NJ7P SQL Tube Database Query

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803
Beam Power Pentode

EIA Base & Outline

EIA Base: 5J

Mechanical Data

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

Electrical Data

Heater Voltage ................................ 10 V
Heater Current ................................ 5 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 17.5 pf
Output ........................................ 29 pf
Grid to Plate ................................. 0.15 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 600 V
Plate Dissipation ............................. 125 W
Grid No. 2 Dissipation ........................ 30 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ 40 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -90 V
Grid No. 1 Current ............................ 12 mA
Plate Current ................................. 160 mA
Grid No. 2 Current ............................ 45 mA
Driving Power ................................. 2 W
Power Output (approx) ......................... 210 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 1600 V
Grid No. 3 Voltage ............................ 100 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -80 V
Grid No. 1 Current ............................ 4 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 20 mA
Driving Power ................................. 4 W
Power Output (approx) ......................... 155 W

Class C Modulated Amplifier (Suppressor)
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ -110 V
Grid No. 1 Voltage ............................ -100 V
Grid No. 1 Current ............................ 15 mA
Plate Current ................................. 80 mA
Grid No. 2 Current ............................ 48 mA
Driving Power ................................. 2.5 W
Power Output (approx) ......................... 53 W

Class C Modulated Amplifier (Grid)
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ 40 V
Grid No. 2 Voltage ............................ 600 V
Grid No. 1 Voltage ............................ -80 V
Grid No. 1 Current ............................ 4 mA
Plate Current ................................. 80 mA
Grid No. 2 Current ............................ 20 mA
Driving Power ................................. 2.0 W
Power Output (approx) ......................... 53 W

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Tue, 29 Nov 2022 00:13:33 -0700