2 (or more) FXs on the same PCB

Started by arma61, May 27, 2008, 07:35:45 AM

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arma61

HI

how do you power up 2 or more fx on the same board, will the 2 or more resistor then be in parallel so their values need to be recalculate.  I mean look at this picture



these are Inductorless Wha and One Knob Fuzz (both Colorsound) on the same  schem. that I would like to have on the same pcb,  in this case are R4 and R19 in parallel ?, will this affect the way they'll work.

thanks for suggestions.
Armando

"it's a matter of objectives. If you don't know where you want to go, any direction is about as good as any other." R.G. Keen

GREEN FUZ

Unfortunately, when I click on the link, I can only see about half of the schematic. I can`t think of any reason why you couldn`t power both circuits from one power supply. Particularly as the two circuits have been integrated.

arma61

yes, I'm showing only part of the schem. as my question is about powering them whatever they are. If I understand well (after some reading here and there), and according to Mr. Ohm  :) in this case the 2 res. are in parallel so I get a decrease in current (this should not matter that much) but still I have 9V to both the FXs. isn't it ?

thx
"it's a matter of objectives. If you don't know where you want to go, any direction is about as good as any other." R.G. Keen

Barcode80

no, those resitors are not in parallel. i see no connection on the other side, only at the supply. what you are doing is 100% correct from what i can tell.

Ssmit

It's almost as if you're powering both with a daisy-chain, like a OneSpot or Power-all. As long as both circuits require the same voltage and polarity, there should be no issue (as long as your power supply can delivered the required amperage).

arma61

thx to everybody, I think I mess it up with voltage and amperage, thinking now to my pedalboard daisy-chain cable with 6 jacks I realize it that's the same! shame on me!!

"it's a matter of objectives. If you don't know where you want to go, any direction is about as good as any other." R.G. Keen