3.1
Half Wave Rectifier Circuit
a) Construct the center tapped transformer rectifier circuit using a transformer in Figure 5. Observe the output waveform on the oscilloscope. What is the peak-to-peak voltage? Plot the output waveform. Connect the filter capacitor 47μF across the output of the circuit in parallel to the 1kΩ resistor. Be sure to connect the capacitor with proper polarity. It may explode if you don't! Observe the output waveform on the oscilloscope. Plot the output waveform.
b)
3
12V 50 Hz
240 V 50 Hz
1 kΩ
Vo
Figure 5
3.2
Full Wave Rectifier Circuit
a) Construct the center tapped transformer rectifier circuit using a transformer in Figure 6. Observe the output waveform on the oscilloscope.
b) Plot the output waveform WITHOUT the 47μF capacitor.
c) Then connect the filter capacitor 47μF across the output of the circuit in parallel to the 1kΩ resistor.
d) Plot the output waveform and calculate the percentage of ripple
240 V 50 Hz
50 Hz
1 kΩ 47 μF
Figure 6