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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Mfos synth diy experimenter board
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Ghostchaser



Joined: Nov 11, 2015
Posts: 3
Location: Woodstock Ga

PostPosted: Wed Nov 11, 2015 3:43 pm    Post subject: Mfos synth diy experimenter board
Subject description: Power supply question
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Hey all,
I'm building the Mfos experimenter board and would like to install it in a blank panel on my Synthesizers.com modular. The synth.com power supply puts out +15v, -15v, and +5v. Would the circuit handle the voltages from the Synth.com power supply, or am I going to have to build a 12v bipolar supply?
Thanks
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wackelpeter



Joined: May 05, 2013
Posts: 453
Location: germany
Audio files: 10

PostPosted: Fri Nov 13, 2015 2:44 am    Post subject: Reply with quote  Mark this post and the followings unread

Maybe you can simply build a daughter board for your power supply that will regulate the +/-15V down to +/-12V.
Also you have to take care how much current your actual power supply can handle and how much you already draw from it and how much more current your MFOS module will draw from it.

If there's enough headroom you should be able to use your existing psu and simply use some 7812 and 7912 Regulators for modules that require +/-12V.

If i'm talking nonsense hopefully someone will correct me before i'm giving wrong advices.

I would measure first the current consumption and if it's ok than i would test it. if it doesn't work it's not too late to include another psu...

i don't know what are the exact rules on how much you should mangle your psu... but i would say you should not force it to work on it's limits as this would affect the output stability of the supply voltages i think.

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Ghostchaser



Joined: Nov 11, 2015
Posts: 3
Location: Woodstock Ga

PostPosted: Fri Nov 13, 2015 4:28 am    Post subject: Reply with quote  Mark this post and the followings unread

Well the way I see it, the power supply will handle a max of 60 modules on average. I only have about 28 modules in my modular right now. I don't think my current draw will be a problem. I thought of the daughter board thing and might just do that. Thanks for the reply.
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