Virtual Valve Museum

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CV1518 CRT

Size This CRT measures 380x110 (screen) overall and has a 12 pin B12B base.

This is an electrostatic, split beam CRT. The Y plates are suitable for asymmetrical deflection only; the X plates are suitable for asymmetrical or symmetrical deflection.

It has a BB3 (Blue/Blue/very short persistence) or GG3 (Green/Green/very short persistence) screen. The prototype is VCR518. This CRT is a replacement for the CV963

Heater voltage 4V
Heater current 1.1A
Max third anode voltage 2kV
Max grid voltage -500V
x-plate sensitivity 558/Va3 mm/V
Each y-plate sensitivity 370/Va3 mm/V
Typical operating conditions
Second anode voltage 345V
Third anode voltage 1.2kV
Hood (A4) anode voltage 1.23kV
Modulator voltage -14V
Cathode current 135µA
Beam current 15µA

Anode 1 and 3 are connected internally. The 'hood' (anode 4) is an internal electrostatic shield around the deflecting system.

Pin Function
1 Cathode
2 Grid
3 Heater
4 Heater
5 -
6 Anode 2
7 Anode 4 (Hood)
8 Y2
9 X2
10 Anode 1 and 3
11 X1
12 Y1

Inside view

Quarter view