|GCSE Capacitor Coupling Decoupling Explosion More Uses Parallel RC Timing Series >Smoothing<|
The smoothing capacitor acts like a bucket, filled quickly and drained slowly. This averages the DC Voltage to a level close to the Peak AC Voltage.
Without the capacitor, the DC ouptut would be very lumpy - see diagram below.
If the DC is not smooth enough, use a bigger capacitor or add an electronic voltage regulator circuit. Any lack of smoothness is called the Ripple Voltage.
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