[sdiy] Variable power supply

[Roman Sowa]

My first power supply was made even without PCB, just by soldering 
components together, put inside old radio case. It was good enough to 
design and build DIY polysynth...

Later I made uP-controlled dual supply for university project, that one 
works still very good after 20 years and doesn't even need recalibration.

Couple of years ago I bought Tek supply (PWS4000 series), only because I 
needed 0.1mA readout resolution, and I dream about Rohde&Shwarz tripple 
supply for $1k that according to specs does all I need from little 
benchtop supply.

What I'm saying, you can go with 10EUR DIY supply at first and make a 
lot of great work with it, then replace with something more fancy when 
you feel Gear Acquisition Syndrome.

Try thi - in Polish only, but I bet you can find something similar in 
any electronic DIY store:
https://sklep.avt.pl/avt1572.html

Some folks are very happy with Rigol supplies, they really look good in 
the spect, and cost a lot less than anything that range.

Roman

W dniu 2016-03-05 o 22:01, Joel B pisze:
> 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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