closeup of electromagnetic coils and electrolytic capacitors or chips on green pcb

assembly background black board brown capacitor capacity chip circuit closeup coil component copper core crystal cylindrical dark design detail device disposal electric electrical electrolytic electromagnetic electronic electrotechnical electrotechnics electrotechnology energy engineering equipment ewaste ferrite ferromagnetic field green hardware induction inductor industry integrated layer layout macro micro microchip mount nobody part pcb power printed recycling red repair resistor science service shape smd smt spare spiral store supply surface technology twisted various voltage winding wire wrapped