Because the power transformer structure is complicated, many electronic devices, and printed circuit boards are gathered, the design scheme will cause noise for various reasons. The common causes of noise are as follows: the pressure relief peak caused by the shock is also transmitted to the output end, creating noise during the whole process of kinetic energy transmission. In order to better deal with this problem, we generally use RC, RCD and other digestion and absorption power circuits, and energy-saving absorption capacitors usually use high-voltage porcelain capacitor.

Noise is generated by certain mechanisms of the transformer, including: the attraction between the two parts of the magnetic core moves due to relative motion, which compresses the medium separating them; In addition, the impact causes the surface of the two magnetic cores to contact, and their movement in response to the magnetic flux excitation will cause them to collide or chafe; The middle legs of the core also have cracks caused by bending, which can make the various parts of the core move in the direction of attraction between them; The noise produced by these institutions depends on their different locations.

Of course, there are solutions to the transformer noise problem. First of all, the transformer should be soaked evenly, which can effectively fill the inherent gap between the coil, the coil and the skeleton, and the skeleton and the magnetic core, reducing the possibility of displacement of moving parts. The contact surface between the magnetic component and the circuit board can be filled with the electronic and electrical industry bonding sealing glue or coated with thick film sharpening coating conformal coating to further reduce the space of mechanical vibration and effectively reduce noise. For instructions on the use of electronic glue and tri-resistant paint, contact Sharpening application engineers.