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Chapter 15: Problem 1
What is the ripple factor of a sinusoidal signal having peak ripple of \(2 \mathrm{~V}\) on an average of \(50 \mathrm{~V}\) ?
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A \(500-\mu \mathrm{F}\) capacitor provides a load current of \(200 \mathrm{~mA}\) at \(8 \%\) ripple. Calculate the peak rectified voltage obtained from the 60 -Hz supply and the dc voltage across the filter capacitor.
A full-wave rectifier operating from the 60 -Hz ac supply produces a 20-V peak rectified voltage. If a \(200-\mu \mathrm{F}\) capacitor is used, calculate the ripple at a load of \(120 \mathrm{~mA}\).
A full-wave rectified voltage of \(18 \mathrm{~V}\) peak is connected to a \(400-\mu \mathrm{F}\) filter capacitor. What are the ripple and dc voltages across the capacitor at a load of \(100 \mathrm{~mA}\) ?
A full-wave rectifier (operating from a 60-Hz supply) drives a capacitor- filter circuit \((C=100 \mu \mathrm{F})\), which develops \(12 \mathrm{~V}\) dc when connected to a \(2.5-\mathrm{k} \Omega\) load. Calculate the output voltage ripple.
Calculate the percentage ripple for the voltage developed across a \(120-\mu \mathrm{F}\) filter capacitor when providing a load current of \(80 \mathrm{~mA}\). The full-wave rectifier operating from the \(60-\mathrm{Hz}\) supply develops a peak rectified voltage of \(25 \mathrm{~V}\).
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