NJ7P SQL Tube Database Query

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4CX1000A
Power Tetrode

EIA Base & Outline

Mechanical Data

Electrical Data

Heater Voltage ................................ 6 V
Heater Current ................................ 12.5 A

Direct Interelectrode Capacitances (approx)

Tetrode
Input ......................................... 35 pf
Output ........................................ 12 pf
Grid to Plate ................................. 0.005 pf

Maximum Ratings (Design Center Values)

Tetrode
Plate Voltage ................................. 3000 V
Grid No. 2 Voltage ............................ 400 V
Plate Dissipation ............................. 1000 W
Grid No. 2 Dissipation ........................ 12 W

Characteristics and Typical Operation

Class AB1 Amplifier
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 325 V
Grid No. 1 Voltage ............................ -55 V
Plate Current (Zero Signal) ................... 500 mA
Plate Current (Maximum Signal) ................ 2000 mA
Grid No. 2 Current (Zero Signal) .............. -4 mA
Grid No. 2 Current (Maximum Signal) ........... 60 mA
Load Resistance ............................... 2.8K Ω
Power Output (approx) ......................... 2160 W

Class AB1 Amplifier
Plate Voltage ................................. 2500 V
Grid No. 2 Voltage ............................ 325 V
Grid No. 1 Voltage ............................ -55 V
Plate Current (Zero Signal) ................... 500 mA
Plate Current (Maximum Signal) ................ 2000 mA
Grid No. 2 Current (Zero Signal) .............. -4 mA
Grid No. 2 Current (Maximum Signal) ........... 60 mA
Load Resistance ............................... 3.1K Ω
Power Output (approx) ......................... 2920 W

Class AB1 Amplifier
Plate Voltage ................................. 3000 V
Grid No. 2 Voltage ............................ 325 V
Grid No. 1 Voltage ............................ -55 V
Plate Current (Zero Signal) ................... 500 mA
Plate Current (Maximum Signal) ................ 1800 mA
Grid No. 2 Current (Zero Signal) .............. -4 mA
Grid No. 2 Current (Maximum Signal) ........... 60 mA
Load Resistance ............................... 3.85K Ω
Power Output (approx) ......................... 3360 W

Class AB1 Amplifier
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 325 V
Grid No. 1 Voltage ............................ -55 V
Peak Grid No. 1 Voltage........................ 60 V
Plate Current (Zero Signal) ................... 250 mA
Plate Current (Maximum Signal) ................ 1000 mA
Grid No. 2 Current (Zero Signal) .............. -2 mA
Grid No. 2 Current (Maximum Signal) ........... 35 mA
Driving Power ................................. 0 W
Power Output (approx) ......................... 1020 W

Class AB1 Amplifier
Plate Voltage ................................. 3000 V
Grid No. 2 Voltage ............................ 325 V
Grid No. 1 Voltage ............................ -60 V
Peak Grid No. 1 Voltage........................ 60 V
Plate Current (Zero Signal) ................... 250 mA
Plate Current (Maximum Signal) ................ 900 mA
Grid No. 2 Current (Zero Signal) .............. -3 mA
Grid No. 2 Current (Maximum Signal) ........... 35 mA
Driving Power ................................. 0 W
Power Output (approx) ......................... 1680 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

Sat, 02 Jul 2022 23:29:04 -0700