luvdunhill

Thanks! It's odd, I cannot edit it from my phone despite having the app installed. I will update it later, need to check my stocks first

Yeah, I can't say I actually used a "library". Still doable.

Nice! That's my favorite uController, just small and handy.

It's just an optoisolated relay.

Could you also offer the "S" versions of the 2CP-601 TKD pots, which have a detenting ring added?

Well, as you can tell color matching is hard - as is photographing color differences. Trying to choose between the four swatches here for some grills and having a hard time because the wood looks different in various lighting.. I am leaning towards the far left (towards the window). None really match anyways, so could do black. Oh also, a bunch of these. Pretty amateur but they should look nice enough. I have a mounting scheme I am hatching.

Ha! I want a MSO - only uses I have for it aren't exactly ethical though

Well, dealt with this tiny piece of copper for the last few days.... you can imagine what might have occurred.

Side view - two power JFETs per side

So, the white portions here are the four heatsinks with the rectifier diodes on them, in the above picture.

I thought that was its input impedance!

Smoke test passed and the new board fits!

It's funny, Nelson Pass has several products that do exactly that - use LM317 as a programmable current source for just a LED.

The 10uF has a startup transient up to around Vout. Probably okay in reality but settles down to Vout-10. The 47uF behave well, and zener and reference voltages should be fine there. I am using 16V on both 47uF and output rail on the rest. You can use much smaller than the 10uF called for and be fine, so don't be too concerned about that value.

The vertical work great with 2mm thick boards. The R/A ones just barely fit. I probably would add a bit of adhesive to make it extra secure.

I can do the math for you, which part?

Why not just use a thermal switch on AC mains? Check out the Cantherm product line at Digikey.

How many years have you been building and selling Audio projects?

Three discrete opamps?

They are a detented pot.

I think it would be cool to actually remove the amplifier circuit from the board and make it modular - plug-in boards for the amplifier section and maybe even the PSU. Would there be interest in something like this down the road?

pcbway supports plated slots.

Nah, those are just small-signal tubes - nothing to see here.