Rectifiers design of rectieier for ele.ppt

rectifier design

1. Rayat Shikshan Sanstha’sRayat Shikshan Sanstha’s
Veer Wajekar A.S.C. College,Phunde
Department of Physics Department of Physics
Prof. Ghorpade U. T.
Topic – “DC POWER SUPPLIES - RECTIFIERS”

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
Rectifier
Half-wave Rectifier Full-wave Rectifier
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-waveCentre-tapBridge type
No. of diode1 2 4
Transformer
necessary
Yes Yes Yes
Maximum
efficiency
40.6% 81.2% 81.2%

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