Processing lights from the phone battery is going to fail

From the waste of discarding a wasted phone battery, the Le Hong Phong school group (HCMC) came up with the idea of ​​reusing them into flashlights.

With the physical and electrical knowledge of grade 11, the group of students including: Pham Trung Hieu, Luu Ly Ky Ngo, Nguyen Cong The Bao, and Vu Thanh Dat, Nguyen Nhat Quang created a portable lamp from waste as battery. broken phone .

Led flashlight has a source that is a mobile phone battery made by the student group.

The device consists of 6 super bright LEDs that are captured parallel on a circuit board and connected in series through the resistor and connected to the battery. The lamp is controlled by a 3-pin switch to the right to turn on the light, while pushing it to the right is charging. This design avoids the situation of turning on the light and charging the battery completely.

The Bao, a member of the group, said that in addition to being used as a portable light, the battery of a phone battery could replace the wall clock, desk lamp or portable fan.

" The purpose of the group is to encourage people to create products that are easy to make and use, while being meaningful and saving the environment ," said The Bao.

The light from waste of Le Hong Phong school group has just been awarded 3 prizes for students to design environmental protection products by Ho Chi Minh City Department of Education and Training .