Many got their names from the dielectric. The most important group is the fixed capacitors. Common capacitors and their names Ĭapacitors are divided into two mechanical groups: Fixed capacitors with fixed capacitance values and variable capacitors with variable (trimmer) or adjustable (tunable) capacitance values. Pseudocapacitance can increase the capacitance value by as much as an order of magnitude over that of the double-layer by itself. The ratio of the storage resulting from each principle can vary greatly, depending on electrode design and electrolyte composition. Unlike batteries, in these reactions, the ions simply cling to the atomic structure of an electrode without making or breaking chemical bonds, and no or negligibly small chemical modifications are involved in charge/discharge.
Standard capacitors have a fixed value of capacitance, but adjustable capacitors are frequently used in tuned circuits. Larger capacitors are used for energy storage in such applications as strobe lights, as parts of some types of electric motors, or for power factor correction in AC power distribution systems. Small capacitors are used in electronic devices to couple signals between stages of amplifiers, as components of electric filters and tuned circuits, or as parts of power supply systems to smooth rectified current. in DRAMs or flash memory structures), this article is concentrated on the various styles of capacitors as discrete components. Although, in absolute figures, the most common capacitors are integrated capacitors (e.g. Capacitors are widely used as parts of electrical circuits in many common electrical devices.Ĭapacitors, together with resistors and inductors, belong to the group of " passive components" used in electronic equipment. They all contain at least two electrical conductors (called "plates") separated by an insulating layer (called the dielectric). Some different capacitors for electronic equipmentĬapacitors are manufactured in many forms, styles, lengths, girths, and from many materials.