A capacitor is a passive two-terminal electrical component that can store electrical energy in an electrical field. The capacitor is composed of two close conductors (plates) separated by a dielectric material (insulator). If the plates are connected to power, they will accumulate an electric charge. One plate accumulates a positive charge, while another plate accumulates a negative charge.
Electrolytic capacitors, Mica capacitors, Paper capacitors, Film capacitors, Non-Polarized capacitors, and Ceramic capacitors are examples of capacitors.
-The quantity of electrical energy a capacitor can store within its electrical field is known as nominal capacitance.
- Most capacitors have an operating temperature range of -30°C to +125°C. Extreme temperatures (above +85°C) can damage electrolytic capacitors, causing the electrolyte liquid to evaporate. The electrolyte liquid can also solidify at low temperatures.
- Tolerance is the fluctuation in a capacitor's stated capacitance, usually expressed as plus(+) or minus(-) in percentage (%). It can be anything between -20 and +80 per cent. The most typical is 5% and 10%, but some plastic capacitors are rated as low as 1%.
- The maximum voltage (DC or AC) that may be continually applied to a capacitor without causing it to fail is known as the working voltage. A capacitor's printed voltage value is the DC operating voltage that is valid over a temperature range.
-Negative and positive terminals are present on polarised capacitors, and they should never be connected incorrectly.
AVX, EPCOS, KEMET, Murata, Nichicon, Panasonic, CapXon, GEMBIRD, RUBYCON, SAMWHA, and many others are only a few of the well-known capacitor manufacturers.