Peak ripple factor refers to the peak value of the AC component in a rectified waveform, relative to the DC component. Synonyms for peak ripple factor include AC ripple, peak-to-peak ripple, AC components, and residual ripple. These terms are often used in the context of electrical engineering, particularly in the design and analysis of power supplies and filters. The goal in reducing peak ripple factor is to improve the quality of the DC output voltage, and thereby increase the efficiency and reliability of the system being powered. Various techniques and components can be employed to mitigate the effects of AC ripple in electrical circuits.