What is a ceramic disk capacitor?
The capacitor is an electronic device used in the circuits to block DC signals, still allowing to pass AC signals. To achieve this, the ceramic disk capacitor uses a number of alternating metal discs called plates and ceramic discs called dielectrics. They are cheap and universal and since the beginning of the age of 30, they have been widely used in different types of electronic devices. Capacitors are usually made of metals such as aluminum or tantalum; However, many different materials are used as a dielectric. Regardless of the material material, most of the operating characteristics of the capacitor are determined by the composition of its dielectrics. When the capacitor works, the electric current enters the capacitor, but cannot pass directly to the other plates because they are separated by insulating dielectric. This prevents the electric current directly through a capacitor that blocks any DC signal. However, the AC signal creates a polarized electromagnetic field around the board. ElectromaThe gnetic field then passes through dielectrics and triggers the AC signal on the other plates in the capacitor, which then faints the rest of the perimeter.
As the name suggests, the ceramic disk capacitor uses small ceramic disks as dielectrics. These discs have several advantages over dielectrics made of other materials such as plastics or oils. Ceramics is very cheap, easy to produce, can withstand relatively high temperatures and is electrostatically stable. As the result, the ceramic disc capacitors find use in electronic devices that produce a lot of heat, work on very high frequencies or both.
The key capacitor of the ceramic disk was the first such device created for use in practical electronic applications and devices. In their early days, these devices worked along with vacuum tubes. Later helped the transistor debutovat. They came alongside the shoulder with the most advanced components of field effects. From old tube radios, through TVs, satellites and state -of -the -art supercomputers, there was never time in the history of electronics, where a humble ceramic disk did not provide exceptional performance at a very modest price.