Neonindicatoren

Neonindicatoren, also known as neon indicators or neon lamps used as indicators, are simple gas-discharge devices that glow when a sufficient voltage is applied. They typically consist of a small glass envelope filled with a neon gas mixture at low pressure and two electrodes. When the voltage across the electrodes exceeds the ignition voltage of the neon gas, the gas ionizes and emits a characteristic reddish-orange light.

These indicators have been widely used for decades in electronic equipment as power-on or status indicators due to their low cost, long lifespan, and minimal power consumption. They are robust and can withstand significant overvoltages without being damaged, making them suitable for various applications where simple visual feedback is required. Their characteristic glow is easily recognizable and provides a clear indication of operational status.

While more modern LED indicators offer a wider range of colors and lower operating voltages, neon indicators remain in use in certain legacy equipment and applications where their unique properties are advantageous. They are particularly found in older appliances, industrial control panels, and some laboratory instruments. The distinct glow and reliability of neon indicators have cemented their place in the history of electronic design.