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HALFWAVE RECTIFIER

AIM

To study the characteristics of a half wave rectifier.

COMPONENTS AND EQUIPMENTS REQUIRED

SINo

NAME SPECIFICATION QUANTITY

12

34

5

6

TRANSFORMERDIODE

RESISTORCAPACITOR

BREAD BOARD

CONNECTING WIRES

0-12VIN 4001

1K470 F , 25 V

1 NO1 NO

1 NO1 NO

1 NO

AS REQUIRED

THEORY

A rectifier converts AC to pulsating DC by eliminating the negative half cycle of the input voltage .During positive half cycle of the input voltage, upper end of the secondary of the transformer is positiveand lower end is negative. Therefore the diode is forward biased and hence it conducts and out put

voltage is equal to input voltage.During negative half cycle of the input voltage, upper end of the secondary of the

transformer is negative and lower end is positive. Therefore the diode is reverse biased and hence it does

not conduct and out put voltage is equal to zero.

Vrms = Vm/2 Vdc= Vm /

Ripple factor= Ripple voltage/dc voltage

= 2 1

1k

0-230V/50Hz

230V/9V

D

470 microF OUTPUT

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PROCEDURE

1. Set up the circuits on bread board

2.Observe wave form across RL on the CRO.3.Note the peak value4.Calculate the ripple factor and Vdcusing the equations.5.Repeat the same procedure with filter circuit.

RESULT

Studied the characteristics of half wave rectifier.Theoretical value of ripple factor =...Practical value of ripple factor =Difference between Theoretical value and Practical value =...

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CENTRE TAPPED RECTIFIER

AIM

To study the characteristics of a centre tapped rectifier.

COMPONENTS AND EQUIPMENTS REQUIRED

SI

No

NAME SPECIFICATION QUANTITY

1

23456

TRANSFORMER

DIODERESISTORCAPACITORBREAD BOARDCONNECTING WIRES

9-0-9V

1N 40011K470 F , 25 V

1 NO

2 NO1 NO1 NO1 NOAS REQUIRED

THEORY

A rectifier converts AC to pulsating DC.During positive half cycle of the input voltage, upper end of thesecondary of the transformer is positive and lower end is negative. Therefore the diode D 1is forward

biased and diode D2 is reverse biased .Therefore D1conducts and out put voltage is equal to input voltage.During negative half cycle of the input voltage, upper end of the secondary of the

transformer is negative and lower end is positive. Therefore the diode D1is reverse biased and diode D2

forward biased,hence it conducts and output voltage is same as that of positive half cycle.

Vrms = Vm/2 Vdc=2 Vm / Ripple factor = Ripple voltage/dc voltage

= 2 1

230V/50Hz

470 microF

D1

D2

9-0-9

1K

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PROCEDURE

1. Set up the circuits on bread board2. Observe the transformer secondary voltage(Vac) and wave form across RL on the CRO.

3.

Note the peak value4.

Calculate the ripple factor and Vdcusing the equations.

5. Repeat the same procedure with filter circuit.

RESULT

Studied the characteristics of centre tapped rectifier.Theoretical value of ripple factor =...

Practical value of ripple factor =Difference between Theoretical value and Practical value =...

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BRIDGE RECTIFIER

AIM

To study the characteristics of a centre tapped rectifier.

COMPONENTS AND EQUIPMENTS REQUIRED

SI

No

NAME SPECIFICATION QUANTITY

1

234

56

TRANSFORMER

DIODERESISTORCAPACITOR

BREAD BOARDCONNECTING WIRES

0-12V

IN 40011K470 F, 25 V

1 NO

4 NO1 NO1 NO

1 NOAS REQUIRED

THEORY

A rectifier converts AC to pulsating DC.During positive half cycle of the input voltage, upper end of thesecondary of the transformer is positive and lower end is negative. Therefore the diode D 1and D3 are

forward biased and diode D2and D4 are reverse biased .Therefore diode D1and D3 conducts and out putvoltage is equal to the input voltage.

During negative half cycle of the input voltage, upper end of the secondary of the

transformer is negative and lower end is positive. Therefore the diode D1 and D3are reverse biased anddiode D2and D4 are forward biased,hence it conducts and out put voltage is same as that of positive half

cycle.

Vrms = Vm/

2 Vdc=2 Vm /

Ripple factor= Ripple voltage/dc voltage

= 2 1

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PROCEDURE

1. Set up the circuits on bread board2.

Observe the transformer secondary voltage(Vac) and wave form across RL on the CRO.3. Note the peak value4. Calculate the ripple factor and Vdcusing the equations.

5. Repeat the same procedure with filter circuit.

RESULT

Studied the characteristics of bridge rectifier.

Theoretical value of ripple factor =...

Practical value of ripple factor =Difference between Theoretical value and Practical value =...

~

~+-

230V/50Hz

470 microF

D1

D2

9-0-9

1KD3

D4