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![Portable USB Charger (Version 2.0) - Instructables](https://www.iarticlesnet.com/pub/img/site/s_51.jpeg)
Portable USB Charger (Version 2.0) - Instructables
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日期:2024-07-08
0.1-0.5 UF Capacitor 6-50v (any type would do) 150-160 ohm Resistor (optional) 9V Battery clip 2.2V 20mA LED color of your choice (optional) Unprinted circuit ......看更多