The Cathode Ray Tube site
electronic glassware
History and Physics Instruments
electronic glassware
History and Physics Instruments
X-Ray tubes
Mysterious rays
Mysterious rays
PREV
HOME
The second page
More modern rotating Anode X-Ray tubes
A Siemens and a Nago mid 20th century.
A Siemens and a Nago mid 20th century.
Burn marks on the target.
Burning tube, only heater!
Siemens Kenotron HV X-Ray rectifying tube.
125 KV 1400mA used for X-Ray power supply.
Click on the tube to see the burning filament.
125 KV 1400mA used for X-Ray power supply.
Click on the tube to see the burning filament.
Siemens Reiniger-werke V150/1502p
A huge 55cm X-Ray Kenotron for Greinacher/Villard circuit.
Used in the first half of the 20th century.
A huge 55cm X-Ray Kenotron for Greinacher/Villard circuit.
Used in the first half of the 20th century.
Kenotrons were rectifier tubes (valves) for the
very high tensions needed for the X-Ray tubes.
In German known as ventilröhre.
very high tensions needed for the X-Ray tubes.
In German known as ventilröhre.
Philips Kenotron type 28136
1400mA 125KV
1400mA 125KV
William Coolide invented the "Hot"Cathode
X-Ray tube in 1913. Click on the picture to visit
the site of the Harvard square library for a
complete biography.
X-Ray tube in 1913. Click on the picture to visit
the site of the Harvard square library for a
complete biography.
William David Coolidge
1873-1975
1873-1975
Triple cascade X-Ray tube in the lab of dr. Coolidge 1928
In this lab model every bulb is fed with 300KV, the tube was 2,4 meter long with bulb diameters of 30cm!
In this lab model every bulb is fed with 300KV, the tube was 2,4 meter long with bulb diameters of 30cm!