#1

Thought I would throw this out there…

Does anyone know of a relatively compact 9V to +/-12V DC-DC module that can provide ~250-500mA (just as an example). Has anyone tried anything out (and found it to give a clean, stable output)?

The reason I ask it is would be a convenient way of powering a Eurorack compatible ‘pedal’ with a 9V DC supply (used in guitar pedals).

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#2

it’s not a module per say, but this thing might work?

#3

Cool thanks for the link!

I found some Modules (traco power I think) on mouser that appear to do the trick. I’ll post a link when I can find them again :+1:

#4

this just popped up in ModularGrid also:

#5

did you test any modules? I need a quick solution

#6

Would Tom Whitwell’s Stupid USB Power thingy - or @infovore’s remix - Simple Module Tester do the trick?

EDIT - the DC/DC module in Tom Whitwell’s version 2 is a XP-Power JCA0205D02 which takes 4.5V - 9V Input

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#7

I have one of these on my bench, but haven’t wired it up yet. It’s used in one of the USB to Eurorack power bus boards iirc.

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#8

I have one of those, it shuts down at ~150-200mA on the positive rail. Never really investigated what went wrong, looks like a few people use them without issue. May have been sloppy and put too much heat into it while soldering

#9

not exactly module, but there’s this, which uses the meanwell dc-dc converter mentioned above to give +/-416mA on both 12v rails

probably need to take note if using pedal power supply which are mostly center negative type wheras for the above power supply, i have only tried with a center positive supply

I have built the mmi usb to 12v power and adapted it to using 2.1mm dc barrel. It can be powered with mobile phone charger or portable power bank as well.

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#10

dead bug coming right up. thanks for the link!

#11

Unfortunately I’ve not had chance to try anything just yet.

I was looking for something that would fit into a Hammond 1590BB, and this is the one that I had my eye on (just over 100mA for both rails):

https://www.mouser.co.uk/ProductDetail/TRACO-Power/TEC-3-0922?qs=sGAEpiMZZMvGsmoEFRKS8Koqt8Pjkl39NGN1Wuu4gJOVBFTEL0BFig%3D%3D

image

#12

wow, that thing is definitely not tested. I was noodling around and should perhaps make that clearer on that page. so please don’t build it!

#13

Haha… “Maker Beware!”