Keywords: Pentode symbol pl.svg A - anoda K - katoda S1 S2 S3 - siatki Ż - żarzenie Pentode-Symbol_de svg 2011-03-26 20 23 UTC Pentode-Symbol_de svg erstellt von de User RokerHRO geaendert von de User Fgli derivative work RJB1 <span class signature-talk >talk</span> Pentode symbol dh pl svg Polish version RJB1 Pentode-Symbol_de svg PD-user-w Original upload log This image is a derivative work of the following images File Pentode-Symbol_de svg licensed with PD-user-w 2007-03-23T14 23 41Z Fgli 198x306 10561 Bytes <nowiki> Symbol fuer eine Pentode a - Anode k - Kathode f - Heizung g1 - Steuergitter g2 - Schirmgitter g3 - Bremsgitter gezeichnet mit Xfig / Inkscape 23 03 07 erstellt von de</nowiki> Uploaded with derivativeFX Vacuum tube symbols Pentodes |