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Hefei Hemei Electronics Technology

HEMEI is a leading manufacturer of electromagnetic signal coupling, the domestic designer and manufacturer of magnetoelectric power conversion technology, has been committed to promoting the progress of signal coupling technology and passive power technology. The main products are magnetic coupling amplifiers, wave traps, power carrier signal coupling transformers, permalloy cores, electromagnetic loop coils, CT power supply, open and close current transformers and other products. 
222020.12
The principle, type, accuracy and type selection of current transformer

Current transformer is an important secondary device in the power system. It is widely used in secondary circuits such as metering, measurement, and relay protection. In large current or high voltage occasions, we cannot directly use an ammeter to measure the current of the circuit. It can be measur

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092020.12
Electromagnetic Coupling Mechanism

With the continuous development of science and technology and the continuous expansion of human activities, microelectronics and computer technologies have been applied to all aspects of social life. A large number of electrical and electronic products with high technical content and complex interna

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032020.12
How Much Do You Know About These Five Current Transformers

The current transformer has the function of current conversion and electrical isolation. It is a sensor for secondary equipment such as measuring instruments and relay protection in the power system to obtain current information of the electrical primary circuit. The structure of a current transform

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012020.12
Permalloy

Permalloy often refers to iron-nickel alloys with a nickel content in the range of 30 to 90%. It is a very widely used soft magnetic alloy. Through appropriate technology, magnetic properties can be effectively controlled, such as initial permeability exceeding 105, maximum permeability exceeding 10

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272020.11
What Are Ferromagnetic Materials?

Materials with strong magnetic permeability, such as silicon steel, cast steel, permalloy, etc., are called ferromagnetic materials. Ferromagnetic materials have the following three basic characteristics. First, the permeability is not constant, but decreases with the increase of magnetic induction.

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142020.11
CT Power Supply

This power suply CT device is our newly developed product,which is used on 100v-220kv AC transmission line.

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HEMEI is a leading manufacturer of electromagnetic signal coupling, has been committed to promoting the progress of signal coupling technology and passive power technology. 

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