inductors detail. copper wire winding. magnetic ferrite core. inverter

coil inductor wire winding copper core inductance toroid inverter integrated circuit closeup macro magnetic blur electronic part component choke electromagnet round circle ferrite transformer electric power supply unit capacitor chip micro microchip device disassembled electrical engineering electronics industry electrotechnology technology repair science development spare obsolete retro technical background design shop laboratory blue yellow white colorful nobody detail inductors coils step down up ring solder diode dismantled network research industrial group store beautiful gray black nopeople selective focus