Side-glow fibre optic is still terrible
I've never really been impressed by side-glow fibre optic material. It's a specific type of fibre optic that is lossy,…
Brotherly love solar repair with ralfy
My brother Ralfy brought over more of his solar lights for repair. This time the fault was caused by "unreasonable…
Rgb dimmer teardown and schematic no microcontroller
This must be the first time I've ever referred to the humble 555 as a microcontroller. To be fair, it…
Philips streetlight ledgine fault and repair
This is an unusual one. It's the very hefty LED module out of a streetlight, that has failed prematurely. The…
Exploring a high voltage power supply
From the same range as another unit I looked at recently, this one has an open PCB power supply with…
Redistilling posh laphroaig whisky
An experiment conducted for my brother Ralfy to do an analysis on in one of his own videos. I don't…
Vintage rcd/gfci teardown with story weird sensing system
This old Wylex RCD /GFCI is the simplest I have ever seen. The sensing core is especially unusual. It's worth…
Inside a puremate ioniser it’s an ozone generator
The circuitry in this unit is strange. It almost appears to be for diagnostic purposes, or maybe to add an…
New led lamp twist reverse engineered from a picture
Just when you thought they couldn't make an LED lamp simpler than the common linear regulator type, they come out…
Chizhevsky ion generator psu full build
The original concept of air ionisers is attributed to a Russian scientist called Alexander Chizhevsky. I thought I'd honour him…