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Philips sold a family of 150mA series heater tubes under this letter in South America [7] P – 300 mA AC/DC series heater; Q – 2.4 V, indirectly heated; R – Not assigned to avoid any confusion with the older Telefunken "R" system; S – 1.9 V, indirectly heated; T – Custom heater; U – 100 mA AC/DC series heater; V – 50 mA AC/DC ...
EL151 – Power pentode, Y10A steel tube 10-pin base; EL152 – 40 W AF/SW/VHF Radiation-cooled power pentode. EL112 or EL401 with a B10V glass 10-pin base with one big pin for the anode; FL152 with a different heater; EL153 – SW/VHF power pentode; EL156 – Power pentode, Y10A steel tube 10-pin base; EL171 – 4-Watts Power pentode, gnome tube
For lower-voltage lower-power requirements, rectifiers with 6.3V heaters and insulated cathodes such as the EZ80 were used, connected to the common filament supply. There is no special nomenclature for EHT rectifiers for cathode-ray tubes; the EY51 and EY86 were rated at 17kV with an average current of 350 microamps. [3]
A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [2] The images may represent electrical waveforms on an oscilloscope , a frame of video on an analog television set (TV), digital raster graphics on a computer monitor , or ...
The X-ray tube is a type of cathode-ray tube that generates X-rays when high voltage electrons hit the anode. [ 91 ] [ 92 ] Gyrotrons or vacuum masers, used to generate high-power millimeter band waves, are magnetic vacuum tubes in which a small relativistic effect, due to the high voltage, is used for bunching the electrons.
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