Regulated psu for tube preamp

wuffer · 13th October 2005, 11:37 AM

i was thinking if it would be possible to make a regulated psu for an tube preamp..

it should have 6v 0.8a and 40v 1a.. ground is the same...

is it possible??

Brett · 13th October 2005, 11:47 AM

Quote:

Originally posted by wuffer
i was thinking if it would be possible to make a regulated psu for an tube preamp..

it should have 6v 0.8a and 40v 1a.. ground is the same...

is it possible??

The heaters I understand, but 40V at 1A? Huh?

Of course you can do a regulated PS for a tube preamp. I like shunt regs best myself.

amperex · 13th October 2005, 11:51 AM

I do not know of any tubes that operate linear at 40 volts plate. TI made a floating type 3-terminal regulator that operated up to 120 volts output @ 1 amp.

wuffer · 13th October 2005, 12:11 PM

thanks..
tubes are 6J5-GT

SY · 13th October 2005, 12:19 PM

You'll need a minimum of 100V on the plates, which means a supply in the 200-400V range. Unless you're going to run 50 of them, you don't need anything like 1A.

wuffer · 13th October 2005, 12:26 PM

i have heard it with a normal psu with big caps and 40v and it sound good, very good

can se the transformer is 24-30v 1a and should be 32-42v after the rectifier and caps so i want the same just want to try the regulated psu instead

SvErD · 13th October 2005, 12:27 PM

I bet it's this one, plays very nice by the way even though it's not textbook........

http://www.diyaudio.com/forums/showt...443#post131443

wuffer · 13th October 2005, 12:30 PM

Quote:

Originally posted by SvErD
I bet it's this one, plays very nice by the way even though it's not textbook........

http://www.diyaudio.com/forums/showt...443#post131443

looks like the one i want to build

the bastard

SvErD · 13th October 2005, 12:56 PM

Jepp, it's the B*A*S*T*A*R*D from Ny Elektronikk. I built mine 10-12 years ago and still use it i one of my systems.

I use some old L63 tubes by the way.

wuffer · 13th October 2005, 12:59 PM

sounds good

i have the construction manual here and 1 pcb..
i would go after the 6J5-GT tubes.. those i can get..

what pots are you using for volume

13th October 2005, 11:37 AM	#1
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	Regulated psu for tube preamp i was thinking if it would be possible to make a regulated psu for an tube preamp.. it should have 6v 0.8a and 40v 1a.. ground is the same... is it possible??

13th October 2005, 12:19 PM	#5
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	You'll need a minimum of 100V on the plates, which means a supply in the 200-400V range. Unless you're going to run 50 of them, you don't need anything like 1A. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

13th October 2005, 12:27 PM	#7
SvErD diyAudio Member Join Date: Jan 2002 Location: Norway	I bet it's this one, plays very nice by the way even though it's not textbook........ http://www.diyaudio.com/forums/showt...443#post131443 __________________ I don't suffer from insanity, I enjoy every minute of it!

13th October 2005, 12:56 PM	#9
SvErD diyAudio Member Join Date: Jan 2002 Location: Norway	Jepp, it's the BASTARD from Ny Elektronikk. I built mine 10-12 years ago and still use it i one of my systems. I use some old L63 tubes by the way. __________________ I don't suffer from insanity, I enjoy every minute of it!

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13th October 2005, 11:51 AM	#3
amperex diyAudio Member Join Date: Feb 2005 Location: MI	I do not know of any tubes that operate linear at 40 volts plate. TI made a floating type 3-terminal regulator that operated up to 120 volts output @ 1 amp.

13th October 2005, 12:11 PM	#4
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	thanks.. tubes are 6J5-GT

13th October 2005, 12:26 PM	#6
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	i have heard it with a normal psu with big caps and 40v and it sound good, very good can se the transformer is 24-30v 1a and should be 32-42v after the rectifier and caps so i want the same just want to try the regulated psu instead

13th October 2005, 12:59 PM	#10
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	sounds good i have the construction manual here and 1 pcb.. i would go after the 6J5-GT tubes.. those i can get.. what pots are you using for volume

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