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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: the effect of feedback on output impedance posted by Ralph on July 30, 2012 at 13:34:44:
Ralph, I remember you once saying that you don't want the mu of your output tubes to be too high. And I don't quite know why. The 7242 is kind of a higher mu version of the 7241. (I think it gives up something in terms of Gm to the 7241, however.) But it always tempted me, because with its higher mu, and since the output Z of the circlotron is inversely related to mu, I could imagine it would give low output Z for only a couple of tubes per channel. The 7242 is just as unobtainable as the 7241, but what about the principle involved? Wouldn't a higher mu output tube be a good choice, assuming low Rp and decent Gm?
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Follow Ups
- 7242 for higher mu? - Lew 12:48:49 07/31/12 (1)
- RE: 7242 for higher mu? - Ralph 13:03:52 07/31/12 (0)
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