TFC Announces Custom Winding of Common Mode Choke Toroid Inductor

TFC offer a range of standard and custom wound toroid inductors. Toroid coils provide maximum coupling and minimum losses and can be wound with single or bifilar wires, smd and pcb mounts are available to facilitate assembly and improve mechanical stability.

The widest possible range of ferrite materials may be used with toroid stacks and multiple windings for custom wound toroids. This is a fairly typical Toroid the output depends on the current load and inductance required. The inductance will cause the impedance to smooth the EMI.

Specific services for the Common Mode Choke include:
  • Custom Winding
  • Sourcing of core and wire
  • Inductance Test
  • Leakage Inductance Test
  • DCR Test
  • Turn Ratio & Polarity Test
  • Hi-Pot Test
Some uses for this are Current transformers, antenna balums, and line filters and also used for radio frequency interference (RFI) from power supply lines and for prevention of malfunctioning of electronic equipment. They pass differential currents (equal but opposite), while blocking common-mode currents

Senior Technical Design Engineer, Roger Chiang said: “This product is mainly used for filters, and around 3million are produced annually maybe more. They are sold worldwide and they are in rather high demand.”

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