NJ7P SQL Tube Database Query

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6524
Twin Beam Power Pentode

EIA Base & Outline

Mechanical Data

EIA Base ...................................... F76

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.25 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 7 pf
Output ........................................ 3.4 pf
Grid to Plate ................................. 0.11 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 25 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -44 V
Grid No. 1 Current ............................ 3.7 mA
Plate Current ................................. 120 mA
Grid No. 2 Current ............................ 8 mA
Driving Power ................................. 0.2 W
Power Output (approx) ......................... 56 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -61 V
Grid No. 1 Current ............................ 2.5 mA
Plate Current ................................. 100 mA
Grid No. 2 Current ............................ 7 mA
Driving Power ................................. 0.2 W
Power Output (approx) ......................... 40 W

Class AB2 Amplifier
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -26 V
Grid No. 1 Current ............................ 2.6 mA
Plate Current (Zero Signal) ................... 20 mA
Plate Current (Maximum Signal) ................ 116 mA
Grid No. 2 Current (Zero Signal) .............. 0.1 mA
Grid No. 2 Current (Maximum Signal) ........... 10 mA
Driving Power ................................. 0.1 W
Load Resistance ............................... 11.1K Ω
Power Output (approx) ......................... 40 W

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Wed, 08 Feb 2023 22:42:51 -0700