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New EOL announcements from Central Semiconductor, by way of Mouser: Central SemiconductorPN3565 PBFREE610-PN3565N/AEnd of Life Central Semiconductor2N5172 PBFREE610-2N5172N/AEnd of Life Central Semiconductor2N3392 PBFREE610-2N3392N/AEnd of Life Central Semiconductor2N3416...

For those of you building the Concrete Jungle (Free the Tone IF-1D Iron Forest Distortion), Nightfire Electronics has the 2SC3198 for $0.25/ea, although they don't specify the suffix (O, Y, G or L, per Hfe gain sort). https://vakits.com/2sc3198-npn-transistor I haven't seen the 2SC3198 available...

Why not, I'm in a laughing mode after reading about Mouser BOMs... And no comment on "Robbies"???

It could be like the Oscars, and have several categories... We could call the awards the Robbies, with categories such as: Most original use of a $5 diode in a 1590LB enclosure Best YATS in a supporting role Best original enclosure design for a shit build Best foreign language PCB Best editing...

Hey, no wonder he's pro-BJ ... they provide immense help with erecting his project! C'est magnifique!

After looking at Bob's donation record in view of his total lack of awareness regarding the orange guy's tariff plans, I think it's time to introduce him to Tablebeast*. Then our new neurodivergent member can ask Bob why the f### he doesn't publish Mouser BoMs for all *his* pedals. * Check out...

Digikey has BAT43 for $0.14/ea or 10/$0.98 https://www.digikey.com/en/products/detail/stmicroelectronics/BAT43/603517 And Mouser also carries them.

The Silica is the Dallas Arbiter Si NPN Fuzz Face, you can find its schematic here: https://fuzzcentral.ssguitar.com/fuzzface.php EDIT: Looks like I'm wrong, it's not the same schematic - sincerely oops...

@giovanni - So I think we agree, although your terminology was probably better. Share the SPICE sim, if you do it. I'm curious why they clip it twice in a row. Those 2 opamp stages have nominally unity gain at low frequencies, and fall off at higher frequencies 1/2πRC ~ 7kHz. Right now I'm...

@giovanni - What I meant by the voltage divider (probably poor choice of words) was there are 2 paths, thru the 100k to the opamps or thru the LEDs to ground. The signal will flow thru the path of least resistance. For audible frequencies, (1) low voltage signals pass onto the opamp, while...

Here's my take. Look at it as a voltage divider, including the 100K to the opamps vs the dynamic voltage-dependent resistance of the LEDs to ground. As noted above, the 10µF is so large that at normal guitar frequencies it just blocks DC. The LEDs are very high resistance until you reach...

Holy shit! Any of that kind of flux that is left behind (including any fumes which land elsewhere on the circuit) is quite corrosive, I would *not* recommend using this on electronics. That stuff can really chew up your pots down the road. For electronics I am a big fan of Superior No. 30...

That quote is adapted from Shakespeare's MacBeth

You mean 1.9 thumbs up! How does it sound on 'Let it Bleed'? Seriously, it looks great! Whatever you live through makes you stronger!

Get the style that's like made out of 90° angle steel, like these: https://www.amazon.com/Gator-Rackworks-Heavy-Steel-GRW-RACKRAIL-04U/dp/B0727PNMTF/ They're much easier to mount and also stronger.

@drgonzo1969 - One option is to just buy rack screw rails, and mount them on a wood frame - if you're trying to save $$. E.g., like these: https://www.fullcompass.com/prod/524292-grundorf-41-016p-16ru-rack-rails-pair I'm not saying these are the best ones to buy, just what popped up when I...

Hysterical! But shouldn't the Fuzz knob's label be upgraded to 'Hair' or maybe even 'Pubes'???

@Robert - How about Virgin Preamp, Virgin Vamp, or even Virgin Pre-vamp?

@Stickman393 - So did you re-measure them after your vacuum treatment? Did any change? Experimental data always wins! If nothing changed much, I suspect they are still hermetically sealed. When something is chemi-sorbed you generally need high vacuum** + heat to get any out (for that...

I'm not saying that the experiment can't work, rather that the analysis needs some refinement. Let's assume that somehow the hermetic seals on the devices are somehow compromised, otherwise all is for naught. Then yes, germanium oxide is water soluble. However, for absorbed water to impact...