I want to ask you about a situation which i couldnt find the exact solution or better way to do the job. The situation is i have 3 phase (380V) induction motor and one of the phases to the motor had a switch and the rest two phases and the the phase after the switch goes to conductors and then to ac induction motor, what i want is how can i make a circuit to actualy count if the switch is on/off and if the switch is on but also detect the power outage
One idea for me to use opamp for the phase after the switch to count if the switch is on/off and one opamp before the switch if there is power in the phase but im not sure if i can do these with only one phase of 3 phase system
And another idea while i was looking to some similar questions is directly connecting the phase after the switch to the pic controller with a high resistance to verify if switch is on or not and again the same before the switch if there is power or not
Any ideas, or links or just a way for me to overcome this situation?
btw the switch is a push once switch i actually dont know the exact name but what it does is when you push, it closes the circuit and when you push it again, it opens the circuit.