NJ7P SQL Tube Database Query

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6AD10A
Beam Power Tube - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 12EZEIA Bulb: 9-59

Substitute Data

Preferred Substitutes ......................... 6T10
Source ........................................ GE DS 8/71

Application

Source ........................................ GE DS 8/71
Duodecar type used as FM detector and audio-frequency output amplifier in color and black-and-white television receivers. Requires duodecar 12-contact socket.

Mechanical Data

Source ........................................ GE DS 8/71
Bulb .......................................... T-9
Base Type ..................................... E12-70 Button 12-Pin
EIA Outline ................................... 9-59
EIA Base ...................................... 12EZ
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 8/71
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.05 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

Direct Interelectrode Capacitances (approx)

Beam Pentode
Source ........................................ GE DS 8/71
Input ......................................... 11 pf
Output ........................................ 11 pf
Grid to Plate ................................. 0.26 pf

Dual-Control Pentode
Source ........................................ GE DS 8/71
Grid No. 1 to Plate ........................... 0.038 pf
Grid No. 3 to Plate ........................... 3.0 pf
Grid No. 1 to All Except Plate (Input) ........ 7.0 pf
Grid No. 3 to All (Input) ..................... 8.0 pf
Grid No. 1 to Grid No. 3 ...................... 0.13 pf

Maximum Ratings (Design Center Values)

Beam Pentode
Source ........................................ GE DS 8/71
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 12 W
Grid No. 2 Dissipation ........................ 2.5 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 250K Ω
Self Bias .................................. 500K Ω

Dual-Control Pentode
Source ........................................ GE DS 8/71
Plate Voltage ................................. 300 V
Positive Grid No. 3 Voltage ................... 25 V
Negative Grid No. 3 Voltage ................... -100 V
Grid No. 2 Supply Voltage ..................... 300 V
Grid No. 2 Voltage ............................ See Chart V
Positive Grid No. 1 Voltage ................... 0 V
Negative Grid No. 1 Voltage ................... -50 V
Plate Dissipation ............................. 1.7 W
Grid No. 2 Dissipation ........................ 1.0 W
Grid No. 3 Circuit Resistance ................. 680K Ω
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 220K Ω
Self Bias .................................. 470K Ω

Characteristics and Typical Operation

Beam Class A Amplifier
Source ........................................ GE DS 8/71
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 µMho
Plate Current (Zero Signal) ................... 35 mA
Plate Current (Maximum Signal) ................ 39 mA
Grid No. 2 Current (Zero Signal) .............. 2.5 mA
Grid No. 2 Current (Maximum Signal) ........... 7 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 4.2 W
Total Harmonic Distortion ..................... 10 %

FM Detector
Source ........................................ GE DS 8/71
Plate Voltage ................................. 150 V
Grid No. 3 Voltage ............................ 0 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage Derived From
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 110K Ω
Grid No. 1 Transconductance ................... 2500 µMho
Grid No. 3 Transconductance ................... 850 µMho
Plate Current ................................. 2.8 mA
Grid No. 2 Current ............................ 3.4 mA
Grid No. 1 Voltage for Ib ..................... 20 µa @ -4.0 V
Grid No. 3 Voltage for Ib ..................... 20 µa @ -3.0 V

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Thu, 18 Aug 2022 15:34:57 -0700