Author Topic: Protoype Rig  (Read 438 times)

deadbeat

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Protoype Rig
« on: June 03, 2018, 04:11:22 AM »
I'm just getting into building my own pedals and figured I'd follow advice and build a prototype rig first. I'm following the "Making a prototype rig" tutorial and I think I've have most things figured out but I'm a bit confused about the wringing on page 16. Specifically the DC input appears to have reversed +9V and ground, is there a reason for this, is it a mistake or am I misunderstanding something?

Also I think I've got this one figured out but I've populated my Road Rage board and checked the outputs and they're not quite what I expected with 9V power supply. +15V reads at +15V but +9 reads at about +8.6V and +18V at around +17V. I guess this makes sense for +9V at least since the forward voltage on the diode in between is supposed to be 0.45V but I just want to be sure nothing's wrong.

m-Kresol

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Re: Protoype Rig
« Reply #1 on: June 03, 2018, 11:46:50 AM »
your voltages on the road rage are fine. As you said, you have to consider the diode's forward voltage and most supplies are not straight 9V.

about the wiring: it is not clear on the pic and it looks as if the red wire is going to the - pole of the roadrage. However, I'm quite sure it's just the picture angle! Connect the + from your voltage input to the + pad of the roadrage and - pad to GND.
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deadbeat

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Re: Protoype Rig
« Reply #2 on: June 06, 2018, 03:40:59 AM »
Thanks!