Switch-Mode Power Supply (SMPS) technology has enabled a high level of efficiency of power conversion for electronic devices. However, to ensure proper operation, it’s important to set up and perform a conducted emissions test. In this article, find out how.
Emissions testing is used to ensure that an electronic product’s EMI emissions don’t interfere with other products around it. In an emissions test, a Line Impedance Stabilization Network (LISN) must be used. This ensures that the source impedance matches that of the spectrum analyzer and allows for an accurate test. During the test, both the product being tested and the test equipment itself are isolated, then the test commences. Depending on the outcome of the test, the product could be compliant with one of a few different emissions standards - CISPR 22 (for information technology equipment), CISPR 25 (for automotive), etc.
To find out more about conducted emissions testing and to understand specific protocols for testing push-pull transformers such as those from Bourns, click through to the article.