Hand Generator #electric #experiment #diy #science #led

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I built a hand-crank generator using a CD player DC motor with a gearbox, replacing the original gear motor to improve efficiency. The original gear motor could only generate around 3.5V, while the CD player motor produces 10V, making it a much better option for power generation. By keeping the gearbox, I was able to maintain the mechanical advantage while increasing the electrical output.

To make better use of the generated power, I designed a Joule thief circuit to efficiently drive 16 LEDs, ensuring that even small amounts of generated energy are utilized effectively. Additionally, I incorporated a 10F supercapacitor in a series-parallel configuration to store excess energy, allowing for a more stable power supply. This setup not only provides instant lighting but also helps in energy storage for later use.

This simple yet efficient hand generator demonstrates how a small modification can significantly improve energy generation and storage, making it a great solution for DIY power projects!