## Principles of Electricity and Electromagnetism |

### From inside the book

Results 1-3 of 83

Page 201

CHAPTER VII THERMIONIC WACUUM

was seen that electrons are liberated from a conducting surface if the latter is

maintained at a sufficiently high temperature. If this hot surface is in the presence

of ...

CHAPTER VII THERMIONIC WACUUM

**TUBES**7.1. The Diode.—In Sec. 6.4 itwas seen that electrons are liberated from a conducting surface if the latter is

maintained at a sufficiently high temperature. If this hot surface is in the presence

of ...

Page 217

amplified by the use of a

ideally suited for

circuits. Figure 7.16 indicates a typical simple circuit. The - it drops in the

resistances 1-4 ...

amplified by the use of a

**tube**. On the other hand, photoelectric currents areideally suited for

**tube**amplification as they are developed in highresistancecircuits. Figure 7.16 indicates a typical simple circuit. The - it drops in the

resistances 1-4 ...

Page 497

Likewise the maximum plate-circuit efficiency, which is the ratio of this quantity to

E.I, is approximately Eos36r,I,. This is quite small. Inserting the constants of a type

10

Likewise the maximum plate-circuit efficiency, which is the ratio of this quantity to

E.I, is approximately Eos36r,I,. This is quite small. Inserting the constants of a type

10

**tube**, for instance, (E, = 425 volts, I, + 0.018 amp., rn = 5,000 ohms) yields P ...### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Other editions - View all

### Common terms and phrases

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