NJ7P SQL Tube Database Query

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3EP1
Electrostatic CRT

EIA Base & Outline

Mechanical Data

Source ........................................ ARRL HB - 1946
EIA Base ...................................... 11A

General Data

Source ........................................ ARRL HB - 1946
Focusing Method ............................... ARRL HB - 1946
Deflecting Method ............................. Electrostatic
Deflecting Angle (approx) ..................... Electrostatic Deg.
Fluorescence ............................... P1
Phosphorescence ............................ Green
Faceplate ..................................... Medium

Electrical Data

Source ........................................ ARRL HB - 1946
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A

Characteristics and Typical Operation

Oscilloscope
Source ........................................ ARRL HB - 1946
Anode No. 2 Voltage ........................... 2000 V
Anode No. 1 Voltage ........................... 575 V
Grid No. 1 Voltage Required for Cutoff ........ -60 V
Deflection Factor
Deflecting Plates No. 1 & 2 ................... 220 V/In
Deflecting Plates No. 3 & 4 ................... 165 V/In

Oscilloscope
Source ........................................ ARRL HB - 1946
Anode No. 2 Voltage ........................... 1500 V
Anode No. 1 Voltage ........................... 430 V
Grid No. 1 Voltage Required for Cutoff ........ -45 V
Deflection Factor
Deflecting Plates No. 1 & 2 ................... 166 V/In
Deflecting Plates No. 3 & 4 ................... 124 V/In

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 11:04:14 -0700