Power solenoids are coils that create magnetic fields when electricity passes through them. They are used in various applications, including electromagnets and pneumatics. They can be rotary or linear and high or low power, depending on their intended use. Stronger solenoids have tighter windings, while weaker ones may have looser windings.
At the most basic level, a power solenoid is a coil through which electricity is passed to create a magnetic field. Solenoids are considered extremely useful and the ability to create controlled magnetic fields is considered the basis of electromechanical applications. They are often integral parts of many commercial and industrial processes. Common varieties can include rotary and linear solenoids. Another major classification of solenoids includes high and low power versions.
Power solenoids are usually a wound wire surrounding a metal core. As energy is applied to and flows through the wire loop, it is subject to certain electrical forces, including Faraday’s law and Ampere’s law. Depending on the amount of loops, wire size, and a multitude of other factors, a power solenoid can be extremely powerful or relatively weak. Stronger solenoids often contain tighter windings, while weaker solenoids may or may not have looser windings.
While there are many applications for solenoids, they are often used to create electromagnets which can then be combined with other mechanisms. Such a solenoid can be used as an automobile starter helping to boost weaker ignition power to full strength. Solenoids are also useful for transferring the forces involved in pneumatics and hydraulics.
To accommodate these many applications, many types of power solenoids are available. Despite this wide variety, most solenoids can be classified as rotary or linear. Rotary solenoids typically contain a rotating ratchet mechanism intended to transfer energy in one rotation; these can be used in machine tools. A linear power solenoid typically transfers energy in a linear pattern, often performing less complex tasks such as those associated with locks or pumps.
In addition to rotary and linear versions, a solenoid can be classified as high or low power. High power solenoid designs typically handle large power currents and many play an important role in energy infrastructure. Another task typically assigned to a high power solenoid is to take a low input signal and transfer it to a higher output. These solenoids will likely have dense coils responsible for creating strong magnetic fields.
Low power solenoids typically require even smaller input signals to produce the desired output. Specifically designed to use low currents, a low power solenoid could be used in safety mechanisms when main power currents are not available. In some operations, a low power solenoid may be used to operate a control valve that does not require much power.
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