Classified according to the installation method
It is divided into pin type, lead saddle clamp type, pin type is on the direct welding circuit board, lead type is external with lead, most of them have an iron shell outside, and the iron shell has mounting holes, which can be screwed.
Classified according to core size
EI transformers are classified according to size, and generally large categories are classified according to the length of silicon steel sheets. For example, EI-19, EI-28, EI-35, EI-41, EI-48, EI-57, EI-66, EI-76.2, EI-86, EI-96, EI-114, etc. Among them, 28, 35, 41 These refer to the length of the silicon steel sheet.
The detailed classification should also consider the total stack thickness of the silicon steel sheet, some transformers are marked with EI-48*20, and this 20 means that the total stack thickness of the silicon steel sheet is 20mm, so this transformer is EI-48, and the subdivision is EI-48*20.
In some places, there is a classification according to the width of the mouth of the silicon steel sheet, the mouth refers to the part that protrudes in the middle of the E sheet, specifically identified A as shown in Figure 1, and some say EI-16 * 20, where 16 refers to the transformer with a width of 16, check the table and know that the width of the EI-48 transformer is 16, so the EI-16 * 20 transformer is the EI-48 * 20 transformer.