Solenoid

A solenoid is a loop of wire, often wrapped around a metallic core, which produces a magnetic field through electromagnetic induction when an electrical current is passed through it. Solenoids are important because they can create controlled magnetic fields and can be used as electromagnets.

Pneumatic solenoids

A pneumatic solenoid is designed much like the piston in an automobile engine. The housing consists of a hollow tube, usually metal, that is capped on either end. Both ends have one or more ports for intake and exhaust. The actuator itself is connected to the piston by a rod that passes through the centre of one end. To stroke the solenoid pressure is applied to one end of the device, while the other end is allowed to vent. To reverse the movement pressure is applied to the opposite side of the piston. Industrial solenoids are capable of applying enormous pressure using relatively low pressure supplies. The larger the diameter of the housing, the greater the force applied to the actuator for a given supply pressure.

Related Topics:
Automobile - Actuator - Piston

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