What is the dielectric constant?
Dielectric constant is the ratio between the absolute permittivity of the material and the absolute permittivity of the vacuum. The technical definition of the "dielectric constant" or "relative permittivity" is complicated and is still discussed between electrical engineering. This is because the permittivity of the material depends on the frequency of the applied voltage. The term “static dielectric constant” is used to describe this ratio when direct or zero frequency voltage is applied.
The capacitors are a device that stores electric charges. They have a number of uses in electronics because of their unique properties. They are used as filters in the supply sources to remove the fluctuations in the output voltage, as the timing constant in the oscillator circuits and to block the direct current (DC) voltage (DC) when passing the AC (AC) voltage in the amplifier.
The capacitor has two plates or ribbons of the conductive material separately insulator. When the direct current applied them through the capacitor and accumulates between the boards. Make withE has prevented loss of voltage through the gap between the boards, the insulator is placed between the plates. This insulator is known as a dielectric.
The term "constant" is misleading when reference to dielectric or permittivity. As the frequency applied, the dielectric constant changes. The term generally used for the dielectric value depending on frequency is the "relative dielectric constant".
As the frequency increases, the relative dielectric constant decreases. As a result, the capacitors are designed to work in a given frequency range. One dielectric material may be suitable for use with lower frequencies, but may not be able to function properly when exposed to high -frequency voltage. Capacitors in high -frequency circuits need insulators that have a much higher dielectricconstimate.
some dielectric insulators in SKUThe dotty contributes to the formation of an electric field in the capacitor. They do this by helping to concentrate and align the electric field. This characteristic, together with the insulating capacity of the material, determines the dielectric constant or the relative permittivity of the material.