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Compare RC and LC filter.

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RC filters 
LC filters
The RC filter is only useful for small load currents.
The LC filters are useful for heavy load currents.
More power dissipated in RC filter.
Less power dissipated in LC filter.
It has poor voltage regulation.
It has good voltage regulation.
It is cheaper.
It is costlier.
It has high ripple factor.
It has low ripple factor.
RC is fine for filtering low power signals.
LC is fine for filtering high power signals.

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