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Part 1 - Single-phase Diode Bridge Rectifier - Resistive Load
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Exercise 1: Varying Resistive Load (without smoothing capacitor, C=0)
Open the Single-Phase Diode Bridge Rectifier panel, choose in the menu Pre-Selected: Single Phase: Varying Resistive Load without smoothing capacitor.
Figure 11: Single-Phase Diode Bridge Rectifier Panel with a Resistive Load of 16.5 ohms
Default Parameters
AC Source Voltage : Ve= 120 V
Frequency: 60 Hz
R= 16.5 Ω
Keep the AC Source Voltage to 120 V, observe the waveforms, and calculate the average output current (load current) and fill out table 4 for different values of the resistance R.
R (Ω) | 16.5 | 25 | 50 | 100 | 200 |
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Average load current (A) |
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Table 4: Effect of Varying Resistive Load
Calculate the output frequency and compare it with the input frequency.
Compare the input current with the output current and the input voltage with the output voltage.
Deduce the role of the single-phase diode bridge rectifier.
Justify the shape of the output voltage and output current.
Calculate the form factor and the ripple factor.
Exercise 2: Varying Resistive Load (with smoothing capacitor)
In the panel, choose under Pre-Selected: Single Phase: Varying Resistive Load with smoothing capacitor.
Figure 12: Single-Phase Diode Bridge Rectifier Panel with R=16.5 ohms and C= 470 µF
Complete tables 5, 6, and 7 for different values of the smoothing capacitor.
Case 1: C= 470 µF
R (Ω) | 16.5 | 25 | 50 | 100 | 200 |
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The maximum peak value of output voltage (V) |
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The minimum peak value of output voltage (V) |
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Form factor |
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Ripple factor |
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THD of AC-source Current (%) |
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Table 5: Case 1- Varying Resistive Load With Smoothing Capacitor
Case 2: C= 1100 µF
R (Ω) | 16.5 | 25 | 50 | 100 | 200 |
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The maximum peak value of output voltage (V) |
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The minimum peak value of output voltage (V) |
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Form factor |
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Ripple factor |
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THD of AC-source Current (%) |
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Table 6: Case 2- Varying Resistive Load With Smoothing Capacitor
Case 3: C= 0.1 F
R (Ω) | 16.5 | 25 | 50 | 100 | 200 |
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The maximum peak value of output voltage (V) |
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The minimum peak value of output voltage (V) |
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Form factor |
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Ripple factor |
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THD of AC-source Current (%) |
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