[sdiy] Variable power supply

[Tom Wiltshire]

Hey, cool. That's Rick's own test power supply. I did the PCB layout, like many of the Frequency Central boards. As you say, cheap as chips to put together and good for testing a module on the bench without any risk of blowing up anything important/expensive.

I'm currently working on a new version of an "improved" board with 317 variable regulators on it and multiple footprints for various connectors so you can build it up for MOTM, Dotcom, Blacet, or Euro and tweak it for either+/-12V or +/-15V. It'll appear in due course - I haven't finished the layout, and Rick Holt hasn't tested it - but it's a work in progress. The new version is intended more as an actual rack supply (e.g. multiple outputs), rather than a single module test supply, but it'd work just as well in that role.

Tom


On 5 Mar 2016, at 21:25, Sean Dynan <seandynan at gmail.com> wrote:

> I use a Frequency Central power supply:  http://www.frequencycentral.co.uk/?page_id=894
> 
> Cheap as chips to build and housed in a plastic project box. I get +/-12V and +5V. It has a Eurorack ribbon cable hanging out of it because I have only built Euro modules to date, but you could use anything.
> 
> On 5 March 2016 at 21:01, Joel B <onephatcat at earthlink.net> wrote:
> Really, I'm just getting started building musical experiments and I don't know what I need exactly. At present I need +12 volt, there seem to be a lot of +5 circuits though out there so +5, +12, +15. Just saw people in YouTube vids dialing up what they need and assumed I need a box like that...
> 
> Joel
> 
> Sent from my iPhone
> 
> > On Mar 5, 2016, at 11:45 AM, Phillip Harbison <alvitar at xavax.com> wrote:
> >
> > Joel B wrote:
> >> What would folks here recommend for a relatively inexpensive
> >> variable dc power supply for the synth electronics experimenter?
> >
> > Do you really need it to be variable? I would think +/-15VDC or
> > +/-12VDC would be sufficient 95% of the time. I bought a power
> > transformer from Digikey, an IEC power inlet with switch and
> > fuse, a Bud box, and this +/-15VDC regulator board on Amazon.
> >
> > www.amazon.com/gp/product/B00XBGKN3Y
> >
> > If you need it to be adjustable a pair of these might do.
> >
> > http://www.amazon.com/DROK-Converter-Step-down-Transformer-Stabilizer/dp/B00JUFJ1GA/ref=pd_sim_23_5
> >
> > ...or these which have built-in LED displays.
> >
> > www.amazon.com/Adjustable-Regulator-1-25-37V-Converter-Voltmeter/dp/B00OZGVL4O/ref=pd_sim_263_4
> >
> > IEC power inlet module
> > www.amazon.com/gp/product/B00F4MFMXE
> >
> > Power Transformer
> > https://www.digikey.com/product-detail/en/triad-magnetics/VPS36-1200/237-1284-ND/666170
> >
> > Bud Box (7"x5"x3")
> > www.amazon.com/gp/product/B005T7T0Y6
> >
> > --
> > Phil Harbison
> >
> >
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> 
> -- 
> Sean
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