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bleeder resistance voltage regulation

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p11

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how does bleeder resistance help in voltage regulation ?please explain.
 

A full wave rectified bridge delivers 1.4 x the average voltage to the caps when there is no load.

When you have some current limiting series resistors and a 10% preload the unregulated voltage variation can reduce 10 to 20% from 40%

or X% where the X% ripple voltage equals the X% drop in average voltage , so it never reaches the root(2) peak voltage
 

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