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XB1

 
See also:
XB1 & XB2 Advert
    
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The XB1 is a barretter or current stabilising device. Normally barretters have iron wire as the active element in a hydrogen atmosphere. The XB1 was designed to stabilise a current of 300 mA in heater chains. In use the voltage drop was designed to be 9 to 16 volts and the current to be stabilised at that voltage drop.
The iron wire is draped over two supports.
A closer view of the coiled wire
The thin glass tube envelope is 18 mm in diameter, and excluding the B7G base pins, is 46 mm tall.
Reference: 1040.

 

Pin Connections
B7G
1
2
3
4
5
6
7
-
-
r
r
-
-
-

 

Updated November 03, 2016.
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