1PC Electric Bell Experiment Bell jar Experiment Electromagnetism Physics Experiment Teaching

A transparent organic board is separately arranged: metal bell cover, coil, bending arm, hammer, positive and negative banana plug terminal. A 90*90*23mm plastic bottom plate is diagonally inserted into the lower part of the plexiglass plate. The overall size is about 90*90*187mm. The positive pole is connected with the coil, the coil is connected with the bending arm, the bending arm is connected with the hammer through the elastic sheet, and the hammer connects the negative pole to form a complete loop. When the power of DC3-6V is connected, the coil generates magnetism and attracts the bent arm. The bell hammer on the bent arm strikes the bell cover. At this time, the bent arm is separated from the hammer, the circuit is disconnected, the magnetism of the coil disappears, and the bent arm returns to its original state. It is connected with the hammer to connect the circuit. This cycle repeats, forming an uninterrupted ringtone.