## Principles of Electricity and Electromagnetism |

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Page 211

If any

same as eo, the potential wave applied to the

...

If any

**grid**current is drawn and re is not negligible, the variation e, will not be thesame as eo, the potential wave applied to the

**grid**circuit. The maximum positive-**grid**excursion will be smaller than the maximum positive value of eo by the drop...

Page 262

Gas or vapor discharges can be used for power-control purposes if one or more

different from that in a high-vacuum tube, for once the discharge starts, the ...

Gas or vapor discharges can be used for power-control purposes if one or more

**grids**are inserted between the cathode and anode. The action of the**grid**is quitedifferent from that in a high-vacuum tube, for once the discharge starts, the ...

Page 263

positive

electrons reach it from the cathode, even before the discharge starts. And after

breakdown there must be a protective series resistance to lower its potential and

limit the ...

positive

**grid**. The positive-**grid**tube, of course, draws more**grid**power aselectrons reach it from the cathode, even before the discharge starts. And after

breakdown there must be a protective series resistance to lower its potential and

limit the ...

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alternating current alternating-current amplitude angle angular velocity anode antenna applied approximately armature assumed atom axis calculated capacity cathode centimeter characteristic circuit coefficient coil component condenser conducting conductor considered curl current flowing curve deflection density determined dielectric constant direct-current direction discharge displacement distance effective electric field electromotive force electrons electrostatic element energy equal equation ferromagnetic flux force frequency function galvanometer given grad grid hence hysteresis impedance induction integral ions known Laplace's equation linear load magnetic field magnetic moment magnitude maximum measured meter motor negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potentiometer produced proportional quantity radiation radius ratio reactance region represents resistance resonant rotation Show shown in Fig solenoid solution substance surface temperature terminals theorem torque transformer tube unit vector voltage volts wave wire written zero