Regulated PSU Quality PCB?

[CarlosT]

I kiddingly asked Peter Daniel from AudioSector if he would consider making a nice PCB or kit for a regulated PSU but is there one out there already?

You know...one that would accomodate 8 MUR860 diodes, a nice bank of 4 bigs caps + 1 little cap on each rail before the regulator and then a little tiny output cap + a bypass cap for the adjust leg...maybe based on some design for the LM338? Is it too much to ask?

 

[chipco3434]

Although it won't look as nice, that's an easy one for a perf board project. It's about the only thing I can really do from scratch.

 

[falcott]

Check out this:

http://taihu.bjtzh.gov.cn/~digi01/regulator.htm

Discussion here:

http://www.diyaudio.com/forums/showthread.php?s=&threadid=39816&perpage=10&pagenumber=1

I've got a pair of these boards, yet to build them up. They are very good quality. And they're tiny.

 

[Minion]

The PSU I use provides Unregulated DC for the Power amp stage But for the Preamp stage (were a regulated supply seems to have more impact of sound quality) it has a +/-15v regulated supply useing LM317/337 regulators.....

I Can post the design if you want it....It could probably be easilly modified by adding a couple more regulators for the Power amp stage but I never found a need for it.....


Cheers

 

[CarlosT]

Man...why one huge cap instead of a bank of smaller ones? Looks cool though.

How much were these? I hate clicking on Paypal just to find out

Is it a kit or just the PCB?

Minion if it's easy...yeah...bring it on!

 

[falcott]

Man...why one huge cap instead of a bank of smaller ones? Looks cool though.

How much were these? I hate clicking on Paypal just to find out

Is it a kit or just the PCB?

I think the object of the design was to get the whole thing really tiny. Digi made them the same size as his LM3886 amp boards. I believe that they are only available as boards, not a kit.

You will need a pair for each channel. I meant to say earlier that I have 4 boards. I can't remember what I paid for them. They weren't expensive.

But don't ask me, ask Digi!

 

[tobias_svensk]

maybe something like this then? Just stretch it out for 4 caps
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg1.jpg
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg4.jpg
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg6.jpg
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg7.jpg

 

[peranders]

Wrong URL or not uploaded the picture yet?

 

[tobias_svensk]

Damn you P-A
Im writing on my cellphone so im slow & with errors

 

[BWRX]

I had some made a while back for positive TO220 regulators.

http://www.diyaudio.com/forums/showthread.php?postid=867880#post867880

They don't include space for rectifier diodes or a larger bulk filter cap. I was thinking of having some more made since I use the few I have for testing and stuff but never got around to it.

 

[Minion]

Minion if it's easy...yeah...bring it on!

Hi,Yes this is an easy PSU and I have bulit several of these for many different projects as the designs can be easilly changed for different projects ,this one is actially a modified version of the PSU used for the "Green Mic Preamp" but with 2x 10,000uF caps added and with the +48v Phantom power removed and a couple extra Holes so you can get access to the +/-26v Unregulated.....

It is a really easy PCB to etch so if you wanted to try this PSU but didn"t want to etch it your self I could etch a couple for you for a small Price.....


Cheers

 

[falcott]

maybe something like this then? Just stretch it out for 4 caps
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg1.jpg
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg4.jpg
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg6.jpg
http://www.ettnet.se/~tobias/diy/lm3886/psu_reg7.jpg

Very nice! If you have a spare board looking for a new home, then you now know where to offer it!

 

[imperfectcircle]

You may want to check out Welbourne Labs they make a bunch of regulated power supply kits. They are a bit pricey, but they give schematics if you want build your own.