toroidal electronic inductors soldered on circuit board detail

abstract aluminum background blue board both bottom capacitor circuit closeup coil component computer converter cooler copper core detail device disassembled disposal educative electric electrical electromagnetic electronic electrotechnic electrotechnology embedded engineering equipment ewaste ferrite ferromagnetic fuse glue green heat inductance induction inductor industry inverter magnetic nobody nopeople part pcb polyswitch power recycle repair resettable ring science semiconductor service sides sink sky soldered supply tech technology toroid transformer two underside varistor view voltage winding wire yellow