How to Make a Vacuum Tube: A Step-by-Step Guide for Electronics Enthusiasts
Making a vacuum tube involves creating a glass envelope, which is then sealed and evacuated to create a vacuum inside. Inside the envelope, electrodes are placed at opposite ends, and a metal grid is placed in between. Filaments or heaters are connected to the electrodes, and when they are heated, they emit electrons towards the grid. The grid can then control the flow of electrons, allowing the vacuum tube to function as an amplifier or switch.