High frequency transformer is a power transformer whose working frequency exceeds medium frequency (10kHz). It is mainly used as high frequency switching power transformer in high frequency switching power supply, and also used as high frequency inverter power transformer in high frequency inverter power supply and high frequency inverter welding machine. There are many kinds of high-frequency transformer skeletons, such as EE, EF, EFD and PQ. To say that its specifications are more common, such as 5+5pin, 6+6pin, etc.

The application of high frequency transformer skeleton is very extensive. Transformers are used in virtually all electronic products. They are simple in principle but require different winding techniques for different applications. How to deal with the short circuit of transformer skeleton? What should be considered first when facing problems?

First, transformer parts short-circuit incident after the test, experiment. When the transformer skeleton suffers from sudden short circuit, the low-voltage winding and balance winding are the most prone to deformation, followed by high-voltage winding, iron core and clamps. Therefore, the transformer skeleton after the short-circuit end of the inspection is mainly to look at the windings, iron cores, clamps and other parts.

First, winding inspection and experiment.

Because the transformer skeleton short-circuit, in the power effect, the winding suffered pressure, tension, bending and other forces together, the formation of the fault concealment is strong, is not easy to see and correct, so the short-circuit fault should be checked after the main points of the winding.

Two. Core and clip view.

The core of transformer skeleton should have mechanical strength. The mechanical strength of the iron core is ensured by the strength of all the clamping parts on the core and its connecting parts. When the electric force occurs in the winding, the axial force of the winding will be counteracted by the counterforce of the clamp. If the strength of the clamp and the tension plate is less than the axial force, the clamp, the tension plate and the winding will be damaged.

Therefore, we should carefully inspect the core, clip, drawing plate and its connections. Transformer skeleton is to change the communication voltage, current and impedance of the equipment, when the primary coil with the communication current, the iron core (or magnetic core) will occur in the communication flux, so that the secondary coil induced voltage (or current). The basic principle of transformer skeleton is the principle of electromagnetic induction. Transformer skeleton - An electrical appliance that uses electromagnetic induction to transmit electrical energy from one circuit to another or transmit signals is an important component of electrical energy transmission or signal transmission.