What is a ceramic capacitor?
The capacitor, also called storage cell, secondary cell or capacitor, is a passive electronic component that is able to store an electric charge. It is also a filter blocking direct current (DC) and allowing to pass alternating current (AC). The capacitor consists of two conductive surfaces called the electrode, separated by an insulator called a dielectric. Unlike some capacitors, the ceramic capacitor is not polarized, which means that both electrodes are not positive and negatively charged; And uses metal and ceramic layers as dielectrics. Storage capacity is small and is measured in units called Farads (F). Most capacitors are so small that their capacity is measured in microfarad (10 to negative sixth strength), nanopharad (ten on the negative ninth energy) or Picopharad (ten for the negative twelfth power) units. The new super capacitors were a design that actually holds enough hub to be measured in full Farad's unit.
first ceramic designThe capacitor was at the age of 30, when it was used as part of the radio receivers and other vacuum tubular devices. Capacitors are now an important part of many electronic applications, including cars, computers, entertainment and power supply. They are also useful in maintaining voltage levels in electrical lines, improving the efficiency of the electrical system and reducing energy loss.
The original design of the ceramic capacitor was in the shape of a disk and with the exception of monolithic ceramic capacitors, which is still a predominant design. Ceramic capacitors are used as dielectric materials such as barym of titanic acid. They are not designed in the coil, like some other capacitors, so they can be used in high -frequency applications and in circuits that bypass high -frequency signals on the gkolo.
Monolithic ceramic capacitor consists of tEneky dielectric layers intertwined with unfolded metal film electrodes. Once the wires are connected, the unit is pushed into a monolithic or solid and uniform shape. Small size and high capacity of monolithic capacitors has helped to allow miniaturization, digitization and high frequency in the electronic device.
Multilayer ceramic capacitor uses two non -polarized electrodes separated by multiple alternating layers of metal and ceramics as dielectrics. They are found in high -frequency converters and in filters when switching power sources and DC to DC Converters. Computers, data processors, telecommunications, industrial controls and equipment also use multilayer ceramic capacitors.
ceramic capacitors are classified as type I, type II or type III. The type I ceramic capacitor generally has a dielectric made of a mixture of metal and titanates oxides. We have high insulation resistance and loss of lower frequency and maintain stable chapAcita, even if the voltage changes. They are used in resonant circuits, filters and timing elements.
type II capacitors have dielectrics made of zirkans and titanates such as barium, calcium and strontium. They have somewhat higher frequency losses and less insulation resistance than type I capacitors, but can still maintain a high level of capacity. They are popular for use in binding, blocking and filtering. One of the disadvantages of type II capacitors is that they can lose capacity with age. Type III ceramic capacitors are general use capacitors that are adequate in applications that do not require high insulation resistance and stability of capacity.