[rodentmacbeastie]

Yah, but smashing in Canada is a very big no no. I do keep it in a copper foil sleeve I made. This is also why my DIY Box'O'Goodies HTPC is going to be copper shielded on every surface... Shielding in both directions is good for my mental health.

 

[Coreyk78]

I received my Aikido board and H-PS-1 kit today and I am very impressed by the quality of these boards.

I have a question regarding the power supply, the parts I was sent in the kit are sized for 12VAC input or 24vac input to get a regulated 25.2 vdc output. Would it be ok to use a dual 24vac secondaries transformer and only use 1 of the secondaries for now so that I could reuse the transformer later if I decide to step up to 48v? Or would it be better to get a dual 12vac transformer and wire the secondaries in series for 24vac? I'm looking at Antek toroids specifically. It looks like the 12v transformer in series would have more current headroom given the same VA rating.

edit- and then I forgot Antek doesn't offer many sizes in 24v, which pretty much limits it to the dual 12v in series. The PS-1 schematic recommends only 24vac @ 1A so I don't know if I would be safe using a 25v transformer.

 

[digger945]

When you ordered your H-PS-1 did you have a pull down menu on the glassware-yahoo website to select between 5V, 6.3V, 12.6V, 25.2V?
Did you pick 25.2V?

 

[Coreyk78]

Quote:

Originally Posted by digger945 /img/forum/go_quote.gif When you ordered your H-PS-1 did you have a pull down menu on the glassware-yahoo website to select between 5V, 6.3V, 12.6V, 25.2V? Did you pick 25.2V?

Yeah, I ordered the 25.2v kit.

I scanned the schematic that came with it.

 

[digger945]

It would apprear you can go witha 24V xfmr and have a full wave rectifier, or use a 12V xfmr and have a fullwave voltage doubler. The method you use will determine the orientation of C5 and C6.
I guess it just depends on what transformer you are gonna use, or buy.
Thanks for the schematic btw.

Pertaining to your post #317, I don't think you would have to wire dual 12V secondaries in series if you were using the 12V voltage doubler, but you could do that to obtain 24V(for the 24V full wave bridge rectifier) provided you are using the correct primaries.
Do you already have a xfmr like that now?
I need to order some xfmr's myself.

 

[Coreyk78]

I haven't ordered a xformer yet, but I'm planning to order it soon, since I need two 25v 300VA xformers for my dual mono gainclone project.

 

[digger945]

I just wanted to say that 6GM8's heaters' draw .33A each(I am sure you are prolly already aware of this

).

Do you have a certain place where you order your transformers. I am in the market for some 6.3V. Maybe one 4A or two 2A.

 

[Coreyk78]

Quote:

Originally Posted by digger945 /img/forum/go_quote.gif I just wanted to say that 6GM8's heaters' draw .33A each(I am sure you are prolly already aware of this ). Do you have a certain place where you order your transformers. I am in the market for some 6.3V. Maybe one 4A or two 2A.

I'm actually going to be using 6N23P tubes (Russian 6DJ8 clones) using the resistor values given by JB for using those tubes at 24V.

I haven't used them before, but I have read good things about Antek xformers and thats where I'm going to be ordering from.

AnTek Inc.

 

[digger945]

Ahh, the 6N23. You will be the first I know of. The data for the 6N23 shows .365A heater current.
I look forward to knowing what you think of how they sound in the Aikido circuit.

I like the looks of the AnTek torroids, are they reasonably priced?

 

[Coreyk78]

Quote:

Originally Posted by digger945 /img/forum/go_quote.gif Ahh, the 6N23. You will be the first I know of. The data for the 6N23 shows .365A heater current. I look forward to knowing what you think of how they sound in the Aikido circuit. I like the looks of the AnTek torroids, are they reasonably priced?

Yeah the Antek are pretty inexpensive, they have a price list on the site, you just order directly from them.

 

[BoilermakerFan]

You can use the AnTek 22V secondary torroids.

 

[digger945]

^I use a 22V on mine now.

 

[nano_machine]

Has anyone tried building this with this with 6DJ8/6922's at 24V? 6GM8's are getting so difficult to find.

 

[rodentmacbeastie]

I am still awating my replacement H-PS-1 board from Tubecad. I am wondering if one of these PS kits is enough to power two boards? I should get another H-PS-1 board right? Any suggestions for a transformer?

 

[rodentmacbeastie]

Would you be able to feed an IRF610 with a LM317 in the buffer? I have some IRF610 from my D1 I/V stage left over znd wondered if they would sound better?