: The glass tube is filled with a low-pressure gas, usually neon. It contains a wire-mesh anode and multiple stacked cathodes shaped like numbers.
: When a high voltage (typically 170V–180V DC ) is applied, the gas surrounding the selected cathode ionizes and glows with a distinct orange-red light.
: Participants learn to handle the unique requirements of Nixie tubes, such as high-voltage power supplies (boost converters) and microcontrollers like Arduino to drive the logic.
Outside of electronics, "Nixie" appears in various niche areas: