What is high frequency transformer leakage sense
We know that transformer is mainly composed of primary coil, secondary coil and iron core (also called magnetic core). It is a device that USES the principle of electromagnetic induction to change the ac
The magnetic field lines produced by the coil cannot all pass through the secondary coil, so the inductance of magnetic leakage is called leakage inductance. Refers to the part of magnetic flux that is missed in the initial stage of the transformer during the coupling process.
he sense of leakage increases with the working frequency, because the working frequency of the power frequency transformer (the working frequency of the power frequency transformer generally refers to 50HZ or 60HZ); The working frequency of high frequency transformer are generally above 1 KHZ, or even hundreds of KHZ), the working frequency is low, can generally for the influence of the leakage inductance of the negligible, but for high frequency transformer, it is particularly important to reduce the leakage inductance is, now more and more high frequency switch power supply requirements, transformer has become an important indicator to measure the quality of switch power supply, because it is a great influence on performance of switch power supply, because of the leakage inductance of the circuit causes radiation interference, interference noise for the switching power supply, some of the transformer and blocked, but there will be some interference exists.Leakage inductance occurs because some primary (secondary) magnetic flux is not coupled through the core to the secondary (primary), but is returned to the primary (secondary) by air closure.
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