Principles of Electricity and Electromagnetism |
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Page 215
... amplifier is known as class C. The discussion of this type will be postponed till a later chapter as its chief use is with a tuned load as a power amplifier at radio frequencies . In this application it has a very high efficiency ...
... amplifier is known as class C. The discussion of this type will be postponed till a later chapter as its chief use is with a tuned load as a power amplifier at radio frequencies . In this application it has a very high efficiency ...
Page 505
... Amplifiers . - A class C amplifier is one in which the negative - grid bias is so great that plate current flows for much less than half of a cycle . The preceding analysis is only very approximately appli- cable to this case , since ...
... Amplifiers . - A class C amplifier is one in which the negative - grid bias is so great that plate current flows for much less than half of a cycle . The preceding analysis is only very approximately appli- cable to this case , since ...
Page 529
... amplifier , show that optimum stability is achieved if Af cos 1 , in which case A , A cot p . 7. Assuming that the approximate analysis of the class B amplifier is also appli- cable to the class C type , show that Ipl = HDE arp + R π ...
... amplifier , show that optimum stability is achieved if Af cos 1 , in which case A , A cot p . 7. Assuming that the approximate analysis of the class B amplifier is also appli- cable to the class C type , show that Ipl = HDE arp + R π ...
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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