@StephanMatthiesen Yes, that’s correct: they use the magnetic field projected by the AC in the ring coil to induce their own AC in a tiny coil hidden under each LED package— then a precious little group of square-dancing diodes rectifies the current back in to much more respectable DC which lights up the diode. (as much i understand it it so far)
@futurebird @StephanMatthiesen what’s the reason for the bridge rectifier since the D in LED also stands for diode?
@th @StephanMatthiesen To change from AC to DC more smoothly otherwise they would get slowly damaged i think??
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No you could in fact use a LED as an element in your rectivfier and then place the current limiting resistor across it.
The issue with that is the diode would only be lit up half the cycle and the energy wasted on the other half of the cycle. The result would be the LED would be half bright and half energy wasted as heat.
That said it would work and the led would be smooth as the frequency is likely high enough not to be evident directly.
