NJ7P SQL Tube Database Query

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6L6GX
Power Amplifier Pentode

EIA Base & Outline

Application

Glass-octal type used in the output stage of audio amplifying equipment, especially units designed to have ample reserve of power-delivering ability. Requires octal socket.

This tube, like other power-handling tubes, should be adequately ventilated.

Mechanical Data

EIA Base ...................................... 7AC

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.9 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 11 pf
Output ........................................ 7 pf
Grid to Plate ................................. 1.5 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 21 W
Grid No. 2 Dissipation ........................ 3.5 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -50 V
Grid No. 1 Current ............................ 2 mA
Plate Current ................................. 90 mA
Grid No. 2 Current ............................ 9 mA
Driving Power ................................. 0.25 W
Power Output (approx) ......................... 30 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 325 V
Grid No. 2 Voltage ............................ 225 V
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Current ............................ 3 mA
Plate Current ................................. 90 mA
Grid No. 2 Current ............................ 9 mA
Driving Power ................................. 0.25 W
Power Output (approx) ......................... 20 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

Tue, 21 Mar 2023 04:34:49 -0700