NJ7P SQL Tube Database Query

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A horizontal ribbon.

1G5G
Power Pentode

EIA Base & Outline

EIA Base: 6XEIA Bulb: 12-7

Substitute Data

Preferred Substitutes ......................... 1J5
Substitutes ................................... 1F5
Source ........................................ ARRL HB - 1947

Mechanical Data

Source ........................................ ARRL HB - 1947
Bulb .......................................... ST-14
Base Type ..................................... Octal
EIA Outline ................................... 14-1
EIA Base ...................................... 6X

Electrical Data

Source ........................................ ARRL HB - 1947
Filament Voltage .............................. 2.0 DC V
Filament Current .............................. 0.12 A

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ -6 V
Plate Resistance (approx) ..................... 133K Ω
Transconductance .............................. 1500 µMho
Plate Current ................................. 8.5 mA
Grid No. 2 Current ............................ 2.5 mA
Load Resistance ............................... 8.5K Ω
Power Output (approx) ......................... 0.25 W

Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -13.5 V
Amplification Factor .......................... 250
Plate Resistance (approx) ..................... 1.6M Ω
Transconductance .............................. 1550 µMho
Plate Current ................................. 8.7 mA
Grid No. 2 Current ............................ 2.5 mA
Load Resistance ............................... 9K Ω
Power Output (approx) ......................... 0.55 W

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A horizontal ribbon.

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Sat, 02 Jul 2022 23:40:03 -0700