His question was this :
how does the opamp get the 3V3 input to switch on the FET when connected to USB power only?
which your post answered, I simply supplemented what you said by giving a larger overview. I don't think his head will explode.
His question was this :
how does the opamp get the 3V3 input to switch on the FET when connected to USB power only?
which your post answered, I simply supplemented what you said by giving a larger overview. I don't think his head will explode.