Chapter titles include ...(1) Introduction ...(2) The Effect of Cathode Operating Temperature on Tube Life ...(3) The Effect of Bulb Temperature on Tube Life ...(4) Advantages and Disadvantages of Cathode Bias ...(5) Bias Circuits ...(6) Cathode-Current Stability and Maximum Permissible Grid Resistance ...(7) Correlation Between Cathode Current and Other Tube Properties ...(8) Effects of Structure on Pentodes, Tetrodes, and Beam-Power Tubes ...(9) Limitation of Screen-Grid Dissipation by Series Resistor ...(10) Use of a Screen Resistor Permitting Higher Values of Control-Grid Resistance ...(11) Development of Composite Operating Curves ...(12) Probable Operating Conditions of a Four-Tube String ...(13) Comparison with Constant Voltage Operation ...(14) Application of Composite Heater Voltage-Current Curves ...(15) Transient Conditions ...(16) The "Honeycomb" Construction ...(17) Warm-Up and Operating Time ...(18) Heater-Cathode Leakage ...(19) Parallel Operation of Electron Tubes ...(20) Application Data on 20 Tube Types Covered in MIL-STD-200D ...(21) Tube Data.