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CV2109

Sensibly equivalent to:
BT89 VX4099
    
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The CV2109 is a small Xenon Thyratron that would have been designed as a pulse modulator. The prototype was the VX4099.
The anode can swing to -1,500 Volts and the grid can reach -100 Volts. The mean anode current is given but the peak current is 2 Amps. That is a 2 kW pulse switching ability.
The wide glass tube envelope is 36 mm in diameter, and excluding the B4 base pins is 99 mm tall.
Reference: Datasheet.

 

Pin Connections
B4
1
2
3
4
tc
-
g1
f
f
a

 

Absolute Maximum Operating Conditions
Thyratron
Vh
Ah
Va
Vg
mAa
2.5
5.0
1,000
-
0.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 21, 2014.
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