[sdiy] Battery power for eurorack

[Mike Bryant]

Well I've never met a 5V battery, and 12V batteries are often 13.x volts so you're going to need some sort of voltage regulator.  And to avoid them discharging unequally you'd be far better off with a single battery and switch-mode boost converters to get the outputs you need.  

I think anybody having problems with 'dirty' power supplies is just buying cheap crap.  Decent ones are very clean nowadays, and most come with a suggested external circuit if you really need even less noise.  Conversely batteries actually produce constant noise at all frequencies due to their method of generating power - put some headphones via a capacitor across one to see how bad some are.


-----Original Message-----
From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of cheater cheater via Synth-diy
Sent: 28 December 2021 19:47
To: Didier Leplae
Cc: synth-diy mailing list
Subject: Re: [sdiy] Battery power for eurorack

battery power is not cleaner than a regulated psu, especially a linearly regulated one. you will still want a linear regulator, as well as a filtering stage.

On Wed, Dec 22, 2021 at 9:44 PM Didier Leplae via Synth-diy <synth-diy at synth-diy.org> 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.
>
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org

_______________________________________________
Synth-diy mailing list
Synth-diy at synth-diy.org
http://synth-diy.org/mailman/listinfo/synth-diy
Selling or trading? Use marketplace at synth-diy.org