Coreless printed-circuit board transformers for signal and energy transfer

Coreless printed-circuit board transformers for signal and energy transfer

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The authors describe the optimal use of a printed-circuit board transformer with minimum power consumption. The proposed transformer is much smaller than a standard pulse transformer and is suitable for both signal and energy transfer. It can be operated in the megaHertz frequency range. With the use of modulation/demodulation circuits, it can be used for digital signal transmission over a wide frequency range from DC to ~300 kHz. The proposal can replace core-based transformers in many low-power applications.


    1. 1)
      • Bourgeois, J.M.: `PCB based transformer for power MOSFET drive', IEEE APEC'94, p. 238–244.
    2. 2)
      • Hui, S.Y.R., Tang, S.C.: `Coreless printed-circuit-board transformers', US, , February 1998.
    3. 3)
      • N. Mohan , T.M. Undeland , W.P. Robbins . (1995) Power electronics: converters, applications and design.
    4. 4)
      • J.D. Kraus . (2002) Antennas.

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