[sdiy] Battery power for eurorack

[Chromatest J. Pantsmaker]

I clicked on that link and saw the price!  What kind of battery is this?????
Then I changed the domain to .com
https://www.amazon.com/gp/product/B00ME3ZH7C

Quincas, what do you use to convert that battery to your module voltages?

On Thu, Dec 30, 2021 at 9:21 PM Quincas Moreira via Synth-diy <
synth-diy at synth-diy.org> wrote:

> I use this battery on any of my cases with great results! Of course my
> cases no longer use linear supplies, those require bipolar power and waste
> tons of current. DCDC converters for the win!
>
> https://www.amazon.com.mx/gp/product/B00ME3ZH7C/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
>
>
> On Thu, Dec 30, 2021 at 9:07 PM cheater cheater via Synth-diy <
> synth-diy at synth-diy.org> wrote:
>
>> If you want really very clean power, use a full-sine UPS to power a
>> toroid based power supply.
>>
>> On Fri, Dec 31, 2021 at 2:42 AM Didier Leplae via Synth-diy
>> <synth-diy at synth-diy.org> wrote:
>> >
>> > Thanks. I think these last two responses put this idea to rest for me,
>> as my main objective was cleaner power.
>> >
>> > On Dec 22, 2021, at 10:54 PM, Chromatest J. Pantsmaker <
>> chromatest at azburners.org> wrote:
>> >
>> > 
>> > I've seen people create DC-DC supplies taking power from 5V battery
>> banks (for charging your phone, etc.) and running entire live rigs from
>> that.
>> >
>> > I think having a single easily swappable battery would be better than
>> having one for each voltage.  You can then possibly just plug your DC-DC
>> supply into a large amperage 5V wall-wart.
>> >
>> > On Wed, Dec 22, 2021 at 2:38 PM Oren Leavitt via Synth-diy <
>> synth-diy at synth-diy.org> wrote:
>> >>
>> >> I've seen people use batteries to power small modular synths.
>> >>
>> >> Several years ago I've ran a small synth with 10 low current analog
>> >> modules plus an analog keyboard interface directly from two 12 volt
>> >> DeWalt cordless drill battery packs one each for the V+ and V- rails.
>> >> After playing on it for a few hours the V+ battery was at about 80%
>> >> charge and the V- battery was still at full charge. This was an NiMH
>> >> battery pack. I forget what the mAH rating was..
>> >>
>> >> - Oren
>> >>
>> >> On 12/22/21 2:41 PM, Didier Leplae via Synth-diy wrote:
>> >> > I’m curious about the idea of using batteries for eurorack power. I
>> am not an electrical engineer, so correct me if I’m wrong in thinking that
>> battery power could potentially be very clean compared with the cheap power
>> supplies many of us use.
>> >> > Plus, of course the portability would be another great benefit.
>> >> >
>> >> > Given recent advances in rechargeable battery technology, I wonder
>> if it could be practical and not terribly expensive.
>> >> >
>> >> >   I’m assuming you might need two or even three separate batteries
>> to get the +12 , -12 and +5 volt supplies.
>> >> >
>> >> > Perhaps someone has done this that I’m not aware of.
>> >> >
>> >> >
>> >> >
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>
>
> --
> [image: QMA]
>
> Quincas Moreira
> Director | QMA
> mobile:  5534988825
> site:  quincasmoreira.com
> email:  quincas at gmail.com
>
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