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6L6GC
Beam Power Pentode

EIA Base & Outline

EIA Base: 7ACEIA Bulb: 12-15
Source ........................................ Sylvania - 1959

Application

Source ........................................ Sylvania - 1959
Glass-octal type used in the output stage of audio amplifying equipment, especially units designed to have ample reserve of power-delivering ability. Requires octal socket.

Source ........................................ Sylvania - 1959
This tube, like other power-handling tubes, should be adequately ventilated. 6L6GC can be used in place of type 6L6 and may be supplied with pin 1 omitted.

Mechanical Data

Source ........................................ Sylvania - 1959
Bulb .......................................... T-12
Base Type ..................................... Short Medium Shell Octal 6-Pin
EIA Outline ................................... 12-15
EIA Base ...................................... 7AC
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ Sylvania - 1959
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.9 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ Sylvania - 1959
Input ......................................... 10 pf
Output ........................................ 6.5 pf
Grid to Plate ................................. 0.6 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 450 V
Plate Dissipation ............................. 30 W
Grid No. 2 Dissipation ........................ 5 W

Characteristics and Typical Operation

Class A Amplifier (Triode Connected)
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -20 V
Peak Grid No. 1 Voltage........................ 8 V
Plate Resistance (approx) ..................... 1.7K Ω
Transconductance .............................. 4700 µMho
Plate Current (Zero Signal) ................... 40 mA
Plate Current (Maximum Signal) ................ 44 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 1.4 W
Total Harmonic Distortion ..................... 5 %

Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -14 V
Peak Grid No. 1 Voltage........................ 14 V
Plate Resistance (approx) ..................... 22.5K Ω
Transconductance .............................. 6000 µMho
Plate Current (Zero Signal) ................... 72 mA
Plate Current (Maximum Signal) ................ 79 mA
Grid No. 2 Current (Zero Signal) .............. 5 mA
Grid No. 2 Current (Maximum Signal) ........... 7.3 mA
Load Resistance ............................... 2.5K Ω
Power Output (approx) ......................... 6.5 W
Total Harmonic Distortion ..................... 10 %

Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -12.5 V
Peak Grid No. 1 Voltage........................ 12.5 V
Plate Resistance (approx) ..................... 35K Ω
Transconductance .............................. 5300 µMho
Plate Current (Zero Signal) ................... 48 mA
Plate Current (Maximum Signal) ................ 55 mA
Grid No. 2 Current (Zero Signal) .............. 2.5 mA
Grid No. 2 Current (Maximum Signal) ........... 4.7 mA
Load Resistance ............................... 4.5K Ω
Power Output (approx) ......................... 6.5 W
Total Harmonic Distortion ..................... 11 %

Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 200 Ω
Peak Grid No. 1 Voltage........................ 28 V
Plate Current (Zero Signal) ................... 112 mA
Plate Current (Maximum Signal) ................ 128 mA
Grid No. 2 Current (Zero Signal) .............. 7 mA
Grid No. 2 Current (Maximum Signal) ........... 16 mA
Load Resistance ............................... 6.6K Ω
Power Output (approx) ......................... 32 W

Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 350 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -18 V
Peak Grid No. 1 Voltage........................ 18 V
Plate Resistance (approx) ..................... 33K Ω
Transconductance .............................. 5200 µMho
Plate Current (Zero Signal) ................... 54 mA
Plate Current (Maximum Signal) ................ 66 mA
Grid No. 2 Current (Zero Signal) .............. 2.5 mA
Grid No. 2 Current (Maximum Signal) ........... 7 mA
Load Resistance ............................... 4.2K Ω
Power Output (approx) ......................... 10.8 W
Total Harmonic Distortion ..................... 15 %

Push Pull Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -16 V
Peak Grid No. 1 Voltage........................ 32 V
Plate Resistance (approx) ..................... 24.5 Ω
Transconductance .............................. 5500 µMho
Plate Current (Zero Signal) ................... 120 mA
Plate Current (Maximum Signal) ................ 140 mA
Grid No. 2 Current (Zero Signal) .............. 10 mA
Grid No. 2 Current (Maximum Signal) ........... 16 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 14.5 W
Total Harmonic Distortion ..................... 2 %

Push Pull Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 270 V
Grid No. 2 Voltage ............................ 270 V
Grid No. 1 Voltage ............................ -17.5 V
Peak Grid No. 1 Voltage........................ 35 V
Plate Resistance (approx) ..................... 23.5 Ω
Transconductance .............................. 5700 µMho
Plate Current (Zero Signal) ................... 134 mA
Plate Current (Maximum Signal) ................ 155 mA
Grid No. 2 Current (Zero Signal) .............. 11 mA
Grid No. 2 Current (Maximum Signal) ........... 17 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 17.5 W
Total Harmonic Distortion ..................... 2 %

Push Pull Class AB1 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Grid No. 1 Voltage ............................ -24 V
Peak Grid No. 1 Voltage........................ 48 V
Plate Current (Zero Signal) ................... 122 mA
Plate Current (Maximum Signal) ................ 184 mA
Grid No. 2 Current (Zero Signal) .............. 5 mA
Grid No. 2 Current (Maximum Signal) ........... 11 mA
Load Resistance ............................... 3.8K Ω
Power Output (approx) ......................... 31.5 W

Push Pull Class AB1 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -25 V
Peak Grid No. 1 Voltage........................ 50 V
Plate Current (Zero Signal) ................... 102 mA
Plate Current (Maximum Signal) ................ 152 mA
Grid No. 2 Current (Zero Signal) .............. 6 mA
Grid No. 2 Current (Maximum Signal) ........... 17 mA
Load Resistance ............................... 6.6K Ω
Power Output (approx) ......................... 34 W

Push Pull Class AB1 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 450 V
Grid No. 2 Voltage ............................ 350 V
Grid No. 1 Voltage ............................ -30 V
Peak Grid No. 1 Voltage........................ 60 V
Plate Current (Zero Signal) ................... 95 mA
Plate Current (Maximum Signal) ................ 194 mA
Grid No. 2 Current (Zero Signal) .............. 3.4 mA
Grid No. 2 Current (Maximum Signal) ........... 19.2 mA
Load Resistance ............................... 6.0K Ω
Power Output (approx) ......................... 50 W

Push Pull Class AB1 Amplifier (Ult lin)
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 410 V
Grid No. 2 Voltage ............................ 410 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 220 Ω
Peak Grid No. 1 Voltage........................ 68 V
Plate Current (Zero Signal) ................... 134 mA
Plate Current (Maximum Signal) ................ 155 mA
Load Resistance ............................... 8.0K Ω
Power Output (approx) ......................... 24 W

Push Pull Class AB1 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 360 V
Grid No. 2 Voltage ............................ 270 V
Grid No. 1 Voltage ............................ -22.5 V
Peak Grid No. 1 Voltage........................ 45 V
Plate Current (Zero Signal) ................... 88 mA
Plate Current (Maximum Signal) ................ 140 mA
Grid No. 2 Current (Zero Signal) .............. 5 mA
Grid No. 2 Current (Maximum Signal) ........... 11 mA
Load Resistance ............................... 3.8K Ω
Power Output (approx) ......................... 18 W
Total Harmonic Distortion ..................... 2 %

Push Pull Class AB1 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 360 V
Grid No. 2 Voltage ............................ 270 V
Grid No. 1 Voltage ............................ -22.5 V
Peak Grid No. 1 Voltage........................ 45 V
Plate Current (Zero Signal) ................... 88 mA
Plate Current (Maximum Signal) ................ 132 mA
Grid No. 2 Current (Zero Signal) .............. 5 mA
Grid No. 2 Current (Maximum Signal) ........... 15 mA
Load Resistance ............................... 6.6K Ω
Power Output (approx) ......................... 26.5 W
Total Harmonic Distortion ..................... 2 %

Push Pull Class AB1 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 450 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -37 V
Peak Grid No. 1 Voltage........................ 70 V
Plate Current (Zero Signal) ................... 116 mA
Plate Current (Maximum Signal) ................ 210 mA
Grid No. 2 Current (Zero Signal) .............. 5.6 mA
Grid No. 2 Current (Maximum Signal) ........... 22 mA
Load Resistance ............................... 5.6k Ω
Power Output (approx) ......................... 55 W
Total Harmonic Distortion ..................... 1.8 %

Push Pull Class AB2 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 360 V
Grid No. 2 Voltage ............................ 225 V
Grid No. 1 Voltage ............................ -18 V
Peak Grid No. 1 Voltage........................ 52 V
Plate Current (Zero Signal) ................... 78 mA
Plate Current (Maximum Signal) ................ 142 mA
Grid No. 2 Current (Zero Signal) .............. 3.5 mA
Grid No. 2 Current (Maximum Signal) ........... 11 mA
Load Resistance ............................... 6K Ω
Power Output (approx) ......................... 31 W
Total Harmonic Distortion ..................... 2 %

Push Pull Class AB2 Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 360 V
Grid No. 2 Voltage ............................ 270 V
Grid No. 1 Voltage ............................ -22.5 V
Peak Grid No. 1 Voltage........................ 72 V
Plate Current (Zero Signal) ................... 88 mA
Plate Current (Maximum Signal) ................ 205 mA
Grid No. 2 Current (Zero Signal) .............. 5 mA
Grid No. 2 Current (Maximum Signal) ........... 16 mA
Load Resistance ............................... 3.8K Ω
Power Output (approx) ......................... 47 W
Total Harmonic Distortion ..................... 2 %

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Mon, 15 Aug 2022 17:38:40 -0700