This set of primary and secondary coils along with the iron core is an educational/ demonstration model for studying the Lenz law and electromagnetism. This large version is suitable for laboratories, classrooms and individual researchers. Use this model to study the relation of current, magnetic field and other experiments related to electromagnetism and transformers.
To be used in laboratories for research and study the law of Lenz, And the relation of current and magnetic field.
The model is for demonstration, They include original(primary)windings、sub(secondary) windings、iron.
Primary windings: inside diameter φ13 ± 0.5 mm, outside diameterφ22 ± 1 mm
φ0.59mm x 400 turns (400 turns of magnet wire gauge 23)
Secondary windings: inside diameter φ35 ± 1 mm, outside diameterφ49 ± 1 mm
φ0.27mm x 1150 turns (1150 turns of magnet wire gauge 30)
1. The secondary coil connect a galvanometer, The primary coil connect a power supply, The output voltage of power supply is DC 6-8V, put the primary coli into then pull up from the secondary coil，view the change of galvanometer at same time.
2. View the change of galvanometer when current of primary coil turn on and off.