Paul In The Lab

 I couldn't find much info on the electronics in this one so I had to trace it from various internal pictures around the internet. in so...

quite a simple project, during the Covid-19 coronavirus outbreak, one of the pieces of advice we've been given is to wash our hands for...

I went to the shop yesterday hoping to buy 2 Amptweaker Defizzerators for a recording session but of course; they only had 1, so I bought 1...

I used to make this pedal a lot and sell them on eBay so I thought I'd revisit it as it seems that I sold the one I made for myself too...

this is the 3rd guitar effect in the "wizard" collection. As anyone who has followed this site for long enough will know, I alwa...

I came across this interesting little thing so I thought I would make a clone of it. it's a maxon treble booster. they also did one ...

someone asked me to do this, so I did. it's a useful little circuit to power those little electret microphones.

I thought this would be a good project to keep around to see if my digital multimeter has drifted out of calibration. I power it from a n...

I built this as a rough frequency meter to make sure a bunch of oscillators were oscillating in the right ballpark frequency. it uses the ...

This was just a quick little circuit I built to test all the salvaged CD/DVD lasers I have. essentially it is a adjustable constant current...

this is a quick project I made for another project I'm working on but I'm sure people will have uses for this so here you go. it...

When I was young (about 9 or 10) - this is one of the first "big" projects I successfully completed and still actually use to thi...

I've been a bit busy recently so I thought I'd scan this interesting looking project in from a magazine from the 70's ...

This is the Blue Wizard - part of my "wizard" design series (Green Wizard HERE ) - this is a very harmonic rich overdrive/distort...

This is something I've wanted to re-visit for a while, I was never happy with my original layout - you couldn't use the proper op-a...

There are lots of circuits on the net for 3 band EQs but I wanted something a bit more powerful than the usual 20+dB/20-dB things on offer ...

This is quite a brutal high gain overdrive by Joe Davisson based on another pedal called the massacre. it's a very mod friendly circuit...

Well - it's been a while, I'm in the late stages of moving house and I also dislocated my knee quite badly - I had to shift it back...

I got some 3 pin dual LEDs and I thought a good use for them is as little 9v battery status monitors for my guitar pedals. so I came up wit...

I got the schematic of this from http://www.runoffgroove.com/ruby.html - I just wanted to make a really quick test amplifier and the Ruby ...