one of the tips for improving Toroidal Ferrite Core Inductor Q

- Aug 02, 2019-

If want to improving the toroidal ferrite core indcutor, you must select a reasonable shield diameter, 

Shielding is a double-edged sword, which can reduce EMC and other interference, but also increase the loss of the coil and reduce the Q value. Therefore, the size of the shield should not be too small. However, the size of the shield is too large, will increase the volume, so to choose a reasonable size of the shield diameter.
When the ratio of shield diameter Ds to coil diameter D meets the following value, that is, Ds/D = 1.6-2.5, the Q value will be reduced by no more than 10%.

Guangzhou feineng is the toroidal power inductor manufacturers  , free express your opinion to probe into the issue. 

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