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2nd October 2009, 05:58 AM
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#1 |
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diyAudio Member
Join Date: Oct 2006
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Aikido Resistor Help
Hi,
I have two boards from tubecad. the older 9pin stereo board and the newer 9pin All In One. I have some 6N1P tubes I would like to use on both boards. +B will be 250V. I currently have on the All in One gate resistors as 300ohms and R6,R7 as 221ohms. I lost my notes so don't remember why I selected these values. Please help me with the correct values so I don't kill myself. Thanks! 9 pin Stereo: R2,R4 ? R3,9,10 ? R8, R11 ? 9 pin All In One: R2,R5,R8 ? R3,R4 ? R6,R7 ? |
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2nd October 2009, 07:54 AM
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#2 | |
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diyAudio Member
Join Date: Sep 2003
Location: Southern Germany
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Quote:
I don't know the All In One-Boards, but I assume that the parts denotation is the same as on the RevA. boards. Edit: it is not the same!! Just looked it up, so everything is slightly different... parts values stay the same though since the schematic itself remains unchanged. 9 pin Stereo: R2, R4 cathode resistors of the first stage 221ohms R3, 9, 10 grid stoppers 300ohms (value can vary slightly) R8, R11 cathode resistors of the second stage (WCF) 221ohms but could possibly be run hotter...? (150ohms) All In One: R2,R5,R8 grid stoppers 300ohms (value can vary slightly) R3, R4 cathode resistors of the first stage 221ohms R6, R7 cathode resistors of the second stage (WCF) 221ohms Hope this helps 
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