It would solve the problem temporarily.
But when you forget that detail and accidentally pick up a standard cable, you now have a fire hazard. The USB will attempt to charge your battery in an uncontrolled manner (if it's a rechargeable, then it will keep on charging it beyond fully charged, if it's a primary cell then charging it is a bad idea in the first place).
The Schottky diode is normally a very easy solution; if you really can't stand the voltage drop then a FET circuit can be used. You can get 'ideal diode' chips if you don't fancy designing your own.
But when you forget that detail and accidentally pick up a standard cable, you now have a fire hazard. The USB will attempt to charge your battery in an uncontrolled manner (if it's a rechargeable, then it will keep on charging it beyond fully charged, if it's a primary cell then charging it is a bad idea in the first place).
The Schottky diode is normally a very easy solution; if you really can't stand the voltage drop then a FET circuit can be used. You can get 'ideal diode' chips if you don't fancy designing your own.
Statistics: Posted by arg001 — Tue Feb 13, 2024 1:34 pm