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145% on China now. Anyone wanna guess what it’ll be tomorrow?

Thanks! Idk how I missed that one in my search. I recognize those JFET opamp stages as being derived from the BD-2 mostly. The buffers on each output make sense, especially for the second stage. I'm not too worried about it on the MX Drive ; I think it can drive the tone control just fine. I...

Ok so between this and the general questions forum, I think (I hope) I'm in the right place after browsing the threads here. This whole project came about because I got some of these Mazda AA120 diodes from Small Bear ages ago. These are not made by the car company but rather a semiconductor...

Ah I see now, I was trying to imagine how it would work with the lid closed but I see you leave it open and use a deep container for the IPA. Thanks for all the info!

Thanks! That makes me feel more confident about getting one for like $50. Do you seal the container you put the PCB in or is it more like a tray?

Got a link to the ultrasonic cleaner you have? I am curious about this approach for new builds. I usually use 99% IPA and a toothbrush over a normal paper towel. Soaks it right up.

Dude, I have two of those old Small Bear enclosures and I never thought to put the switch on the lower part. I like it! Nice work.

I have a Light Pedal on my bench for repair. I got it working and I have the SMD parts to finalize the repair but I have yet to do so. I will post pictures and a write up about it eventually but it is low on my long list of projects. It’s an awesome pedal, but I think it’s a little out of...

Haha that’s fair. My apologies. The *no experience* disclaimer was to cover my ass just in case ;)

Why Chuck sad?

*no first hand experience with this circuit* I think 1N4148 will sub just fine

I really like those labels!

What have you got for zener diodes? It’s there to protect the input of the JFET from voltage spikes (like static). It’s more commonly seen on MOSFETs as they’re more susceptible to static and what not. I’ve rarely seen it on JFETs. The default there is a 9.1v zener, a 12v would work there just...

Yes, the PCB’s are sized properly for solder lugs.

https://www.amazon.com/dp/B091281YKX/ref=cm_sw_r_cp_api_glt_fabc_DBB5K61RMZJ43KE1BF4J?psc=1 This is the exact one I bought. It’s useful and cheap but it has its quirks such as being iffy when testing FETs. https://forum.pedalpcb.com/threads/looking-for-a-transistor-tester.8779/page-3 It’s...

Here’s a quote from Chuck found in this thread: https://forum.pedalpcb.com/threads/the-bollocks-a-king-midas.3258/ This is pretty much what I’ve read elsewhere. ESR is often not expressed on datasheets, but instead is noted as Max Ripple Current. For high frequency switching stuff, the internal...

If you would like to sure! I’m still unsure of what the implications of ESR are in different situations.

No worries it’s out of focus anyways. I believe they are mostly “Arcotronics” as I bought most of them before 2019, except the ones in the photo were bought in 2020 and I think are “Faratronics” I see ones in their site now cited as Faratronics and JB as well, I don’t believe I have any of...

Greetings. I was working on a build last night and decided to measure my 470nF film box caps from Tayda before using them. I found they all had a pretty high ESR, around 6-8 ohms. So I went on a bit of a testing spree: 220nF caps from Tayda in the slimmer box measured 17-18 ohms! It’s worth...

This was a great read! Nice work. I want to get a DS-2 one day because John Fruciante… Good call replacing the electros, they last a good while in pedals compared to the ones in tube amps and such since they are often run well within spec, but you never know as the decades go by. The films and...