conchunchun
Junior Member level 3
https://www.allaboutcircuits.com/vol_6/chpt_3/8.html
By referring to the link above, I find out the way to design the precision rheostat. I have designed a dc motor controller which has zero crossing detector+ triggering circuit for my scr to run my dc motor. I change the speed of my motor by adjusting the rheostat at zero crossing detector. May I noe is it possible that by replacing the rheostat part of my circuit with precision rheostat will increase my dc motor speed controller precision?
If so may I ask how to calculate the 3 rheostat value if my existing rheostat is 5K one. Thanks
By referring to the link above, I find out the way to design the precision rheostat. I have designed a dc motor controller which has zero crossing detector+ triggering circuit for my scr to run my dc motor. I change the speed of my motor by adjusting the rheostat at zero crossing detector. May I noe is it possible that by replacing the rheostat part of my circuit with precision rheostat will increase my dc motor speed controller precision?
If so may I ask how to calculate the 3 rheostat value if my existing rheostat is 5K one. Thanks