Principles of Electricity and Electromagnetism |
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Page 203
... limited by the cathode temperature . At relatively low potentials where Eq . ( 7.4 ) applies the current is said to be space - charge - limited . At considerably higher potentials the saturation current which is deter- mined by the ...
... limited by the cathode temperature . At relatively low potentials where Eq . ( 7.4 ) applies the current is said to be space - charge - limited . At considerably higher potentials the saturation current which is deter- mined by the ...
Page 268
... limited . Thus if the cathode emission is limited to a lime spot on a hot - metal surface and the pressure is moderately low , electrons are emitted normally and form a narrow pencil of luminous plasma down the tube . The positive - ion ...
... limited . Thus if the cathode emission is limited to a lime spot on a hot - metal surface and the pressure is moderately low , electrons are emitted normally and form a narrow pencil of luminous plasma down the tube . The positive - ion ...
Page 389
... limited to about 1 weber per square meter by the properties of the iron or steel used in the magnetic circuit . The maximum potential developed is further limited by the commutator and insulation . The power put into the generator is ...
... limited to about 1 weber per square meter by the properties of the iron or steel used in the magnetic circuit . The maximum potential developed is further limited by the commutator and insulation . The power put into the generator is ...
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Common terms and phrases
alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction dynamic resistance effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer grad harmonic hence impedance induction integral ions known length linear load magnetic field magnetic moment magnitude maximum measured meter negative obtained ohms oscillations output parallel phase plane plate current positive potential difference potentiometer quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation scalar shown in Fig solution surface temperature terminals theorem torque transconductance triode tube unit vacuum tube vector velocity voltage volts wave wire written zero