Reference numerals / The Birth Of New Technology / Numerals (523) Secondary Pickup Coil Where it is first named Secondary Pickup Coil (523) Length (FL3a xxx FL3n) — In-Line Circuit Components How it is written (523) 1× Where it is named · 1 In-Line Circuit Components 1× Secondary Pickup Coil (523) Secondary Pickup Coil (523) Length (FL3a xxx FL3n) Read it there → ← (520) Energy Pumping Action (528) Voltage Enhancement Effect →