Tags » JFET

Theremin in Detail

recently posted a video about building a theremin — you know, the instrument that makes those strange whistles when you move your hands around it. The circuit is pretty simple (and… 148 more words

Musical Hacks

Pocket Class A DIY Headphone Amp by XRK971

I crossed paths with XRK971 a few months ago on the diyaudio.com forums as we worked concurrently on Class A single-ended headphone designs. Although we did not collaborate and our parts choices differed, our overall topologies share a strong resemblance.

2,091 more words

Electret microphone hysteresis

In attempting to determine the I-vs-V characteristics of an electret microphone, I stumbled across a phenomenon that I’m still having difficulty explaining. ¬†What I was looking for was a plot like this one: 1,036 more words

Circuits Course

The (wee) Fettle Boost (4) - The finished prototype

I finally got round to writing Jan 2018 because I fell so far behind with the website, but I did all this in March 2017, so I’ve backdated this post. 232 more words

DIY Electronics