24 pages matching beam tetrode in this book
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The Emission of Electrons from a Metal
Electronic Conduction in a Vacuum
28 other sections not shown
alloy amplifier amplitude anode anode current applied assembly atoms axis barium beam current beam tetrode bombardment capacitance carriers cathode cathode-ray tube causes characteristics circuit collector component conductivity constant crystal decreases deflection deflector density devices diode discharge effect efficiency electric field electron beam electron-volts emitter energy envelope equation frequency germanium give glow grid heating iconoscope impedance impurity increases inductance input insulator interaction ionisation junction klystron layer limited load magnetic field magnetron material maximum Mc/s metal minimise modulation molecules noise obtained operating oscillation output oxide p-n junction pentode phosphor photocathode positive ions potential pressure produce pulse pump r.f. field radiation ratio reduced resistance resonator screen seal secondary emission semi-conductor shown in Fig signal space space-charge surface switch target temperature tetrode thermal thermionic thermionic emission TR cells transistor triode tube tungsten typical vacuum valve vapour variation velocity voltage wave wave-length waveguide zero