hello friends today i am showing how to make simple automatic 12v battery charger at home
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circuit diagram :- https://drive.google.com/open?id=0B6rqfDBG5DHLMTN0LVlHajFWLTA
GET PCB FILE :- https://drive.google.com/file/d/1HLl8eoSDBnjYoN4t-gRqaRl86ztkD_k-/view?usp=sharing
required:-
1. pcb board
http://amzn.to/2hroZyT
2. 1N4007 diode
http://amzn.to/2iNPWd2
3. 330 ohm resistor
http://amzn.to/2hiLqmq
4. 10k resistor
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5. 1k resistor
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6. 2.2k resistor
http://amzn.to/2hrSL6T
7. 10k ohm preset
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8. bd139 NPN transistor
http://amzn.to/2hvenPD
9. 10uf/25v capacitor
http://amzn.to/2hk154L
10. 1000uf/25v capacitor
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11. 12v relay
http://amzn.to/2hrwYMI
12. led
http://amzn.to/2hrqwF9
13. 2 pin connector
http://amzn.to/2hszyBP
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