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CV1521 CRT

Size This CRT measures 330x85mm overall and has a B12D base

This is an electrostatic focus and deflection CRT suitable for symmetrical or asymmetrical voltages. The EVS data gives the screen characteristics as BLY46 (BY8 - Blue/Yellow/long persistence).

Heater voltage 4V
Heater current 1.1A
Max final anode voltage 5kV
Max first anode voltage 2kV
X-plate sensitivity 357/Va3 mm/V
Y-plate sensitivity 780/Va3 mm/V
Typical operating conditions
Final anode voltage 4kV
Second anode voltage 700V
First anode voltage 1.8kV
Beam current 50µA


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

The final anode and internal coating are usually operated at the same voltage and manufacturers were free to connect the two internally, omitting the connection to pin 7.