Modular Power supply

OW · Joined: Nov 03, 2009 Posts: 122 Location: London

Hi,

I'm just about ready to start ordering parts for a modular I am building. It's only going to be a 22U modular.

The power supply I require is +/- 15 V. I don't want to use a wall wart, as I want to mount a transformer inside the case. I'm also looking to build a power distribution board.

Can anyone point me in the direction of one?

Thanks!

bubzy · Posted: Mon May 14, 2012 8:37 am Post subject:

i built this, works rather well.

http://www.nutsvolts.com/uploads/magazine_downloads/11/January%201998%20Thomas%20Henry%20-%20Power%20Supplies%20for%20Electronic%20Music.pdf

OW · Joined: Nov 03, 2009 Posts: 122 Location: London

Thank you for the reply!

I was looking for something that used multipole connectors via a distribution board so I could connect it to all my modules.

marvkaye · Joined: Mar 14, 2011 Posts: 225 Location: Fla

I like Ray Wilson's (MFOS) LM317/337 adjustable supply, very robust, plenty of power. Hooking its outputs up to a distro board made from stripboard and MTA connectors would be pretty simple. FWIW

<marv>

fluxmonkey · Joined: Jun 24, 2005 Posts: 708 Location: cleve

i'm an avid DIYer, but i swear by used PowerOne open frame linear PSs... ebay or th local surplus outlet, i usually can pick 'em up for around $25 or so, which is cheaper than i could build and better quality.

ken stone has distribution boards, CGS73 for euro CGS74 for .156" a la MOTM. http://www.cgs.synth.net/pcb/index.html

Uncle Krunkus · Posted: Tue May 15, 2012 3:23 am Post subject:

There's a thread here,
http://electro-music.com/forum/viewtopic.php?highlight=psu&t=29075
which documents my build of a +-15V precision PSU. It's in a rack box, but you could probably put the same thing together on the inside wall of your modular.

Osal · Joined: Aug 16, 2011 Posts: 147 Location: Here

Hello,
I recommend my ps2.
It is much better than the ones based in standard regulators Lm317 and 78XX.
It can output +15V/-15V from a 30VCT transformer instead of a 36VCT transformer because it uses the low dropout regulator MIC2941. This translates in a much less power dissipation, thus more small heat sink or/and lower temperature operation, increasing durability and reliability.
Furthermore, the PCB is designed to be attached to a rear panel with a more neat result.

http://electronic-sea.net/ps2.html

About distribution board:

http://electronic-sea.net/power_distribution_board.html

And this can be useful to you:

http://electro-music.com/forum/topic-51694.html

marvkaye · Joined: Mar 14, 2011 Posts: 225 Location: Fla

Osal · Joined: Aug 16, 2011 Posts: 147 Location: Here

wmonk · Posted: Tue May 15, 2012 7:51 am Post subject:

I built the Oakley PSU. Uses a uA723 regulator for the positive and a precision opamp for the negative rail and works great. Smile

Oh, and the current sensing is a nice feature too. Very Happy

marvkaye · Joined: Mar 14, 2011 Posts: 225 Location: Fla

Osal · Joined: Aug 16, 2011 Posts: 147 Location: Here

seaweedfactory · Joined: Apr 12, 2006 Posts: 61 Location: Earth

LektroiD · Posted: Wed May 16, 2012 11:47 pm Post subject:

Not wanting to mess too much with mains electricity, I ripped my PSU out of an old Crumar synth. It has ±5 / 12 & 15V outputs. Which is perfect as the synth I'm making uses a variety of different boards with different power requirements. I power my 4 oscillators separately (to avoid any interference from other modules), via a MFOS 12V wall wart supply. And unless you have a very strong PSU, I'd recommend powering oscillators separately to anyone who wants added stability.

LektroiD · Posted: Thu May 17, 2012 3:46 am Post subject:

DES · Posted: Sun May 20, 2012 11:08 am Post subject: