While working on high voltage power supplies – several hundred volts – I often found myself needing to discharge capacitors which had retained thier high voltage after power had been […]
Shed
A Really Good Notch Filter
When you think notch filter you usually think twin T: In this R1 = R2 and C2 = C3, C1 is 2 * C2 and R3 is R1 / 2. […]
Shed Lighting
When I first built the shed the lighting was provided by work lights on cables hung from hooks in the ceiling. It wasn’t very good. As I mentioned in the […]
Shed – my biggest hack
A couple of years back I decided that I needed a bigger workspace. At the time I was in a room 2.4 x 1.8 metres. I started by looking at […]