air at one time, you're right. That's why many of the classic designers found something that worked and stuck with it, and why we amateurs explore new combinations of tubes.
Sorry for being a redundant windbag,.
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Follow Ups
- RE: Medium mu - ice_cream_man 15:04:49 03/12/14 (0)
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