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Chapter 15: Problem 2
A filter circuit provides an output of \(28 \mathrm{~V}\) unloaded and \(25 \mathrm{~V}\) under full-load operation. Calculate the percentage voltage regulation.
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A simple capacitor filter has an input of \(40 \mathrm{~V}\) dc. If this voltage is fed through an \(R C\) filter section \((R=50 \Omega, C=40 \mu \mathrm{F})\), what is the load current for a load resistance of \(500 \Omega\) ?
Calculate the size of the filter capacitor needed to obtain a filtered voltage having \(15 \%\) ripple at a load of \(150 \mathrm{~mA}\). The full-wave rectified voltage is \(24 \mathrm{~V}\) dc, and the supply is \(60 \mathrm{~Hz}\).
A simple capacitor filter fed by a full-wave rectifier develops \(14.5 \mathrm{~V} \mathrm{dc}\) at \(8.5 \%\) ripple factor. What is the output ripple voltage (rms)?
What is the ripple factor of a sinusoidal signal having peak ripple of \(2 \mathrm{~V}\) on an average of \(50 \mathrm{~V}\) ?
Calculate the rms ripple voltage at the output of an \(R C\) filter section that feeds a \(1-\mathrm{k} \Omega\) load when the filter input is \(50 \mathrm{~V}\) dc with \(2.5\) - \(\mathrm{V}\) rms ripple from a full-wave rectifier and capacitor filter. The \(R C\) filter section components are \(R=100 \Omega\) and \(C=100 \mu \mathrm{F}\).
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