How the button box works (2)

     For the start button, when the button cap is pressed, the contact will be closed, and when it is released, the contact will be automatically disconnected and reset. On the contrary, when the button cap is pressed, the contact will separate, and when released, the contact will close and reset automatically. When the button cap is pressed down, the bridge moving contact moves downward, so that the normally closed contact is first disconnected, and then the normally open contact is closed; when the button cap is released, the normally closed contact is closed and reset first, and then the normally open contact is broken and reset.

    To put it bluntly, the working principle of the button box is: there is an electromagnet adsorption device inside. When you press the button down, the electromagnet inside will be charged to produce magnetism, and then the circuit will be connected or disconnected through this adsorption device, so as to realize the remote control of the circuit.