Power supply for phono stage

[kuly]

I ask for advice-you need a very good power supply circuit for a phono tube
preamp

2-tube ecc83 +2 tube ecc88. (attach)
advise the scheme. or a ready fee

250-- v. anode feed
6.3 -v heat
12 - v
I will buy a transformer for the needs of
I do not want to have an AC background

 

[kodabmx]

I use a 12V SMPS. I run heaters in series for 12V, and run a boost converter to get 280V. It's silent, and you can run it from a battery if you like. It's also smaller, more efficient, and cheaper.


DC-AC Converter 12V to 110V 200V 220V 280V 150W Inverter Boost Board Transformer | eBay

 

[kuly]

I think - where do I take 12 volts !!! ??? how many mAmper

I have two lamps-12 volts glow and also two lamps of 6 volts glow

all four lamps hang-on one tap ??? 12 volts ??

 

[kodabmx]

For a phono preamp, I use a 12V 10A brick.
AC 100-240V To DC 12V 2/3/4/5/6/8/10A Power Supply Adapter Transformer LED Strip | eBay


Connect the 12V tubes in parallel, and the 6V tubes in series.
All four tubes and the boost converter run from the single 12V supply.

 

[kuly]

ok!!!!
who then applied this to the phono stage? really have reviews or read the article-there are comments of the person who applied it? in the phono stage?

I want to read the article - or see the photo!

Thank you so much!!! -It is very interesting !

can? to put a resistor to get 250 volts?

6) Current with 12V interface (No-load): 250mA

 

[kodabmx]

I did. Here's a much better circuit for phono I built. Yes, you can use an RC filter to get 250V.
EDIT: the one resistor that got too hot was due to a short. It still works fine, so I left it instead of changing it.

 

[kuly]

WOW)))))) best))
At night, when quietly quiet --- the background noise of the network is ??
a little bit is there ?? or very quiet that there is no noise at all ?? complete silence of the network ???

or you have a battery, a separate, not a network

 

[kodabmx]

It's completely silent. If there was any noise (there isn't, I scoped it) it would be around 35kHz. The entire thing will run off of a battery if you want it to, too!

I use SMPS and boost on most of my builds. Yesterday I built a 6P45S triode connected amp (80W) powered from an ATX supply and a 500W boost converter Even the module I listed above set to 110V for negative bias. (it's isolated)
I also built a GU-29 amp using these. They work better than linear and cost less to use. Win/win if you ask me

 

[kuly]

Persuaded))). I also buy - I'll listen
if there is noise - I will assemble another block ------ THANKS !!!!

I wanted to assemble the power unit I need 150-200 dollars roughly-kenotron-capacitors-resistors --- expensive
If it plays as it should - it's a huge savings

THANKS !!!!THANKS !!!!THANKS !!!!

 

[kuly]

tell me - what resistor how many watts? that would have turned 250V ????

 

[nigelwright7557]

You could drop mains to 12VAC volts for heaters using a transformer.
Then lift 12VAC to high VAC using backwards 9 VAC mains transformer wired backwards.

 

[kuly]

I do not translate English well - I do not understand

 

[nigelwright7557]

First transformer converts 240VAC to 12VAC for heaters.
Put the 12VAC into secondary of a 9VAC mains transformer and take high voltage out from second transformer primary.

 

[kuly]

I bought, I will wait))))) I hope to get it soon

how do you feel your advice --- everything is correct-about ???

 

[kuly]

hi

I ask your advice ---
Is it necessary to connect so ??? I see you in the photo! It is right?

 

[kodabmx]

Yes because it's isolated.

 

[kuly]

ok

 

[kuly]

no sound ---- ate badly heard

if I disconnect from the network - a little more sound

where there is a mistake-- I can’t find (((

 

[kodabmx]

I don't see the power light. 12V ground and 280V ground and circuit ground must connect.

 

[kuly]

see

probably there is an error, in my circuit or wiring the common wire--

--there is still a suspicion - ecc88 lamps - bad
bought new on ebay