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  High-Frequency Transformer Market : Introduction High-frequency transformers operate according to the same basic principles as standard transformers The main difference, as the name implies, is that they operate at much higher frequencies. Most line voltage transformers function at 50 or 60 Hz, while high frequency transformers use frequencies from 20 kHz to above 1 MHz. There are many advantages of operating at higher frequencies, one of which is size. The higher the frequency, the smaller the transformer for some power rating.  Furthermore, smaller transformers require less copper wire, reduce losses, and improve transformer efficiency. The core is usually ferrite, and is available in a variety of geometries so that the transformer can suit the application. Ferrite cores may be placed to comply with the requirements, regardless of whether additional shields or specific form factors are required. However, the advantages of light weight, small size, and higher power density ...