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Audio and Video Talk
Valves / Vacuum Tubes
Mullard 5-10 stereo
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<blockquote data-quote="Ampdog" data-source="post: 854983" data-attributes="member: 144"><p>Ah Karel .... exactly what one was trying to avoid - a 'redesign' of the original 5-10!</p><p></p><p>But since yopu are going to use a more suitable valve for the phase inverter: The more common load resistors are some 47K or such, with the tail resistor to suit (10K - 22K). You do not need a high amplitude output signal to the EL84s, thus not a high 'standing' anode current.</p><p></p><p>[Caveat: You may notice from published information on low-? triodes in the Schmitt phase inverter (its real name) that the anode load resistor of the 'bottom' valve must be somewhat higher than the 'top' triode for equal signal amplitude to the power stages. Lets take that to PM after I have found some reading matter on that.]</p></blockquote><p></p>
[QUOTE="Ampdog, post: 854983, member: 144"] Ah Karel .... exactly what one was trying to avoid - a 'redesign' of the original 5-10! But since yopu are going to use a more suitable valve for the phase inverter: The more common load resistors are some 47K or such, with the tail resistor to suit (10K - 22K). You do not need a high amplitude output signal to the EL84s, thus not a high 'standing' anode current. [Caveat: You may notice from published information on low-? triodes in the Schmitt phase inverter (its real name) that the anode load resistor of the 'bottom' valve must be somewhat higher than the 'top' triode for equal signal amplitude to the power stages. Lets take that to PM after I have found some reading matter on that.] [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Mullard 5-10 stereo
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