Advanced Electrical Measurements |
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Page 120
... element vacuum tube can be made large , assuming that the cathode gives sufficient emission , by increasing the ... Element Tube . The usefulness of the vacuum tube described in the previous article may be greatly extended by the ...
... element vacuum tube can be made large , assuming that the cathode gives sufficient emission , by increasing the ... Element Tube . The usefulness of the vacuum tube described in the previous article may be greatly extended by the ...
Page 121
... element tube . V1 , V2 and V3 refer to plate voltages . well evacuated , so that few positive ions will be present ... element tube operating at constant cathode tempera- ture . The decrease in plate current beyond the saturation [ 62 ] ...
... element tube . V1 , V2 and V3 refer to plate voltages . well evacuated , so that few positive ions will be present ... element tube operating at constant cathode tempera- ture . The decrease in plate current beyond the saturation [ 62 ] ...
Page 129
... Element Electrometer Tubes . As was pointed out in Art . 64 , the ordinary three electrode tube has a definite lower limit of the currents which it may amplify , due to the current flow between the filament [ 65 ] FOUR ELEMENT ...
... Element Electrometer Tubes . As was pointed out in Art . 64 , the ordinary three electrode tube has a definite lower limit of the currents which it may amplify , due to the current flow between the filament [ 65 ] FOUR ELEMENT ...
Contents
CHAPTER PAGE | 1 |
NUMBER PAGE 1 Measurement of Specific Resistance | 21 |
Calibration of a CareyFoster Slide Wire | 28 |
Copyright | |
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a₁ accuracy adjustment alternating current ammeter ampere amplifier apparatus as shown approximately audio balance battery C₁ calculate calibration capacitance charge coil condenser connected constant correction couple current flows cycle damping decrease deflection detector determined dial direct current electrical electrodynamometer electrometer electromotive force electrons element equal equation EXPERIMENT filament flux frequency oscillator galvanometer gauge high resistance impedance input inserted instrument ions junction Leeds and Northrup manometer maximum McLeod Gauge measured mercury metal meter method mutual inductance necessary negative obtained ohms operating oscillograph output plate circuit plate current positive potential difference potentiometer pressure pyrometer quantity R₁ R₂ radio frequency range ratio reading relaxation oscillator resistor scale screen sensitivity shown in Fig shunt slide wire solution standard cell supply switch temperature terminals thermocouple torque unknown V₁ vacuum tube vacuum tube voltmeter variable volt voltmeter volts wave length Wheatstone bridge zero