I recently bought a Scr Voltage Regulator (10000w Ac110v 220v 75a) to act as a motor controller for a hobby project (Figure 1). After taking it apart, I found the Voltage Regulator is controlled by a 220k Ohm 2W Potentiometer (Figure 2).
I'd like to replace the mechanical Potentiometer with a component I can control with a microcontroller. I found the ADN2850 However, this seems like it can only support 1 W.
- Is there another type of chip on the market I should be looking at?
- How would I build a circuit that allows me to use a smaller control current to regulate the speed regulator?