Home » English riddles » Power Electronic » Power Electronic Riddle No.2 – Speed control of universal motor using scr » Reply To: Power Electronic Riddle No.2 – Speed control of universal motor using scr Reply To: Power Electronic Riddle No.2 – Speed control of universal motor using scr 2021-08-03 at 11:08 am #3083 kasem saingarm ckt for ac universal motor control using scr