closeup of printed circuit board with electronic components. electrotechnics

abstract band black blue board capacitor circuit closeup code color colored colorful component components copper design detail development device disassembled dismantled disposal eco electric electrical electricity electronic electronics electrotechnical electrotechnics electrotechnology element engineering environment equipment ewaste green hardware industry laboratory layer layout nobody nopeople ohm part passive pcb printed recycling red repair resistance resistor resistors science semiconductor separation service soldered sorting spare standard stripe tech technical technology tin transistor various waste wire yellow