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In Reply to: RE: Corrected Schematic.... posted by drummerwill on January 17, 2015 at 22:41:36
The correct value for the Bias meter resistor is 10 ohms !!
Willie
Follow Ups:
Thanks for the corrections drummerwill. I want to build this amp, so please indulge me to ask a few basic questions.1.)First, where should I connect the other primary line of the 5U4 filament transformer?
2.) Why are the B2+Lch (332V)and B2+Rchn (339v) voltages different and the voltage is 337v on the signal schematic?
3.) You show no values for the bypass caps. What are good starting values for the 26 and 45 tubes?
4.) There's a cap after the 24uf 630V in the PS with no specified value. Is it necessary?
5.) I would need two dual 26 supply, one for each channel, correct?
6.) Would two 5VDC 3A Wall Adapter Power Supply work for the 26 filament supplies or.. ?
7.) Two 2.5Vac transformers and associated caps and resistors, one for each channel are needed, correct?
8.) Can you direct me to a schematic for a LM335 based regulator? My searches shows the IC as a temp. sensor.
9.) I may have more questions later. I really need to build this amp!!
Thanks again for taking the time to share your work.
Regards,
David
Edits: 01/18/15
It looks unbelievably simple (good) on the signal side (not a lot of stuff in the way of the signal) to my non-DIY brain...and it works!
Observe, before you think. Think before you open your yap. Act on the basis of experience.
1) Not sure what you mean
2) Stupid record keeping mistakes. ( Shoot for approx. voltages)
3) This is not mine to give !
4) not specified.... it's all DIY
5) Yes
6) Give it a try !
7) YES
8) Google is your friend .
9) Please be careful ... and Have Fun !
Willie
Hello Willie,
Thanks for taking time to answer my questions.
1.)On the filament transformer for the 5U4, I only see one connection on the primary side.
8.) Google must not like me. The only reference to a LM335 is a temp sensor. A little help Please.
Thanks again,
David
Aww yes. must be a typo ... I think it's LM338 for a 3amp 3 term. V.R.
CT of the 5V PT not connected.
Willie
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