《THEORY AND DESIGN OF VALVE OSCILLATORS》

CHAPTER ⅠTYPES OF L．C．OSCILLATORS1

1．Applications of valve oscillators1

2．Types of valve oscillators3

3．Classification of valve oscillators5

4．Dynatron oscillators5

5．L．C．transitron oscillators9

6．Triode oscillators10

CHAPTER ⅡCONDITIONS FOR MAINTAINING OSCILLATION IN L．C．OSCILLATORS16

7．Conditions required to maintain oscillation in a tuned circuit16

8．Limitation of the oscillatory current—a graphical treatment of the problem20

9．Utility of the results obtained by the graphical analysis27

10．Conditions necessary to maintain oscillation in dynatron systems31

11．Conditions necessary to maintain oscillation in triode systems32

CHAPTER ⅢAMPLITUDE AND WAVE-FORM OF OSCILLATORY CURRENT AND EFFICIENCY OF L．C．OSCILLATORS40

12．Elementary treatment of amplitude and efficiency40

13．More exact theory of oscillation45

14．Wave-form of the oscillatory current61

CHAPTER ⅣFREQUENCY OF L．C．OSCILLATORS66

15．Introduction66

16．Reasons for inadequacy of the simple theory69

17．Dependence of frequency on harmonies70

18．Effect on frequency of valve inter-electrode capacitance76

19．Practical significance of frequency variations produced by the maintaining system87

20．Magnitude and causes of frequency drift in L．C．oscillators89

21．Frequency drift associated with the oscillation circuit90

CHAPTER ⅤFREQUENCY STABILITY OF L．C．OSCILLATORS94

22．Importance of frequency stability94

23．Causes of frequency instability94

24．Frequency variation produced by change of inductor resistance with temperature95

25．Effects of change of current distribution in inductors with tempera-ture98

26．Frequency variation produced by change of inductor inductance106

27．Frequency variation due to change of inductor self-capacitance120

28．Performance of typical inductors122

29．Effects on capacitors produced by temperature change125

30．Variation of capacitance due to dielectric126

31．Variation of capacitance due to mechanical deformation132

32．Electrical power loss in capacitors141

33．Effects of thermal properties of materials upon rate of change of capacitance with temperature variation143

34．Performance of typical capacitors150

CHAPTER ⅥFREQUENCY STABILISATION OF L．C．OSCILLATORS155

35．Methods of stabilising the maintaining system by choice of circuit values155

36．Stabilisation of inductance162

37．Stabilisation of inductance by maintenance of constant dimensions163

38．Stabilisation of inductance by compensation for radial expansion by control of axial expansion170

39．Stabilisation of solid-dielectric capacitors176

40．Stabilisation of air-dielectric capacitors178

41．General design principles for air-dielectric capacitors of high electrical stability188

42．Use of special circuit arrangements191

CHAPTER ⅦR．C．OSCILLATORS208

43．Applications and types of R．C．oscillators208

44．Relaxation oscillators210

45．The R．C．transitron oscillator213

46．Phase-shift oscillators214

CHAPTER ⅧCRYSTAL OSCILLATORS226

47．The crystal resonator226

48．The crystal and its mounting230

49．The crystal oscillator234

CHAPTER ⅨULTRA-HIGH FREQUENCY OSCILLATORS238

50．Types of ultra-high frequency oscillators238

51．Butterfly oscillators239

52．Resonant-line oscillators240

53．Coaxial-line oscillators245

54．Coaxial butterfly oscillators254

CHAPTER ⅩVELOCITY-MODULATED OSCILLATORS256

55．Klystron oscillators260

56．Retarding-field oscillators267

57．Reflex oscillators274

CHAPTER ⅪMAGNETRON OSCILLATORS283

58．The direct-current magnetron oscillator283

59．The negative-resistance or split-anode magnetron286

60．The transit-time magnetron oscillator290

61．The rotating-field or cavity magnetron292

62．Description of cavity magnetron293

63．Method of operation297

64．Performance of cavity magnetron300

Bibliography304

Index311