Como a fonte Chaveada do carregador mantém exatamente 5V estáveis?

Have you ever wondered how a charger can consistently deliver a stable 5 volts even when the mains voltage changes all the time? In this video, you'll understand, simply and directly, how the output control of a switched-mode power supply works and what the true role of the feedback circuit inside the charger is. I'll show you the complete energy path: from the mains input, through the rectification circuit, high-frequency switching, compact transformer, and especially the block that almost no one explains properly — the feedback with optocoupler and PWM control. You'll understand how the charger "measures" the output in real time and automatically adjusts its internal operation to maintain a stable 5V, even when the load changes. In the end, you'll look at any charger completely differently and understand why it doesn't burn out your cell phone. If this type of practical explanation helps you truly understand electronics, subscribe to the channel and comment: "I understood the feedback" or "I want part 2" so I can continue the series. 🔔 Next video: we'll delve even deeper into the operation of the high-frequency transformer within these power supplies. #electronics #switchingpower supplies #charger #5v #PWM #transformer #optocoupler #electricalengineering