Techqs
Newbie level 3
Hello, I have an AC synchronous motor powered directly from the mains (230V 50htz). The problem is that when I switch off the motor, dc sensors invoved in the same circuitry (powered from the same power source via a power supply) switch off and reset themselves and I do not know exactly why.
I have tried isolating the motor with a low pass (50htz) filter to get rid of EMF feedback down the powerline thru to the sensors, which improves things BUT the problem still persists.
It is as if when the motor is switched off this momentarily starves the sensor of power?? Or could it be a Voltage Reflection caused by some mismatch in impedence between the motor and its power cable ??? (researched this somewhat and found it happens with AC motors) ?? Would be grateful for any suggestions of a cure. Or in particular if it is Voltage Reflection how best can this be remedied - using a diode perhaps ????
:?:
I have tried isolating the motor with a low pass (50htz) filter to get rid of EMF feedback down the powerline thru to the sensors, which improves things BUT the problem still persists.
It is as if when the motor is switched off this momentarily starves the sensor of power?? Or could it be a Voltage Reflection caused by some mismatch in impedence between the motor and its power cable ??? (researched this somewhat and found it happens with AC motors) ?? Would be grateful for any suggestions of a cure. Or in particular if it is Voltage Reflection how best can this be remedied - using a diode perhaps ????
:?: