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12AX7, EL34 or 6L6 design wanted
12AX7, EL34 or 6L6 design wanted
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Old 10th September 2005, 11:37 AM   #21
Fiat1 is offline Fiat1
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Thanks for the reply! That would be great if you could help out with a diagram. If I were to run it at 250v B+ what sort of current would it draw?
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Old 10th September 2005, 11:53 AM   #22
Johan Potgieter is offline Johan Potgieter  South Africa
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About 140 - 150mA in class-A - but I don't want to hi-jack Aletheian's design. As said, will return after week-end if necessary.
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Old 13th September 2005, 06:35 PM   #23
aletheian is offline aletheian  United States
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Dude... hijack away. I drew that amp up in a few minutes, so tweak as neccessary.
As far as the ecc's, the voltage that shows up on the plate will drop across the Rp. I have run cathode followers too that tied the plates of a 12ax7 directly to a 400+v supply, and they lived long happy (albeit hot) lives
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