Analysis of the Quality of Common Mode Inductor Materials 2

Compared to UF, there is not much advantage in terms of voltage resistance: I came up with my own idea because I have seen many magnetic ring common mode circuits separated by cable ties, which is not very reliable. Some circuits are separated by a certain distance and fixed with glue. Over time, how reliable is it? If the inductance requirement is relatively large, the wires will be squeezed together, which raises some safety concerns.

Inconvenient installation and high failure rate - Sharing from audiophiles: "Generally, the performance is the same, but the magnetic ring with the same wire diameter has higher sensitivity than UF10.5, which is easy to implement. When testing conduction, it is better to encounter UF10.5 with the same sensitivity, with a difference of about 5 DBs! If the magnetic ring looks like an age picture, it is relatively cheap, but it is difficult to plug in and has a higher risk of failure. If a base is added, it won't be cheap, it's more expensive than UF10.5  diode

Application:

Due to cost factors, magnetic rings are mostly used in high-power power supplies. Enthusiasts describe it as' using magnetic rings for low-power applications is too high-end ', which makes sense.

Of course, due to its small size, low-power power supplies with volume requirements are also a good choice to use magnetic rings.  diode,

Compared to UF series, it has better overall performance. If there is not much cost pressure on the project, magnetic rings can be considered. I actually tested and found that the margin for using magnetic rings is much lower. And the sensitivity is also smaller than UF's.

Let's talk about the common mode of UF/UU seriesdiode

Material: Basically ferrite, of course, this ferrite also has differences, generally MXO manganese zinc and NXO nickel zinc. The main advantage of nickel zinc materials is that they have a low initial magnetic permeability (less than 1000u), but can operate at relatively high frequencies (greater than 100MHZ. html "target=" -blank "title=" 100MHz ">100MHz) while maintaining the same magnetic permeability. Very strong and great.