NJ7P SQL Tube Database Query

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7G8
Triple Grid Amplifier

EIA Base & Outline

EIA Base: 8BVEIA Bulb: 9-32
Source ........................................ ARRL HB - 1947

Mechanical Data

Source ........................................ ARRL HB - 1947
Bulb .......................................... T-9
Base Type ..................................... Lock-in 8-Pin
EIA Outline ................................... 9-32
EIA Base ...................................... 8BV

Electrical Data

Source ........................................ ARRL HB - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -2.5 V
Plate Resistance (approx) ..................... 225K Ω
Transconductance .............................. 2100 µMho
Plate Current ................................. 4.5 mA
Grid No. 2 Current ............................ 0.8 mA

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Thu, 18 Aug 2022 10:49:05 -0700