1. A[hLS .,[S8=L;L8L V[g0 .,[S8=MlGS;
;[g8Z VMO V[S;,g;
sVM8MDMAF., ;[S8Zf
DM0I], V[PALP8LPv _#
A[hLS .,[S8=L;L8L V[g0 .,[S8=MlGS;
8F[5LS G\P13
Z[S8LOFIZ

2. RECTIFIER Objectives:
Students will understand the necessity of rectifier circuit.
Students will learn about the meaning of rectifiers.
Students will tell the types of rectifiers.
Students will get information about use of rectifiers.

3. IMPORTANCE & REQUIREMENTS
For reasons associated with economics of generation and transmission, the electric power available is usually an a.c. supply.
The voltage varies sinusoidally and has a frequency of 50Hz. It is used for lighting, heating and electric motors.
But there are many applications (e.g. electronic circuits) where d.c. supply is needed. When such a d.c. supply is required, the mains a.c. supply is rectified by using crystal diodes.

4. TYPES OF RECTIFIERS
Centre-tape
full-wave rec.
Full-wave
Bridge rec.

5. HALF WAVE RECTIFIER
Circuit Diagram with waveforms:

6. FULL WAVE RECTIFIER Centre-tape full-wave Rectifier:
Circuit Diagram with waveforms:

7. FULL WAVE RECTIFIER Full-wave bridge Rectifier:
Circuit Diagram with waveforms:

8. COMPARISON OF RECTIFIERS
Half-wave
Centre-tap
Bridge type
No. of diode 1 2 4
Transformer necessary No
Yes
Maximum efficiency
40.6%
81.2%

9. Thus, we can understand the importance, necessity & use of Rectifiers.
CONCLUSION
Thus, we can understand the importance, necessity & use of
Rectifiers.