Kylmäkatodivalonlähteitä

Kylmäkatodivalaisin, often translated as cold cathode lighting, refers to a type of gas-discharge lamp that produces light without the need for a heated filament. Instead, it relies on a high voltage to ionize a gas, typically a noble gas like neon or argon, or a mixture of gases. This ionization causes the gas to emit photons, producing light. The term "cold cathode" signifies that the electrodes within the lamp do not need to be heated to a high temperature to initiate the discharge, distinguishing it from hot cathode fluorescent lamps.

These lamps are characterized by their ability to start quickly and their relatively long lifespan. They are also known for their ability to operate at low temperatures, which can be advantageous in certain applications. The color of the light emitted by a kylmäkatodivalaisin can vary depending on the type of gas used and the presence of phosphors coating the inside of the tube. Common applications include backlighting for LCD screens, decorative lighting, and signage. Due to their efficiency and specific light characteristics, they have found a niche in various industrial and consumer products.