Induction Kit - Student Build Kit                                                                                                              Build a transformer, electric induction motor, simple motor, Thompson's Ring, Eddy currents. An excellent versatile resource. Great value! Everything you need to study electrical induction, magnetic fields, electromagnets, motors, AC/DC motors, basic transformers, series and parallel transformers and many more. Features snap together frames for laminated or solid core transformer frames, motor mounts, field coils and Thompson ring experiments. Fitted case and instructions You need 12 volt power supply and multimeter.