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Home >
Electronic Tutorials >
Electronic Schematic Components Symbols > What is Cathode, Electron-Tube,
Directly Heated |
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Electronics Component Symbols |
What is Cathode, Electron-Tube,
Directly Heated (  )
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A directly heated cathode for an electron tube comprising a base plate made of an alloy containing 20 to 30% by weight of W, 0.12 to 0.28% by weight of Zr and the remainder being Ni and an electron emissive oxide layer disposed directly on the base plate shows good and stable electron emission properties and when it is installed in a television picture tube, the picture tube shows excellent initial properties. |
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