NJ7P SQL Tube Database Query

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7Q7
Pentagrid Converter

EIA Base & Outline

EIA Base: 8ALEIA Bulb: 9-30
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass lock-in type used as converter in superhetrodyne circuits Requires lock-in socket.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
Base Type ..................................... Lock-in 8-Pin
EIA Outline ................................... 9-30
EIA Base ...................................... 8AL
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Characteristics and Typical Operation

Converter
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -2 V
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 450 µMho
Plate Current ................................. 3.5 mA
Grid No. 2 Current ............................ 8.5 mA

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Thu, 29 Sep 2022 23:42:35 -0700