variable power supply design
TRANSCRIPT
Power Supply Design Variable
Industrial Attachment Training-2017Rainbow Automation
Presented By:Engr. Shah Mim Obydulla
B.Sc in EEE (DUET)Director of
Rainbow Automation
Circuit Diagram
Pure dc
+
I/P220V AC
O/P
12V*2 , 3000mAPulse sating dc
ac + dc
+ V
0 V
D11N4007
IC
LLM 317
560R
3
1
2
Industrial Attachment Training-2017Rainbow Automation
Fig: Circuit Diagram Of Variable Power Supply
+1000uf50V
C 1 Output
0 V
_17 V V
D21N4007
Transformer
10k
V rms = V max * 0.7071=24 x 0.7071=17V
Pure dc
+1000uf50V
C 1
I/P220V AC
O/P
12V*2 , 3000mAPulse sating dc
ac + dc
Output_
17 V V
0 V
D11N4007
D21N4007
IC
Transformer
LLM 317
10k
560R
3
1
2
V rms = V max * 0.7071
Industrial Attachment Training-2017Rainbow Automation
Necessary Equipment
Transformer (12V x2 ,3000mA)------01pcs
Diode (IN4007)-------------------------02pcs
Capacitor (1000µF/50V)-------------01pcs
Regulator (IC LM317)------------------01pcs
Resistor (560 ohm)--------------------01pcs
V rms = V max * 0.7071=24 x 0.7071=17V
Variable Resistor (Pot 10K)------------01pcs
DC Load (Fan-12V)--------------------01pcs
Transformer
A.C Input 220V
A.C Input 220V
A.C O/P 12V
Industrial Attachment Training-2017Rainbow Automation
A.C Output
A.C Input 220V
A.C O/P 12V
0V
Fig: Transformer Fig: Transformer Symbol
Diode
Fig: Diode
Anode Cathode
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Fig: Diode Symbol
Capacitor
+ + -
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Fig: Capacitor Fig: Capacitor Symbol
+
-
-
LM317 IC Pin Configuration
Industrial Attachment Training-2017Rainbow Automation
Fig: LM317 IC
DC Load
Industrial Attachment Training-2017Rainbow Automation
Fig: Cooling Fan & Lamp e.t.c
Resistor
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Fig: Resistor Fig: Resistor Symbol
Variable Resistor
Industrial Attachment Training-2017Rainbow Automation
Fig: Variable Resistor Fig: Variable Resistor Symbol
Wiring Diagram
Input AC220 V
2 31
Industrial Attachment Training-2017Rainbow Automation
Fig: Wiring Diagram of Variable Power Supply
Industrial Attachment Training-2017Rainbow Automation