Recent content by andy-h-h

Looking at the tagboard version - I'm seeing a regular looking MKI / Zonk type circuit with nothing out of the ordinary. The input switch just adds a 0.0027nf cap in series with the 10n cap, to reduce the value down to the Zonk range. It's the same topology, with some different value...

Hmm... The image on the bottom right. I think can see a normal looking MKI / Zonk style input. Cap to Q1 base, 1m to ground, 8k2 on emitter, cap from emitter to Q2 base etc, 2k2 on collector fo Q2. I'm sure some resistor values have been tweaked a little elsewhere, but I'm not sure I'm...

Thank you. True - some are definitely brighter than others. There's a bit going on with impedances and inconsistent transistors. Just need a mountain of transistors, a breadboard and a bit of time on your hands :) Measuring to sort them to some extent does help, but it only takes you so far.

Ha - it’s funny when researching something and I end up back at my own blog. 😄 Glad someone else found it useful.

Interesting thread - thanks for the mention @darwin999. I hadn't seen any other component tables before, which is why I put mine together (based on the awesome work of Kit Rae, the world foremost Big Muff aficionado). I stuck to EHX for my chart, I may expand it with a few more options at...

Hey there. I'm also lazy and use LTspice to check impedance. In pretty much every case that I can remember, adding a pulldown resistor to a circuit that doesn't have one reduces the input impedance. It's adding parallel resistance, so it has to come down. The question is, does it actually...

It was obtained by a lot of digging around of old posts and looking at photos. Glad you like it - the blog started as a reference for me (and still is), I perhaps got a little carried away with the scale of it. 😁 I happen to have a couple of MKIs on the bench at the moment myself. Always...

This method avoids having to reverse layouts to place cuts. Mark from the top with a felt tip pen - the ink absorbs into the board, and you can see it from the other side. Simple... it also provides a good reference for component placement, once you start populating the board. I make a...

Maybe try it and see what you think. I just did some as an experiment, and it does sound different (I'm the guy from vero-p2p). In some cases smoother, with less harsh clipping. For the record, I'm not one of those people who thinks discrete is best. I'll quite happily use ICs cause...

I just saw this thread - yes that would be me. It does work pretty well, and I used a 4.7k as that was at the end of the range where the transistor started to cut out and not work. I've also used a 25k pot instead of a 50k for a more useful range (to my taste anyway). I'm looking forward to...

It keeps me amused, and always happy to share.

Thanks MDC - I'm sure I've probably missed a few, feel free to let me know if something is missing.