The cause of abnormal noise caused by the loop problem of the high-frequency transformer

2019-05-08 11:49:45 JUKE CHINA ODM OEM Transformer factory Read

The cause of abnormal noise caused by the loop problem of the high-frequency transformer

The loop problem of the High frequency transformer will cause abnormal noise of the high-frequency transformer, and the loop problem of the high-frequency transformer means that the loop of the high-frequency transformer oscillates and causes the high-frequency transformer to whistle. What caused this?
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1. The circuit board is improperly wired, causing interference to cause oscillation and causing noise;

2. The feedback loop parameters are set incorrectly, causing the loop to be unstable and causing oscillations to make a sound;

3. The quality of the components in the loop, such as the insufficient capacity of the input filter capacitor, the quality of the output rectification fast recovery diode is not good, the quality of the power MOS tube is not good, the high voltage capacitance of the RCD recoil absorption loop or the quality of the diode is not good, etc. These problems can cause shocks and cause noise.