Basic electronics Full wave rectifier.

1. POWER SUPPLY
PRESENTED BY
Prof. D. M. Parshuramkar

2. A device convert ac power to dc
power is called power supply.
Type of power supply-There are two
types of power supply:
1. Unregulated power supply
2. Regulated power supply

3. Parts of Regulated power supply
1. Step down transformer
2. Full wave rectifier
3. Filter circuit
4. Voltage regulating circuit

5. Parts of Unregulated power supply
1. Step down transformer
2. Full wave rectifier
3. Filter circuit

6. RECTIFIER
Rectifier definition:
A rectifier is an electrical device that
converts an Alternating Current (AC) into a
Direct Current (DC) by using one or more
P-N junction diodes.

8. Output dc power
Efficiency = -----------------------
Input ac power

9. Output ac voltage or
current
Ripple factor = ----------------------
-----------
Output dc voltage or
current

10. TYPE OF RECTIFIER
Types of rectifiers
The rectifiers are mainly
classified into two types:
Half wave rectifier
Full wave rectifier

11. HALF WAVE RECTIFIER
As the name suggests, the half
wave rectifier is a type of
rectifier which converts half of
the AC input signal (positive half
cycle) into pulsating DC output
signal and the remaining half
signal (negative half cycle) is
blocked or lost. In half wave

12. HALF WAVE RECTIFIER

13. IN HALF RECTIFIER
 1. Number of diodes required: 1
 2. Transformer requirement: Not essential
 3. Average value of current, Idc: Imax/pi
 4. Rms value of current, Irms: Imax/2
 5. Peak inverse voltage (PIV): Vmax
 6. Peak load current, Imax: Vmax/(Rload + Rf)
 7. Dc output voltage, Vdc: Idc x Rload
 8. Rectification efficiency (max): 40.6 %
 9. Ripple factor: 1.21
 10. Fundamental frequency of ripple: f
 11. Voltage regulation: good
 12. Transformer utilization factor: 0.286
 13. Form factor: 1.57
 14. Peak factor: 2

14. FULL WAVE RECTIFIER
The full wave rectifier is a type
of rectifier which converts the
full AC input signal (positive half
cycle and negative half cycle) to
pulsating DC output signal.
Unlike the half wave rectifier,
the input signal is not wasted in
full wave rectifier. The efficiency

15. FULL WAVE RECTIFIER

16. IN FULL RECTIFIER
 . Number of diodes required: 2
 2. Transformer requirement: Center tap
 3. Average value of current, Idc: 2Imax/pi
 4. Rms value of current, Irms: Imax/sqr root(2)
 5. Peak inverse voltage (PIV): 2Vmax
 6. Peak load current, Imax: Vmax/(Rload + Rf)
 7. Dc output voltage, Vdc: Idc x Rload
 8. Rectification efficiency (max): 81.2 %
 9. Ripple factor: 0.482
 10. Fundamental frequency of ripple: 2f
 11. Voltage regulation: better
 12. Transformer utilization factor: 0.692
 13. Form factor: 1.11
 14. Peak factor: sqr root(2)

17. BRIDGE RECTIFIER
The Full Wave Bridge Rectifier
Another type of circuit that produces the same
output waveform as the full wave rectifier circuit
above, is that of the Full Wave Bridge
Rectifier. This type of single phase rectifier
uses four individual rectifying diodes connected
in a closed loop “bridge” configuration to
produce the desired output.

18. The Diode Bridge Rectifier

19. IN BRIDGE RECTIFIER
 1. Number of diodes required: 4
 2. Transformer requirement: Not essential
 3. Average value of current, Idc: 2Imax/pi
 4. Rms value of current, Irms: Imax/sqr root(2)
 5. Peak inverse voltage (PIV): Vmax
 6. Peak load current, Imax: Vmax/(Rload + 2Rf)
 7. Dc output voltage, Vdc: Idc x Rload
 8. Rectification efficiency (max): 81.2 %
 9. Ripple factor: 0.482
 10. Fundamental frequency of ripple: 2f
 11. Voltage regulation: good
 12. Transformer utilization factor: 0.812
 13. Form factor: 1.11
 14. Peak factor: sqr root(2)

20. FILTER CIRCUIT
A filter circuit is a device to remove the
A.C components of the rectified output, but
allows the D.C components to reach the
load. A filter circuit is in general a
combination of inductor (L) and Capacitor
(C) called LC filter circuit. A capacitor
allows A.C only and inductor allows D.C
only to pass.

21. TYPE OF FILTER CIRCUIT
SEREIS INDUCTOR FILTER
SHUNT CAPACITOR FILTER
L-SECTION FILTER
Pi-SECTION FILTER

24. Zener Diode Regulator

25. THANK YOU