[sdiy] [OT] Power supplies +5v, +/-12V for sale cheap

[Kylee Kennedy]

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.

http://c1t1zen.com/presta/

It's based on the work of Tom Whitwell of Music Thing Modular.

Kylee


On Fri, Dec 16, 2016 at 10:55 AM, Barry Klein <barryklein at cox.net> wrote:

> And I think some of these are VINTAGE – like from late 80’s!
> They’ll pop also with high surge like hot plug to DC after fully
> discharged.
> Were used in WD disk drives by the millions. (old parts stock)
>
> *From:* ijfritz at comcast.net
> *Sent:* Friday, December 16, 2016 5:40 AM
> *To:* synth-diy at synth-diy.org ; xyzzy at sysabend.org
> *Subject:* Re: [sdiy] [OT] Power supplies +5v, +/-12V for sale cheap
>
> Only if you connect them backwards (-:  I've never ever had a problem with
> them.
>
> Ian
>
>
>
> Sent from XFINITY Connect Mobile App
>
>
> ------ Original Message ------
>
> From: Tom Arnold
> To: synth-diy at synth-diy.org
> Sent: December 16, 2016 at 6:01 AM
> Subject: Re: [sdiy] [OT] Power supplies +5v, +/-12V for sale cheap
>
> On Wed, Dec 14, 2016 at 05:05:27PM -0800, Barry Klein wrote:
> > I also have some spools of tantalum capacitors for free - just pay
> shipping.
>
> Aren't those just firecrackers?
>
> --
> -----------------------------------------------------------------
> - Tom Arnold       -  Free Synth DIY webspace http://www.sdiy.org
> - SynthGeek        -  "...is it a virus, a drug, or a religion?"
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