About the solenoid
In physics, the term solenoid refers to multiple winding wires, which can be hollow inside or have a metal core. When a current passes through a conductor, a uniform magnetic field is generated inside the solenoid. The solenoid is a very important element. The correct operation of many physical experiments requires a uniform magnetic field. The solenoid can also be used as an electromagnet or inductor.
In engineering, a solenoid is also referred to as a transducer, which converts energy into linear motion. The solenoid operated valve (solenoid valve) is an integrated original, and the most important component is the electromechanical solenoid. The electromechanical solenoid is an electromechanical source that can be used to operate pneumatic control valves or hydraulic valves. Solenoid switch is a kind of relay, which uses electromechanical solenoid to operate electric switches. For example, the starter solenoid of an automobile is an electromechanical solenoid.