06-08-2013, 12:38 PM
HALF WAVE RECTIFIER
Aim
1. To design a Half wave rectifier with simple capacitor filter.
2. To measure the DC voltage under load and ripple factor and to compare with calculated
values.
Half wave rectifier
(i) Without Capacitor
1. Test your transformer: Give 230v, 50Hz source to the primary coil of the transformer and
observe the AC waveform of rated value without any distortion at the secondary of the
transformer.
2. Connect the half wave rectifier as shown in figure.
3. Measure the Vdc & Vac using DC and AC Voltmeters.
(ii) With capacitor
1. Connect the half wave rectifier with filter circuit as shown in fig.
2. Assume r= 10% of ripple peak-to-peak voltage for R= 500Ω. Calculate C using the
formula r = 1/2√3fRC
3. Connect CRO across load.
4. Keep the CRO switch in ground mode and observe the horizontal line and adjust it to the
X-axis.
5. Switch the CRO into DC mode and observe the waveform.
Result
Thus the Full wave rectifier is designed with and without capacitor filter and the
corresponding dc output voltages and the ripple factors are measured and verified with the
theoretical values.