I am a hobbyist and am looking to solve a specific problem. I need the ability to convert variable DC ( 0-20v) to the equivalent AC voltage. I have been researching ardinuo spwm to convert the DC to AC. I am thinking about using a 1:1 CT transformer to complete the link but can't find one so may have to wind it myself and adjust as necessary. My real questions are will the DC circuits even work until a minimum of ~6V is being supplied? Not really sure if there are some better ways to do what I am trying to achieve. Any help/guidance would be appreciated.