USB OTG and Charging circuit question Answered
I've got an old tablet (some unknown chinese brand with zero support) that has one microUSB port for charging and connecting external USB devices (known as OTG). But I'd like to do both. Found a cable that has the required connections but it doesn't work and I'm trying to understand why. mobdro
I attached a device to the USB and attached charger, and the device was getting power, so VCC and ground are wired correctly. Connected USB device and tablet, and device was detected, so the OTG side is all good. But that means power is also flowing to the tablet from the charger. So connect charger and tablet, but not charging.
I mean, it makes my brain hurt more thinking about why this does work with my phone. Power flowing from charger to USB, fine, but the phone is also providing power to the USB, also fine (parallel power. nothing odd here), AT THE SAME TIME IT IS RECEIVING POWER TO CHARGE! https://sarkariresult.onl/