Answer Happy

Equipment: 4 diodes SY625/1.5, 20 V mms ac voltage source, 10 kA resistor (0.5W). 1 multimeter. Experimental Procedure: 1. The Half-Wave Rectifier (a) With the ac supply switched off, construct the circuit shown in Figure EX2.1. (b) Switch on the oscilloscope. Connect the Y input to the common of the oscilloscope and adjust the trace to coincide with the horizontal grid line at the centre of the screen. (c) Switch on the ae supply. Adjust the Y scale and the time base of the oscilloscope to obtain a stable waveform on the screen. Adjust the time base so as to observe at least 3 cycles of the signal. (d) Sketch the waveform with the peak voltage Vin volts and the period T'in ms clearly indicated. Note the average value of the output voltage on the de voltmeter Figure EX2.1 D oscilloscope Y input of supply 20 Vrms TO KO load resistor V 50 V de oscilloscope common
(e) Now.place an electrolytic capacitor CIF across the load resistance, as shown in Figure EX2.2 (such a capacitor is known as a filter capacitor). Make sure that the positive terminal of the capacitor is connected to the positive terminal of the output () Sketch the output voltage waveform, indicating the peak-to-peak variation (ripple) in volts. Note the average value of the output voltage. ) Switch off the as supply. Replace the capacitor with one having capacitance C = 22 JF and repeat steps (c) and () Figure EX22 D oscilloscope Ymput supply 30 Vrms 10 load resistor 50 de oscilloscope con 2. The Full-Wave Rectifier (a) With the ac supply switched off, construct the circuit shown in Figure EX2.3. (b) Repeat steps (b)-(e) in section 1. Figure Ex2.1 oscilloscope crupply 20 V 10 SOV de micillope common Evaluation of Experimental Results: 1. Half-Wave Rectifier 1.1 For the rectifier without a fifter capacitor, i. Compare the peak value of the output voltage with the peak value of the ac source voltage. If there is a difference, give an explanation for this difference. a
ii. Compare the measured average value of the output voltage with the theoretical result from the Preliminary Work. If there is a difference between these values that cannot be explained by measurement errors, state possible causes of this difference. 1.2 For the rectifier with a filter capacitor, Repeat steps (1)-(17). Explain the effect of the filter capacitor on the ripple voltage. 2. Full-Wave Rectifier Repeat steps 1.1 and 1.2 above. Discussion: 1. Compare the average values of the output voltages of the half-wave and the full-wave rectifiers without filter capacitors. State the advantages and disadvantages of one type over the other. 2. Compare the average values of the output voltages of the two rectifier types with filter capacitors for the two cases C=1 uF and C = 22 uF. 3. Discuss the accuracy of the theoretical results derived from analysis of rectifiers based on the ideal diode model Conclusion State any conclusions that you may draw from this experiment regarding the application of diode rectifiers.
CF) Peak Voltage 1 Output Voltage (V) 44 1.26 1 4 3.4 22 1 3.386 Tablet Hafes rectifier Figure 2-income with filter Four Window wal FC Fiew With FC
C (MF) Peak Voltage (V) 40 0.8 0.4 Output Voltage (V) 2.18 3.28 3.2 1 22 Table 2 - Full-Wave Rectifier m Figure 6. Wam with offer capacitor
940.Our Figure 7 - Waveform with IuFC 182.DE Figure 8 - Waveform with 22 uF C -