Capacitor is an indispensable electronic component in the field of electronics and electric power. It has a wide range of applications. The following are some common capacitor applications:

1. Power Supplies and Filters: Capacitors are widely used in power supplies and filter circuits to provide an AC bypass, store energy, and smooth out power supply output voltages.

2. DC/DC Converters: Capacitors are used in DC/DC converters to store and release energy, and filter out AC noise which is created by transformer action.

3. Amplifiers: Capacitors are used in amplifier circuits to filter out AC noise, to provide coupling between components, and to reduce DC drift.

4. RF Circuits: Capacitors are widely used in RF (radio frequency) circuits to tune circuits or networks to specific frequencies, and filter out unwanted signals from desired ones.

5. Motor and Induction Controllers: Capacitors are used in motor and induction controllers to reduce torque pulsations, filter out AC noise, and smooth out the input voltage for AC motors.

6. Computers and Electronics: Capacitors are used in computer motherboards and circuit boards to reduce the supply voltage ripple and filter out electro-static noise.

7. Robotics: Capacitors are used in robotic circuits to reduce noise affecting the robotic operation, to provide timing or data storage, or to increase the speed of motion in the robotic system.