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Preferred Substitutes ......................... 6J10
Source ........................................ GE DS 09/65
Source ........................................ GE DS 09/65
Duodecar type used as combined limiter, discriminator and audio power-output tube in FM radio and tv receivers. Requires duodecar 12-contact socket.
Source ........................................ GE DS 09/65
Bulb .......................................... T-9
Base Type ..................................... E12-70 Button 12-Pin
EIA Outline ................................... 9-58
EIA Base ...................................... 12BT
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any
Source ........................................ GE DS 09/65
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.95 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 100 V
Total DC and Peak ....................... 200 V
Heater Negative with Respect to Cathode
Total DC and Peak ....................... 200 V
Gated-Beam
Source ........................................ GE DS 09/65
Input ......................................... 4.4 pf
Pentode
Source ........................................ GE DS 09/65
Input ......................................... 11.0 pf
Output ........................................ 7.5 pf
Grid to Plate ................................. 0.22 pf
Gated-Beam
Source ........................................ GE DS 09/65
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Positive Grid No. 1 Voltage ................... 60 V
Cathode Current ............................... 13 mA
Pentode
Source ........................................ GE DS 09/65
Plate Voltage ................................. 275 V
Grid No. 2 Voltage ............................ 275 V
Plate Dissipation ............................. 10 W
Grid No. 2 Dissipation ........................ 2 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 250K Ω
Self Bias .................................. 500K Ω
Pentode Class A Amplifier
Source ........................................ GE DS 09/65
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -8 V
Peak Grid No. 1 Voltage........................ 8 V
Plate Resistance (approx) ..................... 100K Ω
Transconductance .............................. 6500 µ
Plate Current (Zero Signal) ................... 35 mA
Plate Current (Maximum Signal) ................ 39 mA
Grid No. 2 Current (Zero Signal) .............. 3 mA
Grid No. 2 Current (Maximum Signal) ........... 13 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 4.2 W
Total Harmonic Distortion ..................... 8.5 %
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
Sat, 25 Mar 2023 18:54:26 -0700