Simple 3.7 volt battery charger with auto cut off

In this video, I will show you how to make 3.7 volt 18650 battery charger auto cut off with constant voltage & current, using very few components at home.

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Required Components For This 3.7 volt battery charger circuit.

1. MJE13005 Transistor or (Any NPN).
2. TL431 Shunt Regulator.
3. 2x 1 Kilo Ohms Resistors (1/4w).
4. 680 ohms Resistor (1/4w).
5. 47 & 470 ohms Resistors (1/4w).
6. Anode Bi Colour LED (Green + Blue).
7. Recommended to make on Pref Board.


IC chip: https://www.utsource.net
IGBT: https://www.utsource.net/category/elec-component/modules/igbt-1.html
electronic component: https://www.utsource.net
Capacitor: https://www.utsource.net/category/passive-components/capacitors-1.html
diode: https://www.utsource.net/category/elec-component/transistors/diode-1.html
find chips: https://www.utsource.net
Transistors: https://utsource.net/category/elec-component/transistors-1.html
Darlington: https://www.utsource.net/category/elec-component/modules/darlington-transistors
Sensors: https://www.utsource.net/home/sensors"

Circuit Diagram & PCB layout, Gerber Files Download link
https://drive.google.com/file/d/1JqQCjN1C0AoUj6LcX2dvP47rbMZabp9v/view?usp=drivesdk

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#batterycharger #18650 #Electronics #Circuit #Projects