[
 "capacitor.unpolarized",
  "text",
  "gnd",
  "vss",
  "voltage.battery",
  "resistor.photo",
  "capacitor.unpolarized",
  "capacitor.polarized",
  "capacitor.adjustable",
  "inductor.ferrite",
  "transformer",
  "diode.light_emitting",
  "thyristor",
  "transistor.photo",
  "switch",
  "relay",
  "crystal"
]