pwilkinson
New Member
I'm looking to build a soft motor starter. Currently I'm using a 40 amp relay, but upon start up I have a serious power drain issues. I've seen a couple of designs using resistors, mosfet, and capacitor. I know this only lowers the voltage the motor is receiving, which ramps up until the capacitor is charged then runs at full power. The other is using PWM which is the way I would rather go. I understand how it works for a variable speed. How to make it work so it ramps from 0-100% power over a period of about 5 seconds? Any help would be apprecieated. Also, I'm a electronics rookie.