on video Automatic 3.7V Battery Charger Battery Low | 50% Charged | Fully charged

 Automatic 3.7V Battery Charger Battery Low | 50% Charged | Fully charged

Welcome to my channel "Technical Premier" here you will learn how electronics is work..Here you will also learn to make diy electronics circuits, handmade crafts, new inventions, mechanical, computer software..Here you will find lots of electronics projects and handmade circuits..

Friends in this video we will learn how to make 3.7v automatic battery charger..It is a 3.7v battery charger with 3.7v battery level indicator circuit..

3.7v battery charger circuit with auto cut off

3.7v battery charger circuit diagram

3.7 volt battery charger automatic

Automatic 3.7 volt battery charger circuit

18650 battery charger with auto cutoff

3.7v battery full charge indicator

3.7v battery protection circuit

In this video I'm showing how to make 3.7 volt battery charger circuit with auto cut off on Full Charge.

For that i used TL431 Shunt Regulator, it's actually an adjustable zener.

I used mosfet which remains on by supplying small positive voltage using 1k resistor.

And cut off voltage is set at reference pin1 of TL431 by using resistors from both positive & negative.

When voltage in circuit reaches threshold point TL431 connects negative voltage from pin2 to pin3 so positive voltage at mosfet gate pin becomes zero and mosfet turns off.

 Automatic 3.7V Battery Charger Battery Low | 50% Charged | Fully charged

Welcome to my channel "Technical Premier" here you will learn how electronics is work..Here you will also learn to make diy electronics circuits, handmade crafts, new inventions, mechanical, computer software..Here you will find lots of electronics projects and handmade circuits..

Friends in this video we will learn how to make 3.7v automatic battery charger..It is a 3.7v battery charger with 3.7v battery level indicator circuit..

3.7v battery charger circuit with auto cut off

3.7v battery charger circuit diagram

3.7 volt battery charger automatic

Automatic 3.7 volt battery charger circuit

18650 battery charger with auto cutoff

3.7v battery full charge indicator

3.7v battery protection circuit

In this video I'm showing how to make 3.7 volt battery charger circuit with auto cut off on Full Charge.

For that i used TL431 Shunt Regulator, it's actually an adjustable zener.

I used mosfet which remains on by supplying small positive voltage using 1k resistor.

And cut off voltage is set at reference pin1 of TL431 by using resistors from both positive & negative.

When voltage in circuit reaches threshold point TL431 connects negative voltage from pin2 to pin3 so positive voltage at mosfet gate pin becomes zero and mosfet turns off.