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Transformer skeleton-action
1 provide winding space for copper wire in transformer
2 fix the magnetic core in the transformer.
3. The trunking in the skeleton provides a path for the transformer to pass through when winding.
4. The metal pins in the skeleton are the pillars wound by copper wires of transformers; After soldering, it is connected to the PCB board, which plays a conductive role when the transformer works.
The retaining wall at the bottom of the skeleton can fix the transformer and PCB board; Provide a certain distance space for the tin stack and PCB board, and the magnetic core and PCB board generated during soldering; Isolate the magnetic core from the tin stack to avoid bad withstand voltage.
6 convex points, concave points or chamfers in the skeleton can determine the placement direction or pin sequence of the transformer when in use.
Transformer skeleton-classification
Frames are generally classified according to the types of magnetic cores (or cores) used in transformers, including EI, EE, EF, EPC, ER, RM, PQ, UU, etc., and each type can be distinguished according to the sizes of magnetic cores (or cores), such as EE5, EE8, EE13, EE19, etc. According to the shape, the skeleton is divided into two types: vertical and horizontal; According to the working frequency of the transformer, it is divided into two types: high-frequency skeleton and low-frequency skeleton. The frequency mentioned here does not refer to the frequency of use, but refers to the frequency of periodic changes of the transformer when working. The unit is Hertz (Hz), referred to as Hertz for short, and it is also commonly used in kilohertz (kHz), megahertz (MHz) or GHz; According to the nature of stitch use, it can be divided into traditional skeleton (DIP) and SMD.