FILTERING DEVICE

摘要

A filtering device (1) for providing a higher frequency information carrying current on the same conductor as a lower frequency power carrying current comprises a first conductor (5) suitable for carrying alternating current signals in a desired frequency range and a second conductor (2) connected to the first conductor and suitable for carrying direct current and alternating current below the desired frequency range. The second conductor comprises a first inductor (8) suitable for providing impedance to at least some electrical oscillations in the desired frequency range and a second inductor (9) connected in series with the first inductor (8), which is suitable for providing impedance to at least some electrical oscillations in the desired frequency range that are not sufficiently reduced by the first inductor.