An edition of How to become a wireless operator
(1918)
How to become a wireless operator
by Charles B. Hayward
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Subjects
Wireless Telegraph| Edition | Availability |
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1
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Book Details
Table of Contents
CONTENTS
Fundamentals of wireless telegraphy 1
Discovery of electric waves 1
Essentials of wireless method 3
Nature of waves 5
Elementary electrical principles 7
Static and current electricity 7
Potential 10
Conductors 10
Resistance 13
Ohm's law 17
Magnetism 21
Comparison of magnetism and current electricity 21
Magnetic attraction and repulsion 22
Electromagnets 24
Magnetic induction 26
Solenoid 28
Induction 29
Simple induction principle 29
Dynamo principle 31
Transformer principle 33
Mutual induction 33
Inductance, or self-induction 34
Generators 37
Elementary dynamo 37
Alternating-current generators 40
Factors influencing output 42
Phase and phase displacement 43
Direct-current generators 44
Changing elementary dynamo into d.c. type 44
Armature windings. 47
Types of d.c. generators 50
Electric motors 52
Motor-generator 57
Function of motor-generator in wireless work 57
Care of motor-generator 59
Study of circuits and their protection 62
Series circuit 62
Multiple, or parallel, circuit 62
Shunt circuit 64
Open and closed circuits 65
Protective devices 66
Automatic cut-out 68
Alternating-current devices 68
Electrical measurements 69
Practical electrical units 69
Measuring instruments 71
Fundamental wireless phenomena 82
Oscillatory discharge 82
Producing oscillatory discharge 83
Oscillation frequency 85
Damping 86
Resonance 88
Oscillation constant 90
Condensers 92
Electrostatic capacity 92
Dielectrics 93
Types of condensers 94
Action of condenser 100
Condenser discharge 102
Transformers 105
Principle of transformer 105
Closed-core transformer 108
Open-core and magnetic leakage transformers 109
Oscillation transformer 110
Reactance 111
Electromagnetic waves 112
Formation of waves 112
Wave lengths of ether vibrations 113
Production of electromagnetic waves 114
Radiation of waves 115
Characteristics of electromagnetic waves 117
Stationary waves 119
Wave lengths 120
Detection of electromagnetic waves 123
Transmitting apparatus and circuits 126
Symbols used 127
Motor-generators 133
Transformers 133
Condensers 134
Keys 137
Spark gap 139
Oscillation transformer 147
Helix 147
Modern types 148
Aerials, or antennae 151
Types of aerials 153
Aerial construction 157
Aerial change-over switch 160
Transmitting apparatus and circuits (continued)
Transmitting circuits 162
Development of transmitter 162
Relation of wave length to frequency 165
Continuous-wave wireless systems 166
Storage battery 167
Elements of cell 169
Electrolyte 171
Specific gravity 172
Action of cell on charge 172
Action of cell on discharge 173
Capacity of battery 174
Edison cell 177
Care of lead-plate battery 178
Height of electrolyte in cell 178
Specific gravity tests 179
Gassing 185
Sulphating 187
Voltage tests 188
Emergency transmitting apparatus 190
Receiving apparatus and circuits 195
Comparison of transmitting and receiving circuits 195
Detectors 196
Rectified current impulses 197
Crystal detectors Y. 199
Vacuum-valve detectors 204
Tuning devices 209
Loose coupler 210
Variometer 212
Miscellaneous types of receivers 213
Test buzzer 213
Telephone receivers 215
Receivers of undamped oscillations 216
Receiving circuits 219
Directly coupled circuits 220
Inductively coupled circuits 222
Explanation of coupling 226
Tuning circuits 229
Tuning transmitter 229
Tuning receiver 237
Operating problems 243
Interference 243
Static 245
Learning the code 247
Commercial traffic regulations 252
Government examination questions 258
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| September 12, 2020 | Edited by MARC Bot | import existing book |
| December 6, 2010 | Edited by Open Library Bot | Added subjects from MARC records. |
| December 10, 2009 | Created by WorkBot | add works page |