Principles of Electricity and Electromagnetism |
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Page 433
... frequency resistance is available , the resistance of the circuit itself may be checked by this measurement . If an unknown impedance is connected ( a ) across the lower terminals of the FIG . 13.6 . - Typical high - frequency resis ...
... frequency resistance is available , the resistance of the circuit itself may be checked by this measurement . If an unknown impedance is connected ( a ) across the lower terminals of the FIG . 13.6 . - Typical high - frequency resis ...
Page 459
... frequencies ; ( b ) high frequencies . of the transformer in these frequency regions can be deduced by con- sidering these simple circuits . The potential transformer has a high resistance load such as the grid circuit of a vacuum tube ...
... frequencies ; ( b ) high frequencies . of the transformer in these frequency regions can be deduced by con- sidering these simple circuits . The potential transformer has a high resistance load such as the grid circuit of a vacuum tube ...
Page 473
... frequency limits of the oscillating crystal element are from about 50 kilocycles to 15 megacycles . The Qo value in the neighborhood of 0.1 megacycle is of the order of 104 , which means that a change of only 5 cycles in the applied ...
... frequency limits of the oscillating crystal element are from about 50 kilocycles to 15 megacycles . The Qo value in the neighborhood of 0.1 megacycle is of the order of 104 , which means that a change of only 5 cycles in the applied ...
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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