... for choke coil,ferrite choke coil,high current choke coil,helmholtz coil 1.features: ER2806 for choke coil,ferrite choke coil,high current choke coil,helmholtz coil 2.advantage ... in the linear filter ,current tranformer,smoothing choke coil,drive transformer•RM core core: filters, inductors ... low temperature rise Work steadily in big electrical current Vertical and horizontal installation applied in ...