Basic principles of the action of a radio valve
Physical cnception of electrons and electric currents
Electron emission
Secondary emission
The principal compnoents of a radio valve
The construction of radio valves
The manufacture of radio valves
The function of radio valves
Coventional method of representing valve electrodes in circuit diagrams
Classification and function of radio valves
Properties of the valves
Action of the various grids
Valve capacities
Consequences of curvature of the characteristic
Representation of the transfeer characteristic by exponential series and its application
Final or Power amplification
Rectification of the RF or IF signal
Mains voltage rectifiers
Generation of oscillations
Frequency conversion
Automatic volume control
Noise of amplifying valves
Short-wave properties of amplifying valves
Tuning indicators
Negative feedback
Hum arising from the mains
Microphonic effect
Phenomena occurring during the life of a valve
Possible disturbances due to secondary emission from insulating parts in the wave
Feeding of the valves
The sensitivity of a receiver or an amplifier
APPENDIX