An electromagnet is a device that produces a magnetic field, which is possible due to the flow of electric current through it. Electromagnets are used in systems that can both attract and repel, and even move and lift elements made of ferromagnetic metals. Such metals include mainly iron, although sometimes objects of this type are made of nickel or cobalt. Due to the way they influence metal objects we can distinguish between pushing and holding electromagnets. Individual models differ in power and operating voltage. Considering these parameters we should choose electromagnets for a specific project and object. In Botland shop you will find a wide range of electromagnets, which have found their application in mechanical systems and access control systems. They have different sizes and shapes, as well as range of operation. Check our offer and compare individual electromagnets in order to choose the best one.
Electromagnets
Electromagnet holding 12V 3W 20kgf
Holding electromagnet, powered by 12 V. With a standard acceleration due to gravity of 9.8 m/s 2 it supports a mass of 20 kg . The current consumption during operation of...- Reduced price
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Electromagnet holding 12V 3,5W 25kgf
Holding electromagnet, powered by 12 V. With a standard acceleration due to gravity of 9.8 m/s 2 it supports a mass of 25 kg . The device's current consumption is 300 mA,...- Reduced price
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Electromagnet holding 12V 6W 60kgf
Holding electromagnet with a rated power of 6 W. It requires a voltage pulse of 12 V to operate. With a standard acceleration due to gravity of 9.8 m/s 2, the maximum...Electromagnet holding 12V 1W 80mA 1kgf
Holding electromagnet, powered by 12 V. With standard acceleration due to gravity (9.82 m/s 2 ) it maintains a mass of 1 kg . Current consumption is approx. 80 mA, rated...Electromagnet pushing 12V 0,2kg 11mm
The pushing solenoid is powered by 12 V and can push out a mass of 0.2 kg with a standard earth acceleration of 9.8 m/s2. The diameter of the housing is 11 mm, while the...Electromagnet holding 12V 2W 5kgf
Holding electromagnet with a maximum load capacity of 5 kg (at standard gravitational acceleration of 9.8 m/s 2 ). Powered by 12 V. Current consumption is...Electromagnet holding 12V 6W 55kgf
Holding electromagnet with a rated power of 6 W. Powered by 12 V. Current consumption is approximately 500 mA. The device maintains a mass of 55 kg under standard...Electromagnet holding 12V 4W 30kgf
Powered by 12 V , the holding electromagnet holds a mass of 30 kg at a standard acceleration due to gravity of 9.8 m/s 2 . The rated power of the device is 4 W and the...- Reduced price
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Electromagnet holding 12V 1W 3kgf
A holding electromagnet, which, when given a voltage pulse of 12 V , maintains a mass of 3 kg (at standard ground acceleration of 9.8 m/s2). The device takes about 170 mA,...Pulling electromagnet 12V 7,2W 0,8kg
An electromagnet which, under the influence of supplying a voltage of 12 V to the coil, performs a linear - pulling motion . The device draws about 0.6 A current. The range...Electromagnet pulling 12V 0.4kg
The device allows to perform a linear - pulling motion with a voltage signal of 12 V. The range of the bolt is approximately 10 mm.- Reduced price
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Electromagnet holding 12V 3W 15kgf
Powered by 12 V , a holding electromagnet that holds a mass of 15 kg under standard acceleration due to gravity (9.8 m/s 2 ). Current consumption during operation is...Pulling electromagnet 12V 14,4W 3,5kg
Tractive solenoid, which requires a voltage of 12 V to operate correctly on the coil. The device, performing linear motion, draws about 1.2 A current. The range of the pin...Electromagnet holding 12V 1W 1kgf
A holding electromagnet which, after applying a voltage pulse of 12 V , maintains a mass of 1 kg (at standard gravitational acceleration of 9.8 m/s 2 ). The current...- Reduced price
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Electromagnet holding 12V 3,5W 30kgf
Holding electromagnet with a rated power of 3.5 W. Powered by 12 V. Current consumption is approximately 300 mA. The device maintains a mass of 30 kg under standard...Electromagnet holding 12V 2W 8kgf
The holding electromagnet is powered by 12 V. The rated power is 2 W. The maximum load capacity of the magnet is 8 kg with a standard gravitational acceleration of 9.8 m/s...Solenoid, coil, 5V electromagnet - SparkFun ROB-11015
The device allows to perform a linear movement, for example, pulling or pushing, using the voltage signal of 5 V. The range of the bolt is approximately 4.5 mm.Electromagnet holding 12V 13W 120kgf
Powered by 12 V holding electromagnet, with a maximum load capacity of 120 kg (at standard gravitational acceleration of 9.8 m/s 2 ). The device consumes approximately...Electromagnet holding 12V 15W 240kgf
Holding electromagnet with a maximum load capacity of 240 kg (at standard gravitational acceleration of 9.8 m/s 2 ). Powered by 12 V. Current consumption is approximately...Pulling electromagnet 12V 0,6kg
Electromagnet, which after giving a voltage signal of 12 V , allows for linear motion - pulling. The range of the device's pin is 10 mm and its maximum load capacity is 0.6...Electromagnet pushing 12V 2kg 25mm
The pushing electromagnet is powered by 12 V , it can push out a mass of 2 kg with a standard earth acceleration of 9.8 m/s2. The housing diameter is 25 mm and the bolt...What is an electromagnet and how does it work?
Electromagnets produce a magnetic field. They are usually in the form of a coil, which is deposited on a core made of material with very high magnetic properties. As a result of the flow of electric current through the coil, a magnetic current is produced. It is this current that is responsible for magnetizing the core and amplifying it. The core is demagnetized when the current stops flowing. Then the electromagnet ceases to be the source of the magnetic field.
The electromagnet has the shape of a coil, in the middle there is a core made of ferromagnetics. It is usually made of steel, which is very good for magnetization. In the case of AC electromagnets, the core is made of metal sheets, which are isolated from each other by a special insulating material in order to reduce energy losses. In order to disperse the magnetic flux, electromagnets are often given a horseshoe shape.
The magnetic field produced by an electromagnet covers a similar area to that which is characteristic of a typical bar magnet. The field can be reinforced by winding a wire around an iron core. It must be 'soft', which means that it does not have the capacity to store a magnetic field. It is magnetized only after electric current has passed through it.
Use of electromagnets
With electromagnets, the magnetic field can be changed quickly. This is possible by controlling the amount of electric current in the winding. However, an electromagnet requires a constant current supply, only then can it maintain the magnetic field. Electromagnets are supplied with different voltages and thus consume different current. There are modules integrated with control electronics, which is an option especially recommended for beginners who plan to implement the electromagnet in an electronic system. The frequent use of electromagnets includes access control systems. We then use holding electromagnets which hold the door to prevent it from opening. And how do we open such doors? The electronic system receives an appropriate signal from the lock control system, which is a card reader or code keypad. The solenoid coil is de-energized, which means that it no longer attracts the metal plate to the door and can be successfully opened. Due to such properties of electromagnets they are used in access control systems.
Furthermore, they work well in many other electronic projects. They are present in electrical machines, bells, speakers and relays. Electromagnets are also used in alarm systems, which are one of the security features of the building and its surroundings, and are part of monitoring. They can also be found in cathode ray tubes and magnetic railways and devices that use nuclear magnetic resonance.