Toroidal chokes for dimmer noise suppression white label 31h32 23 00 a 22mh toroidal choke that has an iron powder core that provides the permeability and magnetic saturation characteristics required for effective noise suppression suitable for use in filter chokes for thyristor and triac circuits light dimmers rotation speed adjusters etc white label 31h32 23 00 toroidal chokes inductivity 22 mh 250 vac 23 a