EXPERIMENT 04

Title of the experiment: Design and simulate a circuit to convert AC signal to DC using half wave rectifier with and without capacitor filter and extract the circuit parameters.

 Aim or objective:  To design and analyze a half-wave rectifier circuit that converts an AC signal to a DC output.  To compare the performance of a half-wave rectifier with and without a capacitor filter in terms of output voltage smoothness and ripple.  To observe and measure the waveform of the rectified output, including peak voltage, average DC voltage, and ripple voltage.

 List of equipment required to conduct the experiment with their specifications: 

Circuit Diagram:

a. Half wave rectifier without capacitor filter :

b. Half wave rectifier with capacitor filter:

Results & Discussion:

1. For HWR Without Filter:

The output voltage is pulsating with a significant ripple.

The average DC output voltage () is much lower than the input peak voltage ().

The ripple factor is high, indicating a non-smooth DC output.

Efficiency is around 40.6%, as typical for a half-wave rectifier without a filter.

2. For HWR With Filter:

The inclusion of a capacitor significantly reduces the ripple in the output voltage.

The average DC output voltage () is approximately equal to the input peak voltage ().

The ripple factor is greatly reduced, resulting in a smoother DC output.

The rectifier with a filter demonstrates better performance for practical DC applications.

Conclusion:

1. The half-wave rectifier without a filter produces a pulsating DC output that is unsuitable for most applications due to high ripple and low DC voltage.

2. Adding a capacitor filter enhances the performance by smoothing the output waveform and increasing the DC output voltage close to the input peak voltage.

3. The experiment demonstrates the importance of filtering in rectifier circuits to achieve a stable DC voltage for practical use.