That works for me!
OK, I threw it together in a "quick and dirty" simulation.

See the attached.

The positive and negative rails work out to be around 35v.

The B+ for the tube/valve will be near 60v.

You'll need a transformer that has a center-tapped 24VAC secondary winding, (24v-0v-24v) or two separate windings. It'll need to be rated for at least 150VA (150 Watts).

You'll also need a secondary that is 18v-0v-18v, but that one can be rated for much less power. It's supplying the plate voltage for the preamp, which will draw comparatively little current.

You'll also need a 9v secondary winding for J7 to supply the filament current.
A quick search turned up this page:
http://www.drtube.com/tubedata.htm
Looks like your heater will draw 365mA current. You could use a wall wart rated for 9vac @ 350mA - 400mA

 

We have no clue where you are located (adding that info to your profile is a good idea) so we don't know where to suggest to look for suitable transformers.

The 24-0-24 may be listed as 48v center tapped.

Here's a 24v/48v transformer that would work:
http://mouser.com/ProductDetail/Tri...=sGAEpiMZZMv4oUrzpPKU3A2NOXuypJmAngR2Fh1SFW8=
That's actually not too expensive considering the power your amp requires.

Here's an 18v/36v transformer you'd need in addition to the above:
http://mouser.com/ProductDetail/Tri...EpiMZZMv4oUrzpPKU3O%2bui9ulA%2bFliTLs5r6hyK8=
You'll still need a 9vac transformer.

 

WOW I didn't think it was gonna be that compliated!!!!! I'm in Toronto Canada

So basically this amp would hug 3 AC outlets??

 

Hi
The transformer schematic says that the power IC uses the source of 48 volts center tapped and a fullwave bridge rectifier to provide +30 and -30 VDC. The interesting thing is that the tube uses 24v plus 18v = 42 vac and rectify to produce about more than +50 vdc, then it is regulated to provide B+ for the anode of the tube. This kind of tube can work at relatively low anode voltage. In this case the tube is working as cathode follower, there is no voltage gain.

If you have only 48vct transformer , then you can use one branch of 24 vac to get half wave double voltage rectified to provide B+ for the tube. The schematic of double voltage rectifier is very popular.

 

Well, our OP's board wasn't designed with a voltage doubler circuit built in. Arguably, it wouldn't be very difficult to do so - and I don't know why the designer didn't put that feature in from the beginning. I don't know how comfortable Frenchie29 would be with making such modifications to their already-assembled project.

It would also mean having HV sort of floating in midair, due to the additional caps & diodes that would be necessary.

The three transformers don't necessarily have to occupy three outlets; you could wire the transformers all together in an enclosure, and have just one power cord.

 

Simpler the better for me as you guys can see I'm learning

I taught I could of used a wall wart a bit of midufication and that would be it.. but I guess not

 

A "wall wart" would not be able to supply the power you'll need for your amplifier.

You need the 24v-0v-24v aka 48v center tapped aka dual 24v to be rated for at least 150VA. That's over 3.1A current. That transformer will be pretty bulky. It will make a good door stop. Don't drop it on your foot, or you will break something.

As I implied before, the 18v transformer can be a rather light duty model; it really doesn't have to put out a lot of current. However, it will either need to be a center-tapped 36v transformer, or have dual 18v outputs.

I really don't know where to buy electronic components in Canada. AudioGuru would know, as he lives up there, and obviously does a lot of work with audio components.

He may even know where you could find a single transformer that has suitable outputs. Those are getting quite rare though, as transistors and ICs have replaced tubes/valves in all but very expensive audiophile components.

 

That's probably one of the biggest store in Canada

http://www.e-sonic.com/acc/home.aspx

Where's AudioGuru?? Shoveling his driveway??

 

Well, here's a Hammond transformer that would be adequate for the 24v/48v portion, but it's rather pricey:
http://www.e-sonic.com/acc/products.aspx?partID=266N48&partIDExt=195&command=detail

Their parametric search engine is really not terribly helpful.

I don't know what Audioguru is up to; he visits other forums besides this one, and he may have company seeing it's the holidays.

 

Isn't it horrible???? That's the store we deal with at work and you really have to know what you are ordering, no pix and the specs are all over the page.

Here's 2 more that I go to often

http://www.sayal.com/

http://www.active123.com/store.cfm?&ckey=US&lang=eng

Besides that that's pretty much what we have in Toronto. I order quite a bit from digikey as well.

 

but it's rather pricey:
.

Darn, the amp cost me $85 with shipping. I should of done my research before I bought it!!!!

I know that store is a bit more pricey then the usual, bu like we say they know their s&*t mostly when you don't... like me

There's always ebay

 

Digikey has some transformers similar in rating to what I found at Mouser.

Have a look around.

 

1.The first stage of the amplifier using the vacuum tube doesn't have any voltage gain.
2. The Input Volumn Control used is 50K(A). That means the input impedance of the amplifier is not very high (50K parallel 499K).
I don't think the tube is required. As Audioguru said: the vacuum tube can only add more distortion.
So you can just neglect the vacuum tube circuit and feed the input signal directly to the IC. By doing so,The only power supply you need is a transformer rated at 130VA (more or less), with secondary 24V-0-24V(or 2 windings supplying 24Vac).
3.You need to add a suitable heat sink to the IC too.

 

Active 123 had little transformers. They closed their store that was near where I live.
Sayal sells surplus parts and I don't think they sell big transformers.
Electrosonic has a big warehouse and should stock most Hammond transformers.
But I buy most things online from Digikey or Newark.

I am still waiting for some snow. Today was cold but mostly sunny.

 

I've order from mouser as well in the past but befoer I make a purchase I'd like to know in details what's going on I'll be honnest I am not too sure how to wire that stuff

http://ca.mouser.com/ProductDetail/...=sGAEpiMZZMv4oUrzpPKU3A2NOXuypJmAngR2Fh1SFW8=

http://ca.mouser.com/ProductDetail/...EpiMZZMv4oUrzpPKU3O%2bui9ulA%2bFliTLs5r6hyK8=


I know some wires will go to voltage post on the board but what about how do I wire that to the AC outlet??

 

Active 123 had little transformers. They closed their store that was near where I live.
Sayal sells surplus parts and I don't think they sell big transformers.
Electrosonic has a big warehouse and should stock most Hammond transformers.
But I buy most things online from Digikey or Newark.

I am still waiting for some snow. Today was cold but mostly sunny.

What????? they closed their store????? The one on Gordon Baker?? I was there 2 weeks ago. I bought my whole shop there over the years.

So AudioG what do you suggest??? Where are you from anyways?

 

The Active 123 store that closed was in Mississauga for many years.
Sayal in Mississauga was beside them and took over the space (and maybe many of their parts) to enlarge their store.

 

Active123 has the Hammond 266M48; it's a 144VA 2x24v unit with both 117v and 236v primaries:
http://www.active123.com/eng/storeS...D-MFG&itemcategorylevel1=&itemcategorylevel2=

Hammond's catalog for dual secondary transformers:
http://www.hammondmfg.com/266.htm

 

So AudioG what do you suggest? Looks like that amp will be gaining a few pounds

 

Active123 has the Hammond 266M48; it's a 144VA 2x24v unit with both 117v and 236v primaries:
http://www.active123.com/eng/storeS...D-MFG&itemcategorylevel1=&itemcategorylevel2=

Hammond's catalog for dual secondary transformers:
http://www.hammondmfg.com/266.htm

I think the mouser stuff was a bit cheaper But I really need to know how to wire it up
Doing a search on ebay is pretty hard what are the key that I should put in?