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16th March 2009, 02:28 PM
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#1 |
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diyAudio Member
Join Date: Feb 2009
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Bias Voltage
Hi, I suspect this is a trivial point, but I have the bias current required for each power valve in my amp of 36.5mA and I am not sure how to work out the bias voltage from this to enable me to pick potentiometers. Could anybody advise me here?
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16th March 2009, 04:27 PM
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#2 |
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diyAudio Member
Join Date: Oct 2004
Location: Maui, Hawai'i, USA
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Just in order to keep this simple, what output tube are you using, and what voltage (plate to cathode) is it operating at?
Aloha, Poinz AudioTropic |
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16th March 2009, 04:42 PM
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#3 |
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diyAudio Member
Join Date: Feb 2009
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They're EL34's with 480V on the plate
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17th March 2009, 03:06 AM
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#4 |
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diyAudio Member
Join Date: Oct 2004
Location: Maui, Hawai'i, USA
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Mullard & Co. say about -42Vdc.
Aloha, Poinz AudioTropic |
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17th March 2009, 11:27 AM
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#5 |
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diyAudio Member
Join Date: Feb 2009
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Thank You, That would make sense
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