Electronic variable speed controllers for electric motors, thyristor controlled converters, rectifiers, electronic frequency inverters, soft starters being electronic controllers for electric motors, electronic single and four quadrant converters, electronic circuit boards, electronic components in this class, electronic uninterruptable power supplies

Electronic variable speed controllers for electric motors, thyristor controlled converters, electronic frequency inverters being motor controllers, soft starters being electronic controllers for electric motors, electronic single and four quadrant converters