I’ve got a question that you’d be more knowledgeable in answering than I would. I built this same pedal months ago and it works great. My question is in reference to the 47uF electrolytic mounted to the left of the empty charge pump slot. I wasn’t sure which space it was supposed to go in. I’m not a pro at reading schematics, still learning. From what I thought I was seeing, I decided to mount it in the lower slot. I see that yours is in the top slot. Did I do it wrong or does it not matter which place you put it? The pedal works great but I’d rather have it mounted where it belongs. I’m hoping you could educate meLast non-PedalPCB I will post, but I have been wanting to build this for a year or so.
I love the bucket brigade chips.
You have it installed correctly. Reference page 3 of the V2 VFE Switching document. Also, those spots are not interchangeable.
Check the schematic. Your build has C5 populated instead of C6.
Thanks for clearing that up for me. I was pretty baffled. I remember studying that build doc for a couple days straight before I dove in. I’m not real good reading the schems yet but from what I can tell C6 comes off of the #5 pin of the empty charge pump. I did reverse the polarity. C5 looks like it comes off or pins 2 and 4 and that is omitted. I guess I’m making some progress.
Yeah, you’ve got it. Compare the schematic to the trace picture and you can see how it translates. Without traces, you have to use the continuity setting on your DMM. Definitely a worthwhile skill to develop.
That’s exactly what I did. I just remember sitting on it for a couple days because I didn’t want to do it wrong. I hate desoldering, but it sounds like it works somehow either way.
That capacitor doesn’t affect the voltage: it’s a decoupling capacitor meant to shunt noise from the power supply and isolate it from the circuit. The 8k2 resistor is there to provide the bias voltage (i.e., VB in the choral reef build doc). Both are important parts of the bias voltage circuit block, though.
