What are the two types of capacitors?

Capacitors are divided into two mechanical groups: Fixed-capacitance devices with a constant capacitance and variable capacitors. Variable capacitors are made as trimmers, that are typically adjusted only during circuit calibration, and as a device tunable during operation of the electronic instrument. The most common group is the fixed capacitors.

What is a paper capacitor?

In filtering devices in various power supplies. An electrolytic capacitor is used in switching power supplies. In input and output signal smoothing. Paper capacitors are defined as capacitors using paper as the dielectric medium between the plates of the capacitor. These are fixed capacitors and have a capacitance value of 1nF to 1uF.

What is a Class 2 ceramic capacitor?

Due to the high dielectric constant of these materials, the Class 2 ceramic capacitors offer a higher capacitance per unit volume but have lower accuracy and stability than Class 1 capacitors. They are used for bypass and coupling applications where the absolute value of capacitance is not critical.

What is a variable capacitor?

Variable capacitors are made as trimmers, that are typically adjusted only during circuit calibration, and as a device tunable during operation of the electronic instrument. The most common group is the fixed capacitors. Many are named based on the type of dielectric.

What is a ceramic capacitor?

Ceramic capacitors are well-suited for high frequencies and high current pulse loads. Because the thickness of the ceramic dielectric layer can be easily controlled and produced by the desired application voltage, ceramic capacitors are available with rated voltages up to the 30 kV range.

What are the different types of paper capacitors?

Paper capacitors are generally of two types which are : Paper sheet capacitor – Such capacitors have a sheet of paper in between two sheets of aluminium. It is covered with wax to protect the paper from the external environment. Metalized Paper Capacitor – Such capacitors have paper coated with a thin layer of zinc or aluminium.