Precision Measurement and Calibration: ElectricityU.S. Government Printing Office, 1968 |
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Page 63
... capacitances between leads or between leads and ground . Stray currents may cause an instrument to read either high or low compared with the actual current flowing to a load . COPPER STRIPS THERMAL JUNCTION HEATER ( PLATINUM ALLOY ) ...
... capacitances between leads or between leads and ground . Stray currents may cause an instrument to read either high or low compared with the actual current flowing to a load . COPPER STRIPS THERMAL JUNCTION HEATER ( PLATINUM ALLOY ) ...
Page 64
... capacitance between the heater circuit and the thermal junction can series - resonate and allow current to bypass the heater . Under this condition , the ammeter indication is low . Also , heater inductance and capacitance between the ...
... capacitance between the heater circuit and the thermal junction can series - resonate and allow current to bypass the heater . Under this condition , the ammeter indication is low . Also , heater inductance and capacitance between the ...
Page 66
... capacitance . Uncertainty in calibrations was about 5 percent at 15 MHz and within 12 percent at 100 MHz . Precision with this method was stated to be 3 percent at the highest test fre- quency and 1 percent at the lower frequencies . In ...
... capacitance . Uncertainty in calibrations was about 5 percent at 15 MHz and within 12 percent at 100 MHz . Precision with this method was stated to be 3 percent at the highest test fre- quency and 1 percent at the lower frequencies . In ...
Page 72
... capacitance C. This circuit , together with the stray inductance and capacitance , is resonant at 30 MHz , which enables one to connect to the internal transmission circuit of the center conductor of the reg- ular coaxial system without ...
... capacitance C. This circuit , together with the stray inductance and capacitance , is resonant at 30 MHz , which enables one to connect to the internal transmission circuit of the center conductor of the reg- ular coaxial system without ...
Page 88
... capacitance should be small , or the operating frequency of the loop should be low compared to its lowest self - resonant frequency . The distributed capacitance will cause the terminal volt- When such a field - strength meter is used ...
... capacitance should be small , or the operating frequency of the loop should be low compared to its lowest self - resonant frequency . The distributed capacitance will cause the terminal volt- When such a field - strength meter is used ...
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Common terms and phrases
accuracy adaptor adjusted ammeter amplifier amplitude approximately attenuator bolometer mount bridge Bureau of Standards calibration calorimeter capacitance cavity characteristic impedance characteristics circuit coaxial line component conductor connectors constant detector device device under test dielectric diode dipole directional coupler effect efficiency Electronic equations field-strength meter frequency range function IEE London IEEE Trans impedance input insertion loss instrument IRE Trans laser limits load magnitude ment method Microwave Theory mismatch error modulation National Bureau noise temperature null obtained ohms oscilloscope output peak percent phase shifter power measurement power meter precision probe Proc pulse pulse power quency R. W. Beatty Radio ratio reference reflection coefficient reflectometer resistance resonator RF power sampling shown in Fig signal skin effect substitution superconductive Tech technique temperature terminal thermistor thermocouple tion transmission line tuner two-port uncertainty voltage voltmeter VSWR wave waveguide wavelength
Popular passages
Page 129 - ... pulse duration. The time interval between the first and last instants at which the instantaneous amplitude reaches a stated fraction of the peak pulse amplitude. pulse duration modulation.