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DIY For Audio
6L6 UL PP valveamp build thread
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<blockquote data-quote="handsome" data-source="post: 1025419" data-attributes="member: 772"><p>You need to set your output tube bias correctly before measuring all your voltages - output stage draws the most current so will have the biggest influence on the HT voltages. </p><p></p><p>Your ultimate HT voltages aren't as important as each valves bias voltage, current and anode voltage. Best to print a schematic and mark all your measured voltages on there. Then calculate the currents (across anode and cathode resistors) add them to your diagram and you'll quickly see where your build deviates from the design and often what (if any) the problem is. </p><p></p><p>Sent from my SM-A500F using Tapatalk</p></blockquote><p></p>
[QUOTE="handsome, post: 1025419, member: 772"] You need to set your output tube bias correctly before measuring all your voltages - output stage draws the most current so will have the biggest influence on the HT voltages. Your ultimate HT voltages aren't as important as each valves bias voltage, current and anode voltage. Best to print a schematic and mark all your measured voltages on there. Then calculate the currents (across anode and cathode resistors) add them to your diagram and you'll quickly see where your build deviates from the design and often what (if any) the problem is. Sent from my SM-A500F using Tapatalk [/QUOTE]
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DIY & Tutorials
DIY For Audio
6L6 UL PP valveamp build thread
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