Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
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Source ........................................ GE 1973
Bulb .......................................... T-9
EIA Outline ................................... 9-58
EIA Base ...................................... 12FM
Source ........................................ GE 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.93 A
Triode
Source ........................................ GE 1973
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 1.5 W
Pentode
Source ........................................ GE 1973
Plate Voltage ................................. 275 V
Grid No. 2 Voltage ............................ 275 V
Plate Dissipation ............................. 12 W
Grid No. 2 Dissipation ........................ 2.0 W
Triode
Source ........................................ GE 1973
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -2.0 V
Amplification Factor .......................... 95
Plate Resistance (approx) ..................... 45K Ω
Transconductance .............................. 2100 µ
Plate Current ................................. 1.5 mA
Pentode
Source ........................................ GE 1973
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -8.0 V
Plate Resistance (approx) ..................... 100K Ω
Transconductance .............................. 6500 µ
Plate Current ................................. 35 mA
Grid No. 2 Current ............................ 2.5 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 4.2 W
If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.
(c) 1994-2021 by William A. Beech, NJ7P
Fri, 19 Aug 2022 07:14:36 -0700