Ripple (specifically ripple voltage) in electronics is the residual periodic variation of the DC voltage within a power supply which has been derived from an alternating current (AC) source. This ripple is due to incomplete suppression of the alternating waveform after rectification. Ripple voltage originates as the output of a rectifier. A non-ideal DC voltage waveform can be viewed as a composite of a constant with an alternating (AC) voltage—the ripple voltage—overlaid. The ripple component is often small in magnitude relative to the. A capacitor input filter (in which the first component is a shunt capacitor) and choke input filter (which has a series as the first component) can both reduce ripple, but have opposing effects on voltage and current, and the choice between them depends. Ripple in the context of the frequency domain refers to the periodic variation in with frequency of a filter or some other. Not all filters exhibit ripple, some have increasing insertion loss with frequency such as the Most power supplies are now switched mode designs. The filtering requirements for such power supplies are much easier to meet owing to the high frequency of the ripple waveform. The ripple frequency in switch-mode power supplies is not related to the line frequency, but. Ripple current is a periodic non-sinusoidal waveform derived from an AC power source characterized by high amplitude narrow bandwidth pulses. The pulses coincide with peak or near peak amplitude of an accompanying sinusoidal voltage waveform. •, a non-linear device that is a principal source of ripple•, the instrument of DC power generation, whose output contains a large ripple component•, the natural response time domain analog of frequency domain ripple.
