Скачать или смотреть how to make 9v battery at home | how to make 9v battery rechargeable

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I made a project with a nine-volt battery and a COB LED.This can be especially useful for school projects, and this project is a very small project but very beautiful.To enhance the project, I used a nine volt battery and a COB LED with a magnetic switch.When the magnet is moved near the magnetic switch, the light automatically turns on, and when the magnet is moved away from the switch, the light automatically turns off.This is a very simple circuit. If you watch the entire video, you will understand how I made the circuit.

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