Hello everyone, this isn't my usual kind of forum but my latest hobby project has turned into quite the rabbit hole. Long story short, I have a transformer that is functioning properly and steps the voltage down from 120 Volts to 18 Volts AC. I need to find an AC motor control circuit that can be used to regulate the voltage at the track to control the speed of the trains. I can only find stock AC motor controllers that have a working voltage of 110 Volts. Does anyone know of a way to have AC voltage regulation at lower voltages? I have found schematics on the internet for these types of the motor controllers but the DIACs used in these circuits only trigger at 30 Volts. Thanks for the help, I am curious to see if this can be done.