The Core of High-Frequency Transformers

High-frequency transformers have long served radio frequency circuits, amplifiers, antennas, and transmitters. Current demand has surged due to internet-connected devices, renewable energy, and electric vehicles. Unlike their low-frequency counterparts, these require distinct design considerations.

Standard 60Hz transformers typically employ laminated iron cores. However, as frequency increases, iron cores experience rising hysteresis losses—the rubbing effect. This rapid magnetization and demagnetization generates excessive heat, reducing efficiency. Ferrite cores minimize these losses but sacrifice mechanical strength and become brittle at larger sizes. Application type and power requirements determine core material viability.

Multiple advanced materials beyond ferrites offer alternatives, each presenting unique trade-offs. There is no one-size-fits-all approach when it comes to high-frequency transformers. Pacific Transformer's engineers possess decades of experience designing reliable, efficient units used in mission-critical military and aerospace applications.