THE SOLENOID: HOW IT WORKS, HOW IT'S USED

The Solenoid or Electromagnet is a temporary magnet in which the magnetic field is produced by an electric current. This field lasts until the current flows and ends once the current stops. The most simple electromagnet shape is the Solenoid that is a circuit fomed by an electrical conductor winded tightly as a coil with a short step. In order to have it performing an action, to the solenoid is joined a magnetic-sensible mobile part, named plunger or nucleum. This plunger is made of iron or steel and while becoming magnetic for induction of the current, moves the magnetic field, thus itself. For example: it is possible to stop the magnetic property or inverting polarity simply using the current (stopping it or changing the stream direction). However, the metal quality of plunger must be calibrated so that id develops enough force to move the magnetic field without retaining unwanted magnetism once the current has stopped. Joining this characteristics to very small dimensions compared to force it generates and very simple construction, ease of use, simple interface and easy fitting in any automation project, plus a virtual maintenance-free life cycle, the solenoid stands as an ideal product for any need requiring movement and on/off mechanisms in almost any automation equipments. Solenoids are generally ued to: Close or keep in position any mechanism or latching device To close or lock switches, stream measure equipments etc. To run electro-valves To select, command, signal, block To lock/unlock doorlocks and security doors (firewalls) Any other application where automation, switching, pushing, pulling, locking is involved