Hello,
I would need a circuit that cuts off the power from the car battery when the voltage falls too much down. I have a small fridge in my car and I've already twice forgot to unplug it, with the result that the battery gets too empty for the car to start.
So I would need a circuit which connects between the 12v outlet and the fridge, and disconnects the power when the voltage falls to about 11.7v, and if possible reconnects when the power rises a bit above it. It should take 3-4A.
I've looked at this low voltage disconnect circuit but I would like to make one which would be a little more simple, with less components. Does anyone have any good ideas or example circuits?
I would need a circuit that cuts off the power from the car battery when the voltage falls too much down. I have a small fridge in my car and I've already twice forgot to unplug it, with the result that the battery gets too empty for the car to start.
So I would need a circuit which connects between the 12v outlet and the fridge, and disconnects the power when the voltage falls to about 11.7v, and if possible reconnects when the power rises a bit above it. It should take 3-4A.
I've looked at this low voltage disconnect circuit but I would like to make one which would be a little more simple, with less components. Does anyone have any good ideas or example circuits?