How a stungun creates 20kV from a 9V battery
Disaster of a product - so many things wrong
Fluorescent ballast tests and teardowns - with schematics
Exploring a mass produced solar charge controller
Random stuff, a teardown and a little bit of smoke
Exploring a "retro" LED floodlight with a well designed driver
Inside a Positive Input Ventilation (PIV) unit
Fixing a faulty electric shower PCB (no microcontroller)
USB glitter lamp with REAL thermal convection
Inside a cheap burner WiFi router/repeater
Inside a non-contact infrared light switch
Magnetically actuated lights - one with bad software
Better USB chargeable keychain flashlight
Inside a very common style of remote control button - with schematic
Randomly overpowered scammy "sterilising" lights
Exploring an Anker power bank
High power industrial vibrator (for concrete)
Rambly and slightly botched LED driver repair
Lidl vs AliExpress LED candle teardown