Dear all,
I plugged an usb hub like this https://www.amazon.it/gp/product/B06X8Z86VP/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 to power arturia beatstep pro with the power supply of my doepfer A-100 diy psu. https://www.doepfer.de/a100_DIY_kits.htm#A-100%20DIY%20Kit1
With arturia keystep37 seems to work but with beatstep pro the other modules doesn't work well.
I connect +12V and -12V correctly to A100 psu
https://storage.googleapis.com/modulargrid.net/easymde/185440_d081e7eec60e97f210c019a899702f5e_1714581078.png
but probably the beatstep pro drain too much power. If I use tubbutec usb bridge A in my other rack with doepfer A100-psu3 it works, obviously with 2A instead of 1.2A, I have more resource.
I have 1A free for main rack with psu3
and for the other rack with psu diy I have only 0.4 A free
Do you have any suggestions? Is possible to use Klavis No Drain to recover extra +12V from unused 5V (but if I remember well it converts -12V to 5V so in this situation is useless)?
A voltage converter would be needed to use 5V instead of 12V (like tubbutec does) but A100-diy psu doesn't have 5v.
"Nothing created and nothing destroyed" I thermodynamics rule but maybe I'm missing something...
Thanks
FB
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Got it.