Which device is commonly used to smooth out the ripples present in rectified AC?

A filter is the device used to smooth out the ripples present in rectified alternating current (AC). When AC is rectified, it is converted into direct current (DC), but this process often results in a waveform that still contains fluctuations or ripples. The primary function of a filter is to remove these ripples and produce a smoother DC output.

Filters can be made using capacitors, inductors, or a combination of both, which help to stabilize the voltage and minimize the fluctuations. By allowing only the desired frequency components to pass while blocking the unwanted high-frequency noise, filters significantly enhance the quality of the DC signal, making it more suitable for powering electronic devices.

Understanding the role of filters in electrical circuits is crucial, especially in applications where a stable and consistent voltage is needed, such as in power supplies for various electronic devices.