NJ7P SQL Tube Database Query

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6K6GT
Power Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6F6
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Glass-octal type used in output stage of radio receivers. It is capable of delivering moderate power output with relatively small input voltages. Tube may be used singly or in push-pull. Requires octal socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-9
Base Type ..................................... Intermediate Shell Octal 6 or 7-Pin
EIA Outline ................................... 9-11 9-41
EIA Base ...................................... 7S
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.4 A
Maximum Heater-Cathode Voltage ................ 100 V
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 200 V
Heater Negative with Respect to Cathode
DC Component ............................ 200 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 5.5 pf
Output ........................................ 6 pf
Grid to Plate ................................. 0.5 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 315 V
Grid No. 2 Voltage ............................ 285 V
Plate Dissipation ............................. 8.5 W
Grid No. 2 Dissipation ........................ 2.8 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -7 V
Peak Grid No. 1 Voltage........................ 7 V
Plate Resistance (approx) ..................... 104K Ω
Transconductance .............................. 1500 µ
Plate Current (Zero Signal) ................... 9 mA
Plate Current (Maximum Signal) ................ 9.5 mA
Grid No. 2 Current (Zero Signal) .............. 1.6 mA
Grid No. 2 Current (Maximum Signal) ........... 3 mA
Load Resistance ............................... 12K Ω
Power Output (approx) ......................... 0.35 W
Total Harmonic Distortion ..................... 11 %

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -18 V
Peak Grid No. 1 Voltage........................ 18 V
Plate Resistance (approx) ..................... 90K Ω
Transconductance .............................. 2300 µ
Plate Current (Zero Signal) ................... 32 mA
Plate Current (Maximum Signal) ................ 33 mA
Grid No. 2 Current (Zero Signal) .............. 5.5 mA
Grid No. 2 Current (Maximum Signal) ........... 10 mA
Load Resistance ............................... 7.6K Ω
Power Output (approx) ......................... 3.4 W
Total Harmonic Distortion ..................... 11 %

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 315 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -21 V
Peak Grid No. 1 Voltage........................ 21 V
Plate Resistance (approx) ..................... 110K Ω
Transconductance .............................. 2100 µ
Plate Current (Zero Signal) ................... 25.5 mA
Plate Current (Maximum Signal) ................ 28 mA
Grid No. 2 Current (Zero Signal) .............. 4 mA
Grid No. 2 Current (Maximum Signal) ........... 9 mA
Load Resistance ............................... 9K Ω
Power Output (approx) ......................... 4.5 W
Total Harmonic Distortion ..................... 15 %

Push Pull Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 285 V
Grid No. 2 Voltage ............................ 285 V
Grid No. 1 Voltage ............................ -25.5 V
Peak Grid No. 1 Voltage........................ 51 V
Plate Current (Zero Signal) ................... 55 mA
Plate Current (Maximum Signal) ................ 72 mA
Grid No. 2 Current (Zero Signal) .............. 9 mA
Grid No. 2 Current (Maximum Signal) ........... 17 mA
Load Resistance ............................... 12K Ω
Power Output (approx) ......................... 10.5 W
Total Harmonic Distortion ..................... 6 %

Push Pull Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 285 V
Grid No. 2 Voltage ............................ 285 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 400 Ω
Peak Grid No. 1 Voltage........................ 51 V
Plate Current (Zero Signal) ................... 55 mA
Plate Current (Maximum Signal) ................ 61 mA
Grid No. 2 Current (Zero Signal) .............. 9 mA
Grid No. 2 Current (Maximum Signal) ........... 13 mA
Load Resistance ............................... 12K Ω
Power Output (approx) ......................... 9.8 W
Total Harmonic Distortion ..................... 4 %

Class A Amplifier (Triode Connected)
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -18 V
Amplification Factor .......................... 6.8
Plate Resistance (approx) ..................... 2.5K Ω
Transconductance .............................. 2700 µ
Plate Current ................................. 37.5 mA

Notes

Source ........................................ RCA RC-29 - 1975
1. Screen tied to plate for triode connection.

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Thu, 18 Aug 2022 19:54:58 -0700