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VCR138A / 10E/759 CRT

Size This CRT measures 340x65mm overall and has a 12 contact base.

 

Heater voltage 4V
Heater current 1A
Max final anode voltage 5kV
X plate sensitivity 357/Va3 mm/V
Y plate sensitivity 780/Va3 mm/V
Typical operating conditions
Final anode voltage 1.2kV
Second anode voltage 200V
First anode voltage 1.2kV
Beam current 15µA

When viewing the screen with the tube positioned so the base spigot is uppermost, a positive voltage on X1 deflects the beam left and a positive voltage on Y1 deflects it upwards.

Pin Function
1 Grid
2 Cathode
3 Heater
4 Heater
5 Anode 1
6 Anode 2
7 Internal coating
8 Y2
9 X2
10 Anode 3
11 X1
12 Y1

The internal coating may be connected internally to A3 rather than pin 7.

 

VCR138A
Top quarter view Bottom quarter view

This file was last modified 15:48:35, Tuesday September 02, 2014