Aren’t you better of with something like this?
https://www.ebay.com/itm/124669618450?epid=665965585&hash=item1d06e36912:g:D5wAAOSwpF5gbHju&amdata=enc%3AAQAIAAAA4GX05uSdd0R3ND0MxgwRzdirYg3mpxpQI6A4RKrHy2tv3E2ICEgXskCh2ZllTGpuuIb306wddqB5faO%2Bu4pyJKoNHBm%2FHpBOgpN7%2BaDMbn9hO1NMko1BIRAYXSzd0%2F9sOHUavtnGv0u2XDMRGl%2B56appzxIgV5jAaN1Xg8aDMrA9iiGZw3eqCTHhyptMzzegBfj61cgCAewfYh8gqifioapgdBzC3X3wvha92zow85hUU2xV%2FRBhfLcPeScGc0m%2FPcgbJPNgIu4jIg4Cnt5n0CzugseO4xLq9V8DUbkO2TCd%7Ctkp%3ABk9SR_quxqaxYw
As per lengthy discussion, my source (would feed whatever circuit or module I use) is a variable DC voltage. There is no AC input to be had...