Capacitor

Definition

A capacitor is a device that introduces capacitance into an electric circuit, allowing it to store and release electrical energy.

Purpose

Capacitors are used in various electrical and electronic applications to store energy, filter signals, stabilize voltage and power flow, and perform other functions such as timing and tuning circuits.

Examples of Use

1. Power Supply Filtering: Smoothing out fluctuations in power supply output.
2. Signal Processing: Blocking DC while allowing AC signals to pass in electronic circuits.
3. Energy Storage: Providing short-term energy storage in devices like cameras and flash units.

Related Terms

• Resistor: A component that resists the flow of electrical current.
• Inductor: A component that stores energy in a magnetic field when electrical current flows through it.
• Capacitance: The ability of a system to store an electric charge.

Notes

Capacitors come in various types, including ceramic, electrolytic, and tantalum, each suited for different applications based on their properties and performance characteristics.