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electrical conduction in solids
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action alternating current anode applied armature atoms capacitor cathode cathode-ray tube cell characteristic circuit of Fig coil cold cathode collector component conduction constant core Courtesy General Electric current flows curve cycle deflection device dielectric heating direct current discharge elec electric field electrons emission emitter employed equation factor feedback filament firing flux frequency function gaseous germanium given in Fig grid half-wave heating hot cathode ignitron illustrated in Fig induction induction heating input ionization light load magnetic amplifier magnitude mercury metal n-type negative ohms operation oscillator output oxide p-n junction particles peak phase shift phototube plate current positive ions potential produce pulse relay resistance resistor resulting rise saturable reactor selenium semiconductor shown in Fig signal space charge speed supply surface switch temperature thyratron tion transformer transistor triode tungsten unit vacuum tubes varying voltage drop volts welding X-ray zero