NJ7P SQL Tube Database Query

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PL-6549
Beam Power Pentode

EIA Base & Outline

EIA Base: F14

Mechanical Data

EIA Base ...................................... F14

Electrical Data

Heater Voltage ................................ 6 V
Heater Current ................................ 3.5 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 7.5 pf
Output ........................................ 3.4 pf
Grid to Plate ................................. 0.09 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 600 V
Plate Dissipation ............................. 75 W
Grid No. 2 Dissipation ........................ 10 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ 70 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -125 V
Grid No. 1 Current ............................ 5 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 12 mA
Driving Power ................................. 0.8 W
Power Output (approx) ......................... 270 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ 70 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -140 V
Grid No. 1 Current ............................ 4 mA
Plate Current ................................. 125 mA
Grid No. 2 Current ............................ 15 mA
Driving Power ................................. 0.7 W
Power Output (approx) ......................... 200 W

Push Pull Class AB2 Amplifier
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ 70 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -85 V
Peak Grid No. 1 Voltage........................ 180 V
Plate Current (Zero Signal) ................... 30 mA
Plate Current (Maximum Signal) ................ 225 mA
Grid No. 2 Current (Zero Signal) .............. 0.1 mA
Grid No. 2 Current (Maximum Signal) ........... 10 mA
Driving Power ................................. 0.05 W
Load Resistance ............................... 19K Ω
Power Output (approx) ......................... 325 W

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Sat, 02 Jul 2022 20:25:27 -0700