I was thinking of an idea to try out involving a way to stop a mosfet from firing when the voltage drops to certian point using discrete components. I have already posted this on another site but, seems that no one may know anything. I'm asking here cause it appears to have pretty knowledgeable people here.
What's going on in this circuit is that I have 3 switches in series with the gate of the mosfet. Also to point out the parts in this drawing are not going to be the parts choosen just there to make the drawing.
Back to the 3 switches, one of them is a transistor acting like a switch that turns on when a zener diode connected in reverse has a voltage greater than 3.3 connected at its cathode.
That diode after the transistor is to add a known voltage drop to make sure no small voltages that may leak through would still partially turn on the mosfet.
Finally there's an LED connected to the circuit in order to tell if the circuit is operating anymore.
Question is, could like this work?
could I use a voltage divider at the base pin as a replacement to the zener diode?
I understand though I could just opt for a low battery indicator circuit, but I'm trying to reduce the number of parts used.