DC out wiring

[Vic Winters]

When the board for my blend pedal comes in and I wire the box, I was thinking of adding a DC out to power my other pedals via daisy chain. Simple as running a jumper from the +9 and -9 of the DC in to the DC out or more complicated?

[niftydog]

-9? Is it dual supply? Or do you just mean ground?

It doesn't have to be any more complicated than that, but you should be mindful of where the current has to flow. For instance, if all the current going out the daisy chain has to pass through a PCB track that's only 0.25mm wide, then that could be a bit hairy.

[bongomania]

Does the circuit you're building actually use +9 and -9, or is it +9 and ground? The typical Boss-type arrangement is +9 and ground. If your circuit is an 18V circuit that goes from +9 to -9, then you'd take the jumpers from the +9 and ground connection points, assuming the rest of your pedals use "normal" 9V.

Be sure the power supply has a good amperage rating, sufficient to power all the pedals in the daisy chain.

[bongomania]

Dammit nifty, you beat me by like half a second. :shakes nerd fist:

[niftydog]

jinks!

[SpankyPants]

NERD FIGHT!!!

[Vic Winters]

Sorry, meant ground. I have a 1 Spot, so I should be good power supply wise.

[niftydog]

Oh, hey, c'mon, who says I'm a nerd?!?!









<glances to the right of computer screen - sees oscilloscope, calculator and a set of vernier calipers>

Um, well, ok...

[Vic Winters]

Something like this?

[niftydog]

Well, that would work as there are other ground points in the other pedals, so the current flowing the the ground wires would be less than that in the 9V wires.

But I'd perhaps just wire both DC sockets and the circuit board in parallel - so put the ground wire straight between the two sockets just like the 9V wire.

[Vic Winters]

Like that?

[niftydog]

Yup. No biggie really, but might save you a bit of wire!

[Vic Winters]

Gracias nifty.