Balisor[1] usually uses capacitive coupling, but it require a long parallel cable. Some lamps do use induction, like this one[2]. I guess it uses induction lo

Balisor[1] usually uses capacitive coupling, but it require a long parallel cable. Some lamps do use induction, like this one[2]. I guess it uses induction looking at the drone, it also works with an open coil. [1]: https://en.wikipedia.org/wiki/Balisor https://en.wikipedia.org/wiki/Balisor [2]: https://www.delta-box.com/en/marking/bht-marking-light-for-high-voltage-line/ https://www.delta-box.com/en/marking/bht-marking-light-for-h...