The JTK first established our focus was to develop and manufacture PCB mounted magnetics which included high frequency transformers, gate-drive transformers, common mode chokes, and power factor correction chokes primarily for switched mode power supplies used in variety of applications for different industries. We have a wide selection of cores and bobbins readily available for high frequency transformers and when necessary we will design a bobbin and core for a specific customer application.
Not very mechanically different from high frequency transformers are the Gate-Drive transformers and Power Factor Correction (PFC) Chokes which can be designed in a toroid or core and bobbin combination. We design these magnetic components per UL60950, IEC 60950, and other related standards as requested by our customers.