Încărcător USB "45W" ADC-F004 Quick Charge de pe Banggood – Test și analiză electronică

✔️Hello! In the video above, I tested and analyzed an ADC-F004 USB charger purchased from Banggood, advertised as a 45W charger with Quick Charge functionality. I started with an overview of the charger, then verified the voltages on the USB-A and USB-C ports, both under no-load and load conditions. Although it is marketed as a Quick Charge device, my tests revealed no real QC support, providing only a 5V output. Next, I took the charger apart to analyze its internal electronics. I identified the primary controller (HC2707C), the secondary synchronous rectifier (HC7702A), the filtering stage, the transformer, and other key components. I also reverse-engineered the schematic to better understand its design. I measured the output ripple, followed by a comparative test after adding a polymer capacitor to the output, checking if the filtering could be improved. Finally, I analyzed the integrated panel voltmeter/ammeter, and in the conclusions, I discussed its strong points as well as the issues found, including the missing class Y1 safety capacitor between the primary and secondary stages. ✔️To access the charger schematic, use the following link: https://drive.google.com/file/d/1NCeo... ✔️Timestamps: 00:00 - Introduction 00:16 - USB charger ADC-F004 overview 00:56 - Checking USB and USB-C port voltages under no-load 02:20 - Load testing USB and USB-C ports 04:28 - Internal electronics analysis 07:52 - Circuit schematic analysis 10:12 - Output ripple measurement 11:15 - Ripple test after adding a polymer capacitor 11:39 - Transformer analysis 14:39 - Panel voltmeter/ammeter analysis 16:04 - Conclusions 17:31 - End ✔️I created a playlist for testing other USB chargers:    • Incarcatoare USB   📌 If you enjoyed this video, don't forget to hit the Like button, subscribe, and leave a comment with your thoughts.