I thoroughly test and examine a cheap two in one 5V USB charger with a 100-240Vac mains input and a 12-24Vdc car input. I take a look inside, reverse engineer its schematic and explain how does it work. Then I try to do a lot of modifications to the circuit. Surprisingly, this doesn't go horribly wrong, just horribly long :).
Even more improvements of the buck regulator:
• Building a better buck...
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Негізгі бет Ғылым және технология Questionable 2-in-1 USB charger - test, schematic & modifications
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