NJ7P SQL Tube Database Query

A horizontal ribbon.

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

A horizontal ribbon.

1C8
Pentagrid Converter

EIA Base & Outline

EIA Base: 8CNEIA Bulb: 3-2

Substitute Data

Substitutes ................................... 1E8
Source ........................................ GE - 1975

Mechanical Data

Source ........................................ GE - 1975
Bulb .......................................... T-3
EIA Outline ................................... 3-2
EIA Base ...................................... 8CN

Electrical Data

Source ........................................ GE - 1975
Filament Voltage .............................. 1.25 DC V
Filament Current .............................. 0.04 A

Maximum Ratings (Design Center Values)

67.5
Source ........................................ GE - 1975
Grid No. 2 Supply Voltage ..................... 45 V
Grid No. 2 Voltage ............................ V
Negative Grid No. 1 Voltage ................... V
Positive Grid No. 1 Voltage ................... V
Plate Input ................................... W
Plate Dissipation ............................. W
Grid No. 2 Dissipation ........................ W
Cathode Current ............................... mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. Ω
Self Bias .................................. Ω
Bulb Temperature (At Hottest Point) ........... °C

Characteristics and Typical Operation

Converter
Source ........................................ GE - 1975
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 2 Dropping Resistor .................. 20K Ω
Grid No. 1 Voltage ............................ 0 V
Grid No. 1 Current ............................ 0.07 mA
Plate Resistance (approx) ..................... 400K Ω
Transconductance .............................. 150 µMho
Plate Current ................................. 1.0 mA
Grid No. 2 Current ............................ 1.5 mA
Grid No. 1 Voltage for Ib ..................... µa @ V
Driving Power ................................. W
Load Resistance ............................... Ω
Power Output (approx) ......................... W
Maximum Frequency ............................. MHz
Total Harmonic Distortion ..................... %

A horizontal ribbon.

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.

Please enter the tube number:

This database contains data on thousands of tubes. Every effort has been made to insure the accuracy of this reference, however, I assume no liability for the results of using information contained herein.

Other Tube Search Engines:
Frank's Electron Tube Pages

Complete Tube Manuals:
Tube Manual Index from NJ7P

A horizontal ribbon.

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

Sun, 05 Feb 2023 20:28:15 -0700