DIY project: A handy power supply PCB for small tube amps like preamps, buffers or microphones.

[rock soderstrom]

PCB in use:

 

[rock soderstrom]

I was asked for a gutshot. Here we go, I have nothing to hide

 

[kingcredie]

Hi Rock,

The printed circuit board in your products is a single-sided board, right?

 

[rock soderstrom]

Hi Rock,

The printed circuit board in your products is a single-sided board, right?

Yep, single-sided. I etch them myself at home.

 

[ruffrecords]

Love the artwork. I wish I was gifted that way.

Cheers

Ian

 

[Tubetec]

Nice re-use of the enclosure ,
I like something with that slightly used look , not beat up ,just marked from a lifetime of normal usage .

Crafty as well to use the voltage doubler off the standard 6.3v winding ,
As you said it offers up the possibillity of re-use of other mains transformers from vintage domestic tube gear.

Old tube reel to reel decks can often have a very high quality sheilded mains transformer to keep magnetic field away from the heads , they also tend to have an extra winding in the 10-20 volt range for dc powering of low level stage heaters , there a great candidate for re-use for any kind of preamp .

 

[rock soderstrom]

Love the artwork. I wish I was gifted that way.

Thanks! Anyone can do that, it's not a big deal. I simply download a few images I like from the internet and heat transfer them onto my front plate. I call it 'tattooing'...

Nice re-use of the enclosure ,
I like something with that slightly used look , not beat up ,just marked from a lifetime of normal usage .

I also really like this aesthetic. I enjoy going to flea markets (and scrapyards), and if I see something that catches my eye, I'll pick it up for a small price. The casing cost me 1€ along with a few other things. I knew immediately what I wanted to do with it. The voltmeter was a find from a scrapyard, if I remember correctly. I was thrilled when it turned out that it still works.

Old tube reel to reel decks can often have a very high quality sheilded mains transformer to keep magnetic field away from the heads , they also tend to have an extra winding in the 10-20 volt range for dc powering of low level stage heaters , there a great candidate for re-use for any kind of preamp .

That's true, you can find them quite often. I've cannibalised some that were at the end of their lifespan. A good resource for new projects. The feet on this unit are from a Grundig R2R tube tape recorder btw.

 

[alphasnk]

You're always the coolest, Rock!

Thank you for sharing your project which can help many to get started with tube musings