What is a cold cathode?

Cold cathode is a cathode that is not heated. Although it may seem obvious, this difference is very important for the internal function of the cathode. These cathodes, although not specifically heated as hot cathodes, still have the potential to warm up very much when used. Cold cathode is used in several forms of gas -based lighting systems such as neon features. While cold cathode lights are widely used in many modern systems, their use of electricity is often higher than alternative systems.

The cathode is part of the diode where electricity flows during energy. Most cathodes are hot cathodes or fibers. These cathodes maintain a much higher power density by heating the cathode. This improves the flow of electrons and allows the cathode to maintain a stronger energy flow. These types of cathodes are used for everything from bulbs to cathode beam tube (CRT), otherwise known as TV (TV) tube.Rge its energy flow. In this case, a significant tension is promoted through the cathode and generates ElekTrick field. The cathode will then use this electric field to maintain its energy flow. This method of generating and maintaining a charge is less efficient than a hot cathode, but also generates less heat.

While the cold cathode is not heated, it does not mean that it is not hot. As the current moves through the cathode, a small amount of energy is transferred to heat. This heat will improve the use of the cathode performance, but it will also be warmer. While some cold cathode devices are always cool to the touch, others can become as hot as standard cathode devices.

One of the primary uses of cold cathodes is in gas lighting, such as in neon characters. The voltage required to enthusiasm gases is usually lower than the voltage required for other lightring forms. This allows the cold cathode to function at a lower voltage than the hot cathode and generates less excess heat.

Cold Cathody JSOU also in the primary way to create a rear light for the screen screen of liquid crystals (LCD). In this case, the cold cathode is used primarily for lower heat production and the use of stable voltage. This allows most LCD TVs to work without an active cooling system.

The problem with cold cathodes is the tension needed to maintain their functional. Hot cathodes can work very easily in variable voltage due to thermal induction created by their heat. Cold cathodes cannot do this and drops to tension cause the cathode to lose performance. This means that the cold system must maintain a higher voltage and use more electricity than similar hot systems.