NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

11
Detector Amplifier

EIA Base & Outline

EIA Base: 4DEIA Bulb: 8-0

Substitute Data

Substitutes ................................... 6R7
Source ........................................ RCA RC-13 - 1937

Application

Source ........................................ RCA RC-13 - 1937
Glass types used as detectors and amplifiers in battery-operated radio receivers. Requires 4-contact socket.

Mechanical Data

Source ........................................ RCA RC-13 - 1937
Bulb .......................................... T-8
EIA Outline ................................... 8-0
Maximum Overall Height ........................ 4-1/8 In.
Maximum Seated Height ......................... 3-1/2 In.
Maximum Diameter .............................. 1-3/16 In.
EIA Base ...................................... 4D

Electrical Data

Source ........................................ RCA RC-13 - 1937
Heater Voltage ................................ 1.1 DC V
Heater Current ................................ 0.25 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ RCA RC-13 - 1937
Input ......................................... 2.5 pf
Output ........................................ 2.5 pf
Grid to Plate ................................. 3.3 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 135 V

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ -4.5 V
Amplification Factor .......................... 6.6
Plate Resistance (approx) ..................... 15.5K Ω
Transconductance .............................. 425 µMho
Plate Current ................................. 2.5 mA

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 135 V
Grid No. 1 Voltage ............................ -10.5 V
Amplification Factor .......................... 6.6
Plate Resistance (approx) ..................... 15K Ω
Transconductance .............................. 440 µMho
Plate Current ................................. 3 mA

Notes

Source ........................................ RCA RC-15 - 1947
1. Discontinued type!

A horizontal ribbon.

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Mon, 27 Jun 2022 08:29:16 -0700