blue air core inductors from metal wire on green printed circuit board of tv card rf module

electronic circuit inductor coil wire pcb closeup electrical component board air core high frequency spiral green macro card module planar flat blue aircore transformer copper winding helical magnetic field electromagnetic inductance radiofrequency metal layer device television printed layout capacitor resistor surface mount throughhole technology amplifier disassembled engineering electrotechnics industry service science ewaste disposal white bokeh technical detail coils radio signal induction design tuner inside receiver repair electrotechnology recycling background blur inductors components