NJ7P SQL Tube Database Query

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A horizontal ribbon.

41
Power Pentode

EIA Base & Outline

EIA Base: 6BEIA Bulb: 12-5

Substitute Data

Substitutes ................................... 42
Source ........................................ RCA RC-13 - 1937

Application

Source ........................................ RCA RC-13 - 1937
Glass type used as resistance-coupled or impedance-coupled amplifier in battery-operated receivers.This type is identical electrically with type 6K6GT.

Mechanical Data

Source ........................................ RCA RC-13 - 1937
Bulb .......................................... ST-12
Base Type ..................................... Medium 4-Pin
EIA Outline ................................... 12-5
EIA Base ...................................... 6B
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-13 - 1937
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.4 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-13 - 1937
Input ......................................... 250 pf

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -7 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 660 Ω
Amplification Factor .......................... 150
Plate Resistance (approx) ..................... 104K Ω
Transconductance .............................. 1450 µMho
Plate Current ................................. 9.0 mA
Grid No. 2 Current ............................ 1.6 mA
Load Resistance ............................... 12K Ω
Power Output (approx) ......................... 0.33 W
Total Harmonic Distortion ..................... 10 %

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -10 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 680 Ω
Amplification Factor .......................... 150
Plate Resistance (approx) ..................... 94K Ω
Transconductance .............................. 1600 µMho
Plate Current ................................. 12.5 mA
Grid No. 2 Current ............................ 2.2 mA
Load Resistance ............................... 10.4K Ω
Power Output (approx) ......................... 0.75 W
Total Harmonic Distortion ..................... 10 %

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 1 Voltage ............................ -13.5 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 630 Ω
Amplification Factor .......................... 150
Plate Resistance (approx) ..................... 81K Ω
Transconductance .............................. 1850 µMho
Plate Current ................................. 18.5 mA
Grid No. 2 Current ............................ 3.0 mA
Load Resistance ............................... 9K Ω
Power Output (approx) ......................... 1.5 W
Total Harmonic Distortion ..................... 10 %

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -18 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 480 Ω
Amplification Factor .......................... 150
Plate Resistance (approx) ..................... 68K Ω
Transconductance .............................. 2200 µMho
Plate Current ................................. 32 mA
Grid No. 2 Current ............................ 5.5 mA
Load Resistance ............................... 7.6K Ω
Power Output (approx) ......................... 3.4 W
Total Harmonic Distortion ..................... 10 %

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A horizontal ribbon.

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Sat, 25 Jun 2022 09:30:50 -0700