Recent content by drew.spriggs

Seems to be a situation of they look cool and are available in large quantities for pretty cheap.

Honestly, it's not super important unless you're drawing a high proportion of the total device output - the difference in a few of the models I just compared was 1% voltage variation from 0-100% current draw for regulated vs 10% for unregulated (and the same from min to max input voltage). You...

If you've got voltage to spare (which you do), you can't beat a single Schottky diode for simplicity and minimal drop; 1N5819s cost nothing, drop minimal voltage and will withstand 40v continuous reversed all day. IMO, reliant on a RC filter these days on the power rail isn't that useful for...

Op-amps get biased to roughly half the supply rail - so you want the voltage divider to have two equal(ish) resistors for R1/R2 so the middle of these will be ~4.5v.

I use them exclusively for the workshops I run for beginners. A buck and a minute to solder is massively cheaper/easier than trying to get new solderers to cut/strip/tin/solder multiple cables :ROFLMAO:

https://au.mouser.com/ProductDetail/TE-Connectivity/FSN-22A-6?qs=FFbrrKMnJvzKmHD1yRFm1w%3D%3D Flat stranded, Nomex or Teflon ribbon, specifically designed for movement. Been using them for years with zero issues

The easiest way is (IMO) make things modular as well as bullet proof - separate the sections of the pedal that will see the most abose (jacks, switch, pot) into daughterboards and connect them to everything else with JST-XH's or ribbon cables. If something breaks, swap them over in under a...

If you have 3D models attached to your PCB, export it as a .step file and import to your CAD program of choice. From there it's trivial to create a drill plan. If you don't have 3D models attached, then your best bet is exporting it as a vector image into your vector software of choice and...

That is exactly what I am trying to avoid...

No vref as everything else is transistors/CMOS. I can probably fit a single transistor stage with the tonestack, but can't fit a buffer + gain recovery stage. Even if I put an op-amp on the other side, I still need half a dozen extra components to use it - and I don't have the room for that.

G'day. Been noodling through this design and made it up to the tonestack portion. The preceeding stage has a reasonably high output impedance, and I'm running out of board space. It's a CMOS Muff-ish thing, so I've got 3 preceeding gain stages. A solution I found was using an active BMP...

Well, it will still sound exactly the same - you'll just claim it doesn't :ROFLMAO:

22 is a standard value and will sound exactly the same

....so there's zero quantifiable difference between the two brands, but your non-blind hearing test proved there was? Come on bro. At least pretend it's anything but imaginary :LOL:

'Audio' grade is marketing nonsense to sell to schlubs, and most of the technical reasons cited are more of a justification searching for a reason type of deal. I can guarantee that NOBODY can hear a difference by changing a single cap with equivalent specifications when it's just one small part...