NJ7P SQL Tube Database Query

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A horizontal ribbon.

RK24
Power Triode

EIA Base & Outline

EIA Base: 4D
Source ........................................ ARRL HB -1947

Mechanical Data

EIA Base ...................................... 4D

Electrical Data

Heater Voltage ................................ 2.0 V
Heater Current ................................ 0.12 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 3.5 pf
Output ........................................ 3.0 pf
Grid to Plate ................................. 5.5 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 180 V
Plate Dissipation ............................. 1.5 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 180 V
Grid No. 1 Voltage ............................ -13.5 V
Amplification Factor .......................... 8.0
Plate Resistance (approx) ..................... 5K Ω
Transconductance .............................. 1600 µMho
Plate Current ................................. 8.0 mA
Load Resistance ............................... 12K Ω
Power Output (approx) ......................... 0.25 W

Class C Oscillator/Amplifier
Plate Voltage ................................. 180 V
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Current ............................ 6 mA
Plate Current ................................. 16.5 mA
Driving Power ................................. 0.5 W
Power Output (approx) ......................... 2 W

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A horizontal ribbon.

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Wed, 08 Dec 2021 21:55:15 -0700