Hi, I found this in my photos, not sure if it helps! It's from an EP3, I only have photos from the top for the other boards.
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In case anyone is interested - I ended up using the V1 67#1 schematic, but with the PNP FS37000, and a small voltage inverter circuit on veroboard. Transistor...
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Thanks all for the input, I've just installed a dedicated ground connection, paint scraped off!Last edited by clarisso11; 03-02-2024, 09:37 AM.
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Just finished putting this together, earth securely connected to the chassis. Works great, no hum or other noise issues!
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Thanks Mark, these are all good points, and something to think about!
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Thanks, I didn't know about the design errors in V1, what are they? I wanted to go for a copy of the V1 Triangle circuit....
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I see, thanks! I'm also getting two of the NPN FS36999, so I'm thinking I could test the hFE on those, compare them to the PNP types, and use the NPN circuit...
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Triangle Big Muff circuit - swap NPN to PNP transistors?
Hi everyone,
Some background:
I'm starting a new project, retrofitting a V1 Triangle big muff circuit into an old EHX enclosure,...
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Thanks, that confirms my worries! Surprising to see all those clones keeping the 2-wire power supply. Maybe to not have to deal with the loop noise in the...
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Not sure I completely understand; is the original wiring with 2-core mains cable a safe option? Or should I change it to something safer?...
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I see, so all the examples I showed in the photos of my post are potentially very dangerous, with the 2-core mains cable?
I'm now thinking I...
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That's an interesting idea, thanks!
On the chassis I'm using, the inside is covered with non-conductive paint. If all live wire connections are...
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Uni-Vibe - Grounding mains cable to chassis?
Hi everyone,
I've been working on a Uni-Vibe clone, and noticed that both the original pedal and other people's clones use a 2-prong AC mains...
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The pedal is alive again! Somehow the SAD1024 survived the whole ordeal. Replaced all the opamps just in case, and all is working great - can confirm the...
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I just found the damaged part! It was the tantalum C22 after all: no signs of damage and tested with low ESR, but continuity (0ohm) across the pins! Should...
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Yes all the IC markings were pretty much gone on this board, I’m not sure why.. The original D3 had signs of overheating, I replaced it with 1N4001,...
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Thanks both, that explains it! Working on original bypass switching, but the true bypass took out D1 with the effect off, melting Q1 (and probably other ...
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I think there's a chance that the schematic is not 100% accurate, but it seems to match the components and tracks on my board closely. In any case, it seems...
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