I tried the circuit , but it did not work as i want ....
The comparator circuit works fine with the set point of potentiometer , however, if i connect the OP / AMP 337 , the coil is energized as soon as switch on the circuit .....and it can not be controlled with the pot.
notice that the LED still showing that it varies proportionally with the pot.
How can I control the energization of the coil with my pot.?????
See the attached picture , it shows the connection of my circuit ....
Please help me ASAP