EI is used lamination for transformer. It is a type of electronic transformer when it is used. It is defined according to the shape of the core, mainly because the core of the EI transformer is superimposed by the "E" type and the "I" type. Therefore, it is called an EI transformer. EI transformers are generally power frequency (low frequency) transformers (50HZ or 60HZ), power transformers, and some audio transformers are also EI, such as audio.
EI classification for lamination for transformer
Classified by installation method
It is divided into pin type and lead type riding type. The pin type is soldered on the circuit board. The lead type is external lead wire. Most of them are iron shells on the outside, and the iron shell has mounting holes, which can be screwed.
Classified according to core size
EI transformers are categorized by size, and the general category is classified according to the length of the silicon steel sheet. For example, commonly used EI-19, EI-28, EI-35, EI-41, EI-48, EI-57, EI-66, EI-76.2, EI-86, EI-96, EI-114 and so on. Among them, 28, 35, and 41 refer to the length of the silicon steel sheet.
EI is used for the detailed classification of transformers. The total stack thickness of silicon steel sheets should also be considered. Some transformers are marked with EI-48*20. This 20 means that the total stack thickness of silicon steel sheets is 20mm, so this transformer is EI-48. Subdivided is EI-48*20.