Salvage the microwave oven transformer (MOT) by discharging the lethal capacitor, unwinding the high-voltage secondary coil, and rewinding thick wire (e.g., 16mm²) for 3-5 turns to create a powerful ...

When building a new project, common wisdom suggests to avoid “reinventing the wheel”, or doing something simple from scratch that’s easily available already. However, if you can build a high-voltage ...

Anyone who’s done a bit of metalworking will know how quickly your stockpile will pick up a coating of rust with even just a bit of humidity. While welding requires only a bit of wire brushing at the ...

So you have an old tube-type transmitter as a backup. It ran perfectly when you last turned it on two years ago to substitute for your then-ailing solid-state main transmitter. Now you need it again.