Lab Report 03ID 193 15 13568 PDF

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Lab Report Course Name: Basic Electronics Lab Course Code: CSE-213 Experiment No: 03 Experiment Name: Study of Half Wave Diode Rectifier circuit .

SUBMITTED TO: Shuvo Das Department of ETE

SUBMITTED BY: Name: Rashedul Islam Rafi ID: 193-15-13568 Section: B Department of CSE Daffodil International University

Object : I am going to test the half wave diode rectifier .

Tools Required : 1. Breadboard (one piece) 2. Diode (one piece) 3. Resistor 10kΩ (one piece) 4. Polarized Capacitor (one piece) 5. Function generator (one piece) 6. Oscilloscope (two piece)

Circuit diagram for Half Wave Diode Rectifier without filtering

Circuit diagram for Half Wave Diode Rectifier with filtered by adding a capacitor(1µF)

Circuit diagram for Half Wave Diode Rectifier with filtered by adding a capacitor(100µF)

Lab Report : By connecting capacitors to the circuit, we can filter the AC current. From the first circuit diagram we can see that there is no capacitor. This is why in the output oscilloscope we can see that the AC current is a combination of DC current. These currents are not filtered. However, if we look at the second circuit diagram, we can see that a capacitor (1µF) has been added. To connect the capacitor, the current is filtered a few times. Now if we look at the third figure, we can see that the current is completely filtered. The output now has only DC current. This is because, we know that a capacitor is a device that behaves twice at the same time. DC current cannot flow through the capacitor. However, AC current can easily flow with the winding capacitor. This is why the DC current flow in the circuit is only with the resistor and the AC current flows in the capacitor. This is why we see a straight line in the oscilloscope and there is only DC current. Discussion : At the output we do not get the source voltage because we use a diode in the circuit. We know that the knee voltage of the diode is 0.7V so some voltage is omitted here. So, we get some low voltage at the output. The End...