NJ7P SQL Tube Database Query

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A horizontal ribbon.

RK46
Power Pentode

EIA Base & Outline

EIA Base: 5J

Mechanical Data

EIA Base ...................................... 5J

Electrical Data

Heater Voltage ................................ 12.6 V
Heater Current ................................ 2.5 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 14 pf
Output ........................................ 12 pf
Grid to Plate ................................. 0.01 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 1250 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 40 W
Grid No. 2 Dissipation ........................ 15 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 1250 V
Grid No. 3 Voltage ............................ 45 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -100 V
Grid No. 1 Current ............................ 11.5 mA
Plate Current ................................. 92 mA
Grid No. 2 Current ............................ 36 mA
Driving Power ................................. 1.6 W
Power Output (approx) ......................... 84 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 1000 V
Grid No. 3 Voltage ............................ 0 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -100 V
Grid No. 1 Current ............................ 10 mA
Plate Current ................................. 75 mA
Grid No. 2 Current ............................ 30 mA
Driving Power ................................. 1.3 W
Power Output (approx) ......................... 52 W

Class C Modulated Amplifier (Suppressor)
Plate Voltage ................................. 1250 V
Grid No. 3 Voltage ............................ -45 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -100 V
Grid No. 1 Current ............................ 11.5 mA
Plate Current ................................. 48 mA
Grid No. 2 Current ............................ 44 mA
Driving Power ................................. 1.5 W
Power Output (approx) ......................... 21 W

Class C Modulated Amplifier (Grid)
Plate Voltage ................................. 1250 V
Grid No. 3 Voltage ............................ 45 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -142 V
Grid No. 1 Current ............................ 1.8 mA
Plate Current ................................. 40 mA
Grid No. 2 Current ............................ 7 mA
Driving Power ................................. 1.5 W
Power Output (approx) ......................... 20 W

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Wed, 07 Dec 2022 14:17:44 -0700