Dunlee Low Power Tube |
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Single focus 6” long
oil-immersed tube, probably intended for dental radiography, fitted on its
anode end with an aluminum heat radiator. The tube body is surrounded by a
ceramic-looking cylinder, very opaque to x-rays, with probably lead oxide in
its composition. The tube fits well
inside the cylinder from which it stays separated by small cushions made of
cork agglomerate, fixed to the glass wall of the tube, thus leaving a clear
space for the free circulation of oil inside the cylinder around the tube. Another peculiar
feature is the wire coiling (molybdenum ?) around the base of the filament structure inside
the glass wall of the tube. Grossly speaking, this could be helpful for some adjustments,
during or after manufacture, of the cathode characteristics, of the focal
spot size, and of the cathode-anode spacing. Other technical
specifications not available. |
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