copper wire winding in transformer rectangular core and protruding insulation grooves

transformer electronic integrated circuit copper wire closeup inductor induction coil board pcb component rectangular core electrical engineering technology tech detail industry winding ferrite magnetic field electromagnetic insulation groove impedance inductance high voltage energy power device part semiconductor printed micro chip microchip ic capacitor resistor jumper electrotechnology technical repair science e-waste disassembled computer hardware yellow black nobody macro components protruding danger electric electrolytic element electrotechnical industrial service eco sorting waste recycling dismantled beige pink nopeople