based on Image:Pentode-Symbol.svg: Symbol für eine Pentode (1) = Anode (2) = Kathode (3) = Steuergitter (4) = Schirmgitter (5) = Bremsgitter (H) = Kathodenheizung
File:Pentode-Symbol_de.svg licensed with PD-user-w 2007-03-23T14:23:41Z Fgli 198x306 (10561 Bytes) {{Information |Description=Symbol fuer eine Pentode: a
DescriptionPentodesymbol labeled.svg English: Schematic circuit symbol for a pentode vacuum tube. (F) filament or heater, (C) cathode, (G) control grid