I'm looking for a transistor device (I think), but instead of turning on when the gate gets above a certain voltage, it will turn on when the gate voltage drops below a certain voltage (ideally 3V or so).
Basically, I'm looking for a low cost, low power, no voltage overhead way to drop resistance when the voltage drops to 3V. The easiest way I can imagine this to be done is a switch that would turn on when the voltage drops below a certain point to bypass a resistor.
Any help would be greatly appreciated.
Basically, I'm looking for a low cost, low power, no voltage overhead way to drop resistance when the voltage drops to 3V. The easiest way I can imagine this to be done is a switch that would turn on when the voltage drops below a certain point to bypass a resistor.
Any help would be greatly appreciated.