The text is a transcript of a video where the speaker is building a homemade flashlight using a coil, magnet, and battery-free technology. The project is inspired by a previous attempt to build a V8 engine and the speaker is using a similar concept to create a crank flashlight.
The speaker explains the process of building the flashlight, including winding the coil, attaching the magnet, and creating a crankshaft. They also use a reduction gear system from a CD player to increase the rotation speed.
After building the flashlight, the speaker identifies two problems: the polarity of the magnet inverting when it passes close to the coil, and the irregular energy output. To solve these issues, they use a rectifier bridge and capacitors to stabilize the energy output.
The final product is a working flashlight that uses a crank to generate electricity. The speaker notes that it's not a perfect design, but it's a creative solution using existing technology.
The video also promotes a project by SESI Espírito Santo, which offers classes in robotics, technology, and innovation. The speaker encourages viewers to register for the program, which is open for registration until October 19th.
Here are the key facts extracted from the text:
1. The narrator is attempting to build a crank flashlight.
2. The flashlight will use a magnet and coil to generate electricity.
3. A solenoid motor is used in the project.
4. The narrator plans to use a computer application to count the turns of the coil.
5. The coil has 600 laps.
6. A drill is used to roll up the coil.
7. The coil is attached to a syringe.
8. A piece of wire is used as a connecting rod.
9. The narrator uses hot glue and baking soda to fix the wire in place.
10. A crankshaft is created using a piece of wire.
11. The crankshaft is attached to a wooden base.
12. A gear system is used to reduce the rotation of the crank.
13. The gear system is taken from a CD player.
14. A rectifier bridge is used to stabilize the energy output.
15. Capacitors are used to regulate the energy.
16. The flashlight uses a white LED light.
17. The project took around 2-3 hours to complete.
18. The narrator suggests that the flashlight could be improved by using more LEDs.
19. The flashlight is not compact enough to fit in a pocket.
20. The project is part of a educational program sponsored by Sesi Espírito Santo.