Hi, I had the opportunity to have in my hands a phono stage with a disproportionate cost, my nature of copying and self-building things led me to copy the very sophisticated power stage, which according to the manufacturer is also patented, yes it is a rectified and stabilized all tube power supply, since the power supply is the important part of a construction I would like to replicate it for my various pre and phono electronics mainly. For the avoidance of doubt and problems, I do not name the manufacturer or the model for the moment, the attached circuit is without the value of the components that I will add later, I only tell you the valves: V1 6x5gt, V2 ecl82, V4 ob2, before I want to know what you think and if it really is worth as much as they pay it.
Go wild.
Ps: I made the circuit 1: 1 like the original, and it is still under testing.
Go wild.
Ps: I made the circuit 1: 1 like the original, and it is still under testing.
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Is very expensive perfume worth the price you pay for it?
There are products that sell better the more you charge for it. With a very high price, buyers automatically assume that the quality must be exceptionally high.
I know very little about vacuum tubes but my unqualified guess is that there are semiconductor versions with at least the same technical performance.
Then the aesthetics?
There are products that sell better the more you charge for it. With a very high price, buyers automatically assume that the quality must be exceptionally high.
I know very little about vacuum tubes but my unqualified guess is that there are semiconductor versions with at least the same technical performance.
Then the aesthetics?
TUBE power supply? Sorry, but what century are we in? As usual, I dare not second guess Jan as he knows more about audio in his little finger than I will ever and half what I know I learned from him and John Curl!
What are your requirements for voltage, current and noise? For a very few bucks we can buy SS regs with noise in the low uV. If your noise floor is -130, what else do you need? If you need HV or HC, follow them with a MOSFET. Only good thing I see above is a pi-filter.
Clearly, I am not in the tube mystique world. The tube amps I built I converted to ss power and it improved them both. These days, the only tube I still use is my microwave and old scope. Cant afford to replace the scope.
What are your requirements for voltage, current and noise? For a very few bucks we can buy SS regs with noise in the low uV. If your noise floor is -130, what else do you need? If you need HV or HC, follow them with a MOSFET. Only good thing I see above is a pi-filter.
Clearly, I am not in the tube mystique world. The tube amps I built I converted to ss power and it improved them both. These days, the only tube I still use is my microwave and old scope. Cant afford to replace the scope.
And you just assume he is objective about it? How many do you think he would sell if he said something like 'I have this simple, nothing special power supply that is much worse than modern 20-century supplies and therefor I am going to sell if for $ 2,000'?
Jan
If You made circuit 1:1 as original, the circuit from the schematic does not working at all because You didn't connect ground plane. And it is dangerous, could cause damage...
As promised here is the parts list:
R1-470R
R2-820K
R5-150K
R6-65K
R7-130K
R8-43K
R9-1K
R10-120K
R11-15K
R12-68K
C6 / C7-40uF
C3 / C5-22uF
C4-47pF
L1-20H
Now here's my question, this power supply works with 370v input, if you want to change the output voltage, which components need to be replaced? in input I will use 300v
R1-470R
R2-820K
R5-150K
R6-65K
R7-130K
R8-43K
R9-1K
R10-120K
R11-15K
R12-68K
C6 / C7-40uF
C3 / C5-22uF
C4-47pF
L1-20H
Now here's my question, this power supply works with 370v input, if you want to change the output voltage, which components need to be replaced? in input I will use 300v
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