NJ7P SQL Tube Database Query

Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.

50L6
Beam Power Amplifier

EIA Base & Outline

Application

Glass octal type used in output stage of ac/dc radio receivers. Requires octal socket and may be mounted in any position.

Mechanical Data

Bulb .......................................... T-9
Base Type ..................................... Intermediate Octal 7-Pin
EIA Outline ................................... 9-11
EIA Base ...................................... 7S
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 50 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 15 pf
Output ........................................ 9.5 pf
Grid to Plate ................................. 0.8 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 117 V
Plate Dissipation ............................. 10 W
Grid No. 2 Dissipation ........................ 1.25 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -8 V
Peak Grid No. 1 Voltage........................ 8.0 V
Plate Resistance (approx) ..................... 30K Ω
Transconductance .............................. 9500 µ
Plate Current (Zero Signal) ................... 50 mA
Plate Current (Maximum Signal) ................ 55 mA
Grid No. 2 Current (Zero Signal) .............. 2 mA
Grid No. 2 Current (Maximum Signal) ........... 7 mA
Load Resistance ............................... 3K Ω
Power Output (approx) ......................... 4.3 W

Class A Amplifier
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -7.5 V
Peak Grid No. 1 Voltage........................ 7.5 V
Plate Resistance (approx) ..................... 13K Ω
Transconductance .............................. 9000 µ
Plate Current (Zero Signal) ................... 49 mA
Plate Current (Maximum Signal) ................ 50 mA
Grid No. 2 Current (Zero Signal) .............. 4 mA
Grid No. 2 Current (Maximum Signal) ........... 11 mA
Load Resistance ............................... 2K Ω
Power Output (approx) ......................... 2.1 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

Mon, 27 Jun 2022 10:51:24 -0700