Hello, if you wouldn't mind, I have been working on this circuit for a week and it still is not working!!
I am trying to detect water by running 12V through a wire, if there's water, the "switch" (it is basically an open wire with the leads about half an inch apart) will be closed, if no water, the "switch" will be open. I am then using that 12V to attempt to trigger a 5V (or 12V, either doesn't work) relay to then activate a water pump (takes 24V) whenever there isn't water. The "switch" appears to be working but I think I lose too much current through it.
https://www.circuitlab.com/circuit/5jxz68/waterdetector/
The issue is that I don't think I'm getting enough current through the relay because even though I can measure over 5V at both ends of the relay coil with respect to ground, the relay does not activate! If I remove the resistor R1, the voltage drops to less than 1V... HELP! Thanks
I am trying to detect water by running 12V through a wire, if there's water, the "switch" (it is basically an open wire with the leads about half an inch apart) will be closed, if no water, the "switch" will be open. I am then using that 12V to attempt to trigger a 5V (or 12V, either doesn't work) relay to then activate a water pump (takes 24V) whenever there isn't water. The "switch" appears to be working but I think I lose too much current through it.
https://www.circuitlab.com/circuit/5jxz68/waterdetector/
The issue is that I don't think I'm getting enough current through the relay because even though I can measure over 5V at both ends of the relay coil with respect to ground, the relay does not activate! If I remove the resistor R1, the voltage drops to less than 1V... HELP! Thanks