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ELECTRONIC DEVICES AND CIRCUITS LAB #4 BRIDGE RECTIFIER AND CAPACITIVE FILTERING Lab Result Sheet Name __________________ Sketch the Vout waveform with a 10 µf capacitor across RL showing the maximum, minimum and zero voltage levels. Vout, max = _______ Vout Vout, min = __________ 0V VRIPPLE, PP = _______ Vout, meas = __________ Vout, avg = 0.5( Vout, max + Vout, min ) = ________ Ripple freq Measure Vout with DVM with 10 µf capacitor fR = ___________ Vout = ________ Sketch the waveform showing the peak to peak ripple voltage with C = 100 µF and with the scope to AC input. VRIPPLE, PP = _______ RIPPLE VOLTAGE QUESTIONS: 1. A transformer is rated at 120Vrms primary/46V rms secondary. What peak to peak secondary voltage would be displayed on a scope? VSec,pp = _______________ 2. A scope measures a secondary voltage as 42.4 Vpp, what would an AC voltmeter (DVM) read ? DVM reading _____________l 3. The % ripple is calculated as Vpp ripple X 100% VDC Determine the % ripple for both capacitors used in the experiment. % Ripple (10 uF) = ____________ % Ripple (100 uF) = ____________ Signed ……………………………… Date……………………….