orange wire winding of air-core coil and pcb electronic components in blurry background

16x9 air aircore amplifier assembly background blue blur board bokeh capacitor circuit closeup coil component copper copy core design device disposal electrical electricity electromagnetic electronic electrotechnology element engineering equipment ewaste field frequency glue green hole inductance induction inductor industry inside layer macro magnetic metal mount nobody orange passive pcb printed radio radiofrequency recycle reflection repair research resistor science service shiny signal silicone small smd solenoid space surface technical technology twisted voltage winding wire