Understanding Resolution in Optical and Magnetic Encoders How the different types of rotary encoders work and what differentiates the performance of the many types available today. Rotary encoders are devices that convert rotary movement or angular position into analogue or digital signals for use within measurement or control systems. They can be classified in a [...]
Comprehensive Guide on Magnetic Encoder A magnetic encoder is an electromechanical device which converts motion into digital signals using a magnetic field. It provides feedback about position, speed, and direction to the controller. In today’s modern world of automation, position accuracy and feedback are important to ensure accuracy and reliability in every performance. This positional [...]
Linear Motor Magnetic Assembly Guide A Linear Motor Magnetic Assembly is an important magnetic component in a permanent magnet linear motor. It usually consists of multiple NdFeB magnets arranged according to a specific magnetic pole arrangement, pole pitch, and magnetization direction. The magnets are assembled with a steel back iron, yoke, or other support structures [...]
Comprehensive Guide to Magnetic Performance Testing Do you know that the performance of your sintered NdFeB magnets can make or break your high tech applications? Learn the latest techniques to get top quality and reliability. Magnetic Performance Standards How do manufacturers guarantee every NdFeB magnet meets the performance standards? What are the new methods to [...]
Magnetic Domains: Understanding the Foundation of Magnetism Magnetic domains are the foundation of magnetism. In this post we’ll dive into the world of magnetic domains, and explore how they form, behave and the processes that determine their impact on magnetic materials. Understanding these will give you a deeper appreciation of how magnetism works in everyday [...]
What is Eddy Current Losses in Permanent Magnet Materials? Understanding and Minimizing Eddy Current Losses in SmCo and NdFeB Magnets Eddy current losses are a significant concern in rotating machinery, especially when using metal-based permanent magnets like Samarium-Cobalt (SmCo) and Neodymium-Iron-Boron (NdFeB). Core losses, which include both eddy current losses and hysteresis losses, must be [...]
What Is Praseodymium? Praseodymium is an element that can also be used for permanent magnetization. Uses for this type of magnet include in electrical motors and machinery in hybrid cars and wind agents. The element is also known for when it is combined with Magnesium to form tough metal designed for the engines in airplanes. [...]
Measuring Magnetic Fields After reading this section you will be able to do the following: Determine how the direction and intensity of magnetic fields can be found. Describe how a field indicator and a Hall-effect meter work. Since it is impractical to measure the actual field strength within the material, all the devices measure the [...]
Circular Magnetic Fields: Distribution and Intensity After reading this section you will be able to do the following: Explain the distribution and intensity of magnetic fields around conductors Explain what the skin effect is As discussed previously, when current is passed through a solid conductor, a magnetic field forms in and around the conductor. The [...]
Longitudinal Magnetic Fields Longitudinal magnetic fields refer to magnetic fields that are oriented parallel to the direction of propagation of a wave or particle. These fields play a crucial role in various scientific and technological applications, including particle accelerators, plasma physics, astrophysics, and magnetic resonance imaging (MRI). In the context of particle accelerators, longitudinal magnetic [...]
Electricity and Magnetism After reading this section you will be able to do the following: Discuss what happens to a compass when a wire with electrical current is near. Describe the relationship between electricity and magnetism. Why does the compass respond when it is near an electrical wire with current flowing through it? We can [...]
Electromagnetic Fields After reading this section you will be able to do the following: Describe the magnetic fields that surround a current carrying conductor. Iron filings scattered in the vacinity of a current carrying wire will reveal a magnetic field perpendicular to the current flow. Magnetic field lines directed out of the page towards the [...]