Bobbin supplier tells you the Chinese name of transformer skeleton is Bobbin, also known as transformer skeleton or transformer line frame. The English name of the transformer skeleton is Bobbin, it is the main structure of the transformer, electronic transformers in today's society is widely used, the corresponding body is also indispensable, so the skeleton has an irreplaceable role!

Bobbin supplier tells you that the skeleton plays the following roles in the transformer:

1. to provide winding space for the copper wire in the transformer.

2. To fix the core in the transformer.

3. The wire slots in the skeleton provide a path for the transformer windings during production.

4. The metal pins in the frame are the pillars for the transformer copper wire winding; soldered and connected to the PCB board, the transformer conducts electricity during operation.

5. Bumps, pits or chamfers in the skeleton can determine the direction of placement or pin order when the transformer is in use.

6. The retaining wall at the bottom of the skeleton can fix the transformer and the PCB board; provide a certain distance between the tin stack and the PCB and between the core and the PCB during the soldering process; isolate the core and the tin stack to avoid withstanding voltage differences.

7. When using transformers, the bumps, dips or chamfers in the skeleton can determine the placement direction or pin order.

Transformer skeleton classification

The skeleton supplier tells you that frames are generally classified according to the type of core (or iron core) used in transformers, including EI, EE, EF, EPC, ER, RM, PQ, UU and other models. Each model can be distinguished according to the size of the core (or iron core), such as EE5, EE8, EE13, EE19 and other models of different sizes. The skeleton is divided into two types according to the shape: vertical and horizontal; according to the working frequency of the transformer, it can be divided into two types: high frequency skeleton and low frequency skeleton. The frequency mentioned here does not refer to the number of times used, but to the number of times the transformer changes periodically during operation. The unit is Hz, abbreviated as Hz. it is also commonly used in kHz, MHz or GHz; according to the nature of the use of the skeleton, it can be divided into two types: direct insertion skeleton (DIP) and SMD skeleton (SMD).

Skeleton suppliers tell you that it is because the skeleton has so many characteristics that its shape can be described as constantly changing. For the same skeleton, for example, the EE-13 direct insertion bakelite skeleton has been so finely classified that its viper skeleton reaches 36 types. Some retaining walls are of different heights, some winding slots are of different sizes. Even for the more important and critical dimensions, PIN distances and row distances are different. This creates many difficulties for the supply and demand of the skeleton. If the dimensions are slightly different, it is not possible to use the existing molds. Simple ones need to be matched with a part of the newly opened die, and complex ones need to be reopened. The production cost of transformers increases considerably. In the industry, transformer factories have been unable to receive orders due to a lack of suitable molds. There is a consensus among many transformer factory friends that of all the components of a transformer, the skeleton is the more difficult to find. As for the skeleton factory, it has developed many sets of molds because there are no orders left on the shelf, but the unknown is that some transformer factories have abandoned their orders because they cannot find molds for this product.