Introduction to the skeleton of high frequency transformer

The production of high-frequency transformers must first have a suitable skeleton. Xiaobian today introduces the skeleton of the high-frequency transformer.

(1) Role:

As the name suggests, BOBBIN (skeleton) acts as a COIL (coil) in the transformer.

(2) Classification:

1. According to the nature requirements of the transformer, according to the material is divided into: thermoplastic materials, thermosetting materials.

Thermoplastic materials We commonly use nylon (NYLON), plastic (PET), plastic (PBT) three. Thermosetting materials we often use bakelite (PM).

According to the shape of the transformer, BOBBIN is divided into vertical, horizontal, sub-mother, drawer, cell, double grid.

High frequency transformer

(3) Characteristics and uses:

1. Bakelite (PM): thermosetting material, high stability, not easy to deform, temperature resistance 150°C, can withstand 370°C high temperature. Surface is smooth, brittle, can not be recycled. For transformers with high temperature resistance.

2. Nylon (NYLON): thermoplastic material, engineering plastic, good ductility, non-fragile, temperature resistance 115°C, easy to absorb water, use 80°C temperature to bake before use, to make the solid stable. Smooth surface, translucent, Not easy to break. Generally used on transformers with strong oil resistance.

3. Plastic (PET): thermoplastic material, high hardness, easy to form. Not easy to deform, temperature resistance 170°C, surface is not smooth, not easy to break, generally used for bobbins.

4. Plastic (PBT): thermoplastic material, soft, not easy to deform, not resistant to high temperature (160°C), the surface is not smooth, not easy to break, generally used for the bobbin.

* Thermoplastic materials can be recycled: 20% for the first time, 15% for the second time, and 7% for the third time.