When energized, the linear electromagnet drives the load towards the core. In this sense, the electromagnet is a pulling device. However, if a top rod is installed at the slider section and extended through a hole deep into the core, as it is drawn in, the top rod will extend away from the core to push the external load a specified distance. Thus, the electromagnet can provide both force and tension.
Determining the Direction of an Electromagnet's Magnetic Field
Magnetic Field Direction Determination: According to Ampère's right-hand rule, the direction of the magnetic field generated by a circular current can be determined using the right-hand rule. The method involves bending the four fingers outside the thumb towards the palm to represent the direction of the current; the direction the thumb points to is the north pole of the magnetic field.
Electromagnet Terminology
Power: The thrust or pull, as well as the attractive force, generated by the coil of an electromagnet when an electric current passes through it.
2. Traverse: the distance from the starting point of the zip line to the stopping position.
3. Retention Force: The pulling or pushing force at the end of the slider's stroke.
4. Work Cycle: The ratio of the sum of on-time and off-time to the total time.
5. Continuous Power-On: 100 operating cycles
6. Intermittent Work Cycle: For work cycles less than 100, it has a longer allowed power-on time to prevent the temperature from exceeding the safe limit.
7. Remanence: The magnetic force remaining in an electromagnet after it is de-energized.
8. Higher Operating Temperature for Coils: The higher operating temperature of the coils should not adversely affect the material's structure and function. This temperature is the sum of the ambient temperature and the temperature rise of the coil, typically around 130 degrees Celsius.
9. Turns per ampere: the product of current and the number of turns in the coil.
10 Response Time: The time it takes for the slider to snap into place after being powered on.
