NJ7P SQL Tube Database Query

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1B8GT
Diode -Triode - Beam Power Amplifier

EIA Base & Outline

Substitute Data

Substitutes ................................... 1D8
Source ........................................ ARRL HB - 1947

Mechanical Data

Source ........................................ ARRL HB - 1947
Bulb .......................................... T-9
Base Type ..................................... Octal
EIA Outline ................................... 9-17
EIA Base ...................................... 8AW

Electrical Data

Source ........................................ ARRL HB - 1947
Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.1 A

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 240K Ω
Transconductance .............................. 275 µ
Plate Current ................................. 0.15 mA

Tetrode Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ -6.0 V
Transconductance .............................. 1150 µ
Plate Current ................................. 6.3 mA
Grid No. 2 Current ............................ 1.4 mA
Load Resistance ............................... 14K Ω
Power Output (approx) ......................... 0.21 W

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Sat, 02 Jul 2022 08:07:03 -0700