Est. Budget: $30.00
Design a circuit that isolates a battery from its charger to prevent discharging the battery.
This would be a fun but challenging project for a EE student. I am hoping to build a relationship for future work.
It should use a FET since the voltage drop when on must be 100 mV and when off must be 4M ohm.
Input1: Charger. Up to 4.2V when on, 20 uA load when off.
Input2: Charge Control: Open collector, closed ...