Siemens ERG 80







Out of a total length of 9(22.5cms) the tube proper is only about 7(17.5cms) long. It is a single focus tube of the line-focus type with a hooded anode fitted with a beryllium window. It dates back to the forties. It comes from an old portable x-ray machine.


From the attached exposure table copied from the Internet, the ratings of this tube, used without any rectification, would have been about 3.5 KW, with a maximum anode voltage of 90 Kv

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