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ACR1

Sensibly equivalent to:
CV1379
    
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The ACR1 is an electrostatically deflected CRT it is identical to the CV1397. It is a five inch tube with a maximum diameter of the bell of 134 mm.
The ACR2X is described as a low sensitivity version of the ACR1 and was used in gun laying radar for anti-aircraft guns during the period 1939-45.
To achieve lower inductance in the deflection circuits all four deflection plates are brought out to side contacts. As is the final anode connection.
The ACR1 can be seen on the glass. Inside is the colloidal graphite coating that acts as the final anode. At the top of the image are the Y plate connections.
The triangular base connectors accept 4 mm plugs.
The screen is curved to keep the glass in compression. With the technology of the time a flat plate would have imploded.
The electron gun with the cylinders supported on ceramic rods.
The end window envelope is 51 mm in diameter and, including the base sockets, is 490 mm tall.
Reference: Data-sheet.

 

Pin Connections
1
2
3
4
5
6
SC
k
g1
h
h
a2
a1
a3

 

Absolute Maximum Operating Conditions
CRT
Vh
Ah
Va
4.0
1.1
4,000
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 04, 2020.
shape:end.window construction:pinch type:cathode-ray.tube age:1940.1950 base: heater:4.0v pins:6 pin:1.k pin:2.g1 pin:3.h pin:4.h pin:5.a2 pin:6.a1 pin:sc.a3
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