NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

7A5
Beam Power Tube

EIA Base & Outline

EIA Base: 6AAEIA Bulb: 9-31
Source ........................................ RS-15

Application

Source ........................................ RS-15
Glass lock-in type used as output amplifier in radio receivers in which the plate voltage available for the output stage is relatively low. Requires lock-in socket.

Mechanical Data

Source ........................................ RS-15
Bulb .......................................... T-9
Base Type ..................................... Lock-in 8-Pin
EIA Outline ................................... 9-31
EIA Base ...................................... 6AA

Electrical Data

Source ........................................ RS-15
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.75 A

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RS-15
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Plate Dissipation ............................. 5.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RS-15
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -7.5 V
Plate Resistance (approx) ..................... 16000 Ω
Transconductance .............................. 5800 µMho
Plate Current ................................. 40 mA
Grid No. 2 Current ............................ 3 mA
Load Resistance ............................... 2500 Ω
Power Output (approx) ......................... 1.5 W

Class A Amplifier
Source ........................................ RS-15
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -9 V
Plate Resistance (approx) ..................... 17000 Ω
Transconductance .............................. 6000 µMho
Plate Current ................................. 44 mA
Grid No. 2 Current ............................ 3.3 mA
Load Resistance ............................... 2700 Ω
Power Output (approx) ......................... 2.2 W

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 04 Oct 2022 15:01:17 -0700