NJ7P SQL Tube Database Query

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117M7GT
Rectifier - Beam Power Tube

EIA Base & Outline

Application

Glass octal type used as combined half-wave rectifier and output ampifier in ac/dc receivers. Requires octal socket.

Mechanical Data

Bulb .......................................... T-9
EIA Outline ................................... 9-15
EIA Base ...................................... 8AO

Electrical Data

Heater Voltage ................................ 117 V
Heater Current ................................ 0.09 A

Maximum Ratings (Design Center Values)

Diode
Peak Inverse Plate Voltage .................... 350 V

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 105 V
Grid No. 2 Voltage ............................ 105 V
Grid No. 1 Voltage ............................ -5.2 V
Peak Grid No. 1 Voltage........................ 5.2 V
Plate Resistance (approx) ..................... 17000 Ω
Transconductance .............................. 5300 µ
Plate Current (Zero Signal) ................... 43 mA
Plate Current (Maximum Signal) ................ 43 mA
Grid No. 2 Current (Zero Signal) .............. 4 mA
Grid No. 2 Current (Maximum Signal) ........... 5.5 mA
Load Resistance ............................... 4K Ω
Power Output (approx) ......................... 0.85 W

Rectifier
Output Voltage ................................ 117 V
Output Current ................................ 75 mA

For other characteristics and typical operation, see 117L7GT

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, 25 Mar 2023 20:00:09 -0700