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VT-144

Sensibly equivalent to:
813
See also:
813 Annotated Diagram
    
Extras ▼

 

The US Army VT-144 (commercial 813) is an RCA design high voltage, low current power beam tetrode with an anode dissipation of 125 Watts. This exhibit was made by National Union.
The valve base would be mounted on spacers so that a blower could be fitted under the chassis and a stream of forced air cooling would pass over the envelope.
The National Union Logo and 813 Type designation etched into the glass.
High voltages and high power require ceramic insulators. The top insulator is fitted with springs to hold it firmly in place within the shoulder of the envelope.
The graphite anode.
The classic envelope is 64 mm in diameter, and excluding the base pins is 170 mm tall.
Reference: Datasheet

 

Pin Connections
1
2
3
4
5
6
7
f
nc
g2
g1
bp
nc
f

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Pdiss
10
5
2500
800
125W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 19, 2014.
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