18-04-2014, 03:16 PM
HALF – WAVE RECTIFIER
AIM:
To obtain the load regulation and ripple factor of a half-rectifier.
1. with Filter
2. without Filter
APPARATUS:-
Bread Board
Multimeters –2No’s.
Transformer (6-0-6).
Diode, 1N 4007
Capacitor 100μf.
Resistor 1KΩ.
Connecting wires
THEORY: -
During positive half-cycle of the input voltage, the diode D1 is in forward bias and conducts through the load resistor R1. Hence the current produces an output voltage across the load resistor R1, which has the same shape as the +ve half cycle of the input voltage.
During the negative half-cycle of the input voltage, the diode is reverse biased and there is no current through the circuit. i.e, the voltage across R1 is zero. The net result is that only the +ve half cycle of the input voltage appears across the load. The average value of the half wave rectified o/p voltage is the value measured on dc voltmeter.
PROCEDURE:-
1. Connections are made as per the circuit diagram.
2. Connect the primary side of the transformer to ac mains and the secondary side to the rectifier input.
3. By the multimeter, measure the ac input voltage of the rectifier and, ac and dc voltage at the output of the rectifier.
4. Find the theoretical of dc voltage by using the formula,
RESULT:-
1. The Ripple factor for the Half-Wave Rectifier with and without filters is measured.
2. The % regulation of the Half-Wave rectifier is calculated.