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I experimented with this yesterday night, and unleashed some magic smoke, but it was due to my breadboarding errors. To me it looks like a 1N5817 schottky diode + 100Ω and a 10V zener diode (i used 1N4740 i think) would do a decent job att protecting the charge pump IC from from 18V input and...

First of all, @PedalBuilder, many thanks for your inspirating write up of your exploration of this circuit! I have built a handful Harmonic Percolator-alikes with different variations in the past, but never heard anything close to the low octave effect in the Latent Lemon Hurts pedal demo...

Saw a video of the Pace tweezers, really good. That's a whole different ballpark than some cheap chinese product. Re: 63/37; Some stuff gets pretty easy to remove when you flood them with leaded solder. Anyway, Mr SolderFix's channel on youtube has a lot of desoldering tricks that work, but he...

I use two soldering irons at once, it's a bit like using hot tweezers This short video shows the benefits of this, linking the video doesn't work, but it can be seen on youtube: This one too, I'm sure there are cases where the tweezers are much better than two individual irons

Fastest setting sounds rather fast, if the Behringer UV300 reacts the same, but it would be fun to experiment and see.

"intended for application as the switching elements in pulse high-speed devices of nanoseconds" Do they clip nice?

Yes! MP20B in the picture

This seller on AliExpress: https://www.aliexpress.com/item/1005004484042580.html?spm=a2g0o.order_detail.order_detail_item.2.4e7af19cINQs3p I have an older one too that is good but it doesn't measure JFET and has a monochrome screen. I don't know at which Vds that Idss is measured at, it's not...

To measure Idss I use a cheap chinese T7 component tester, this is my setup: It works reliably, but i need press down the transistor against the copper tape to create contact. I use that rubber thingie in the upper right of the picture for that. I've thought about replacing the plate with a...

Thanks to your picture I was able to spot real easily something that was wrong with my build, had a 3.3k resistor instead of a 330k and it made the signal very quiet. :) Also, nice build! Zappa is great!