I'm trying to build a circuit with 2x NiMH batteries as power source that can output up to 2A when tact switch at mosfet gate is closed, and will stop at battery voltage is at or below 2.0V (to protect batteries from over discharging.)
To achieve this, I'm using a MOSFET with minimum Vgs of 2.0V.
The problem is, I can't find a way to do voltage protection and tact switch protection at the same time.
If I want to prevent my tact switch from burning, I'll have to limit the current passing through by adding resistors. But doing this is of course impractical as it will make gate voltage too low to operate and work as over discharge protection....
I'm really curious if what I'm doing is actually feasible. I have no electrical engineering background so I have very limited knowledge on ways and parts to achieve desired function.
I do did some research and find some circuit called
Soft Latching Power Switch, which uses single tact switch to control high current circuit.
It is very close to what I want to do, but I have no idea how to tweak the circuit to realize my thoughts...