Dan (gearhead)
New Member
I want to build a circuit or by one where I can check the supply voltage and when it drops below a certain level I want to draw a pin on a pic from high to low.
I don't want it to draw that much current either....any suggestions?
I was thinking of a simple circuit with a voltage divider and a transistor with the base connected between the two voltage divider resistors and the emitter to the pin and through a third resistor to ground and the collector to the supply voltage but I don't know how it will act on the border line when the transistor opens up through the collector and the emitter..
So any suggestions please post....
Thnx.
I don't want it to draw that much current either....any suggestions?
I was thinking of a simple circuit with a voltage divider and a transistor with the base connected between the two voltage divider resistors and the emitter to the pin and through a third resistor to ground and the collector to the supply voltage but I don't know how it will act on the border line when the transistor opens up through the collector and the emitter..
So any suggestions please post....
Thnx.