A safe USB phone charger? What's inside?
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Dangerous USB phone chargers 4
8:56
Inside a common eBay lithium cell charger - with schematic
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Dangerous USB chargers 18
18:09
Manera sencilla de hacer una mini estufa de calefacción. ¡Energía gratis para tu hogar! Impresionant
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Dangerous USB phone chargers 3 (& one good charger)
22:12
Dangerous USB phone chargers 9 (with high voltage test)
20:22
How mobile charger SMPS flyback circuits work, FBX Learning, circuit diagram explanation of charger
23:26