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In the field of industrial automation, electromagnetic interference (EMI) is one of the main factors affecting production efficiency and equipment life.

High&Low's EMI filters, which comply with international standards such as UL, effectively suppress high - frequency interference from motor drivers, PLCs, and frequency converters, ensuring the accuracy of signal control. They are suitable for high - precision scenarios such as industrial automation and electronic production lines and provide reliable EMI solutions for intelligent manufacturing in Industry 4.0.



Fields: Elevators, Cranes, CNC, Robotic Arms, Frequency Converters, Servo Motors, Conveyor Belts, Industrial Air - conditioners

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Basic Requirements of EMP/HEMP Filters and Protection Standards

2025-10-16
1. Background and Protection Requirements   The majority of EMP/HEMP protection studies and standards are based on research from the mid-20th century, initially focused on power grid maintenance. W...

How to Choose an EMI Filter? What Parameters Should You Consider?

2025-08-27
1. Basic Parameters   • Rated Voltage (V): Must be greater than or equal to the maximum operating voltage of the equipment. For example, a 220V system requires a filter with a rated voltage of at l...

Key Considerations in EMI Filter Selection

2025-03-17
1. Electrical and Operational ParametersThe first step in choosing the right EMI filter is understanding the electrical and operating conditions of the system. Several crucial parameters should be ...

Filter Design-Insertion Loss ​

2025-03-11
Filters are almost always a part of anelectronics design. Design engineersdesign a filter to achieve certainattenuation in a specified frequencyrange. We have seen that with inductivecomponents, th...

How to choose an EMI Filter?

2025-03-05
When selecting an EMI filter, several factors must be considered to ensure optimal performance. First, the frequency range of the filter should align with the frequency range of the interference yo...

Capacitor Application Essentials Note 1

2025-03-04
2.1. Multiple capacitors of the same specification are used in parallelIf the ripple voltage tolerance of a single capacitor is not enough, multiple capacitors can be used in parallel, and the numb...

Key points of PCB design for chip decoupling or bypass capacitors

2025-02-26
Single-point confluence solves common impedance coupling:Figure 17: Single-point convergence solves common-impedance coupling when different power supply pins share filter capacitorsIn the low-cost...

Categorization of EMl Filters(2)

2025-02-26
Application Specific FiltersIn electronic systems, electromagnetic interference (EMI) can significantly disrupt signal integrity and device performance. To address these challenges, specialized fil...

Categorization of EMI Filters

2025-02-19
Active or Passive EMI FiltersElectromagnetic interference (EMI) poses significant challenges to electronic devices, often leading to degraded performance or malfunctioning. EMI filters are essentia...

What are the Applications of EMI Filters?

2025-02-12
EMI filters have a wide range of applications across different industries and electronic systems, each designed to enhance performance and reliability by reducing electromagnetic interference. One ...

Capacitive and inductive regions of capacitance

2024-12-18
The low frequency range is very close to the ideal capacitor, and the impedance is inversely proportional to the frequency, and this region is called the capacitive region. With the change of frequ...

What is capacitance（1）

2024-12-06
Any two conductors that are insulated from each other and close to each other can form a capacitor. Capacitance is a physical quantity that characterizes a capacitor's ability to hold an electric c...
Filter

Parasitic inductance（2）The effects of parasitic inductance

2024-12-02
The root cause of many EMC problems is the parasitic inductance, which is as ubiquitous as parasitic capacitance, and very hidden, and most of them cannot be measured by instruments and equipment, ...

Key parameters needed to consider while selecting the filter

2024-11-28
The EMI/EMC filters come in various types, designs, shapes, and configurations. Here are the key specification parameters to consider while selecting an EMI/EMC filter.Type: It represents the type ...
Filter

What is Active EMI filters?

2024-11-25
An active EMI filter uses active electronic components such as transistors, operational amplifiers, voltage converters, etc., in conjunction with passive components to suppress conducted EMI in the...
Filter

Benefits of EMI Filters

2024-11-21
Protects electrical and electronic devices/equipment from conducted EMI on power as well as signal lines, ensuring the smooth and uninterrupted operation of the equipment.It prevents conducted EMI ...

what is passive filter?

2024-11-20
The passive filter circuit uses passive components such as inductors, capacitors, and resistors to suppress the conducted EMI in an electronic circuit.A simple passive EMI filter is designed with L...
Filter

What is electromagnetic interference (EMI)?

2024-11-19
Electromagnetic interference (EMI) is the generation of electromagnetic interference (EMI) from man-made sources (such as electrical and electronic equipment) or natural sources (such as lightning,...

Parasitic inductance （1） The main form of parasitic inductance exists

2024-11-18
Parasitic inductance (1) The main form of parasitic inductance existsParasitic inductance refers to the inductance that is parasitic on the PCB traces or other components of a circuit board. Where ...

The concept of an EMI filter

2024-11-18
An EMI filter (Electromagnetic interference filter) is an electrical device or circuit used to suppress or filter out high-fr­equency noise current present on power and signal lines, i.e., it suppr...
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