[sdiy] MIDI phantom power...over 5 pin MIDI connector ?

[eidorian at aladan.net]

As I understand it, you get very little current (5mA) - just enough to 
drive a small microchip but not much else.  If you need more current 
than that then you'll need to use it sparingly (i.e. not draw on it all 
the time, so it can charge up a capacitor for when you do need it).  
Having said that, I once read somewhere that some (most?) MIDI outs can 
provide more than 5mA, but I'm not sure I'd rely on that.

Not really all that helpful sorry.  Hopefully someone with some actual 
practical experience in this area will respond :)

Cheers,
A.


On 2015-09-10 09:43, jpdesroc wrote:
> Does anybody have schematics of an easy way to send
> power using the 2 MIDI pins in a 5 pins cable ?
> I don't want to use any of the 3 remaining wires of the cable
> for universal use on ANY MIDI cables..
> I know this company uses that technology:
>
> http://www.midisolutions.com/prodmrg.htm
>
> but I can't find any circuit ideas that uses it..
> I know I'll need some kind of charge pump design to get something 
> like 5 volts
> out of the MIDI (idle or in use) signal.
>
> Any clues ?
>
> JP
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