Erica Synths EDU DIY Wavefolder Eurorack Module Kit - Manual (Page 17)

And here’s what the whole thing put together looks like. 13
Note that the bu ff er transistor will add a bit of a negative o ff set to the input sawtooth – so
once you’ve set this up, you’ll have to fiddle with the trimmer again to get the best results.
For the op-amp, we’ll be using a TL074 IC, which is four op-amps in a single chip.
Make
sure that you set it up exactly as shown here – if you reverse the power
connections, it will heat up and die!
To check on your triangle, connect your oscilloscope to the op amp’s output.
You can try this chapter’s circuit in a simulator. I’ve already set it up for you right here: https:// 13
tinyurl.com/2nwyf4fk – you can change all values by double clicking on components.
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