closeup of toroid electronic coil with ferrite core and copper wire on a pcb detail

electronic inductor coil circuit capacitor component closeup resistor electrical pcb detail engineering board electrotechnics throughhole technology macro green blue choke transformer toroid toroidal core electromagnetic induction copper wire ferrite magnetic field electricity power device polyswitch varistor diode color code printed soldered tin electrotechnology industry repair supply underside blur background ewaste recycle black red white side view sides winding conductor spiral electromagnet ring twisted ferromagnetic equipment design electrotechnical service flying disposal separation