power resistors, optocouplers or ceramic capacitors in rows. vintage circuit board

automatic background black board brown capacitor carbon ceramic chip circuit closeup component components data design detail device diode disposal eco electric electrical electronic electrotechnical electrotechnics electrotechnology element emitting engineering environment equipment ewaste galvanic green industry integrated interface isolation isolator led light link metallized microchip nobody nopeople obsolete old optical optocoupler optoisolator panoramic pcb photocoupler photodiode photosensitive phototransistor power printed recycling red resistor resistors retro row semiconductor separation sorting tech technology vintage waste white wire