<div dir="ltr">I've made these USBpowered Eurorack pcb kits. That convert the 5V output from USB and up-converts it to +/-12V. I usually just use a USB battery charger...but you can also use any USB power source. I've been able to push 250mA to the +/-12v for several hours. It's great to have a portable small system to tweak on the couch or on the go.<div><br></div><div><a href="http://c1t1zen.com/presta/">http://c1t1zen.com/presta/</a></div><div><br></div><div>It's based on the work of Tom Whitwell of Music Thing Modular.</div><div><br></div><div>Kylee</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Dec 16, 2016 at 10:55 AM, Barry Klein <span dir="ltr"><<a href="mailto:barryklein@cox.net" target="_blank">barryklein@cox.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>And I think some of these are VINTAGE – like from late 80’s!</div>
<div>They’ll pop also with high surge like hot plug to DC after fully
discharged.</div>
<div>Were used in WD disk drives by the millions. (old parts stock)</div>
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<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="ijfritz@comcast.net">ijfritz@comcast.net</a> </div>
<div><b>Sent:</b> Friday, December 16, 2016 5:40 AM</div>
<div><b>To:</b> <a title="synth-diy@synth-diy.org">synth-diy@synth-diy.org</a> ;
<a title="xyzzy@sysabend.org">xyzzy@sysabend.org</a> </div><span class="">
<div><b>Subject:</b> Re: [sdiy] [OT] Power supplies +5v, +/-12V for sale
cheap</div></span></div></div>
<div> </div></div>
<div style="FONT-SIZE:small;TEXT-DECORATION:none;FONT-FAMILY:"Calibri";FONT-WEIGHT:normal;COLOR:#000000;FONT-STYLE:normal;DISPLAY:inline"><font face="Helvetica"><span class="">Only if you connect them backwards (-: I've never ever had
a problem with them.<br><br>Ian<br><br><br><br>Sent from XFINITY Connect Mobile
App<br><br><br>------ Original Message ------<br><br>From: Tom Arnold<br>To:
<a href="mailto:synth-diy@synth-diy.org" target="_blank">synth-diy@synth-diy.org</a><br>Sent: December 16, 2016 at 6:01 AM<br>Subject: Re:
[sdiy] [OT] Power supplies +5v, +/-12V for sale cheap<br><br></span><div><div class="h5">On Wed, Dec 14,
2016 at 05:05:27PM -0800, Barry Klein wrote:<br>> I also have some spools of
tantalum capacitors for free - just pay shipping.<br><br>Aren't those just
firecrackers?<br><br>--
<br>------------------------------<wbr>------------------------------<wbr>-----<br>- Tom
Arnold - Free Synth DIY webspace
<a href="http://www.sdiy.org" target="_blank">http://www.sdiy.org</a> <br>- SynthGeek
- "...is it a virus, a drug, or a religion?"<br>-
K6AET -
Juanita Shrugs. "What's the difference?
<br>-------------------- -- Neal
Stephenson, Snow
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