Journal of Research of the National Bureau of Standards: Engineering and instrumentation. C, Volumes 72-75U.S. Government Printing Office, 1968 |
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Page 49
... voltage ratio and phase angle deviations of inductive voltage dividers utilizes specially constructed transformers for step and differential voltage injections without reference to the fundamental electrical units or standards . Con ...
... voltage ratio and phase angle deviations of inductive voltage dividers utilizes specially constructed transformers for step and differential voltage injections without reference to the fundamental electrical units or standards . Con ...
Page 50
... voltage differences between the " common " terminals in such " four - terminal " devices , due to internal pickup ... voltage difference acr + jẞ " Tr ( fig . 3 ) is reduced by addition of the shielding to the connecting wire from about ...
... voltage differences between the " common " terminals in such " four - terminal " devices , due to internal pickup ... voltage difference acr + jẞ " Tr ( fig . 3 ) is reduced by addition of the shielding to the connecting wire from about ...
Page 51
... voltage divider D3 , injects , through the R - C network and transformer T2 , in - phase and quadrature differential balancing voltages , a + jẞ , in the same connecting lead . The detector circuit consists of a tuned null - indicator ...
... voltage divider D3 , injects , through the R - C network and transformer T2 , in - phase and quadrature differential balancing voltages , a + jẞ , in the same connecting lead . The detector circuit consists of a tuned null - indicator ...
Page 52
... voltage divider , D. , is used to supply the voltages of the guard circuits . Circuit 1 is connected to the " tap " output terminal of the guard divider , with its dials set corre- sponding to that of the adjacent test divider ( i.e. ...
... voltage divider , D. , is used to supply the voltages of the guard circuits . Circuit 1 is connected to the " tap " output terminal of the guard divider , with its dials set corre- sponding to that of the adjacent test divider ( i.e. ...
Page 53
... voltage ratio of T4 . ( The necessity for subtracting 0.5 from the dial readings of D3 arises from the fact that the ... voltage , v the step - injection voltage of transformer T : a + jẞ and a + jẞ the small balancing voltages from ...
... voltage ratio of T4 . ( The necessity for subtracting 0.5 from the dial readings of D3 arises from the fact that the ... voltage , v the step - injection voltage of transformer T : a + jẞ and a + jẞ the small balancing voltages from ...
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accuracy admittance alloys analysis application approximately atomic attenuation bolometer Bolovac bridge Bureau of Standards calculated calibration calorimeter capacitance capacitor Chem circuit coaxial coefficient connectors constant creep Cryogenic crystal curves density described detector determined dew point disk effect electrical electron electron probe microanalysis energy equation error evaluation experimental field film flow frequency function heat hydrometer IEEE impedance input Instr Instrumentation Vol Key words laser linear liquid load magnetic materials measurements ment meter method microwave Mössbauer effect Mössbauer spectroscopy National Bureau obtained optical oscilloscope output paper parameters percent Phys precision pressure Proc properties pulse radiation range ratio reference resistance resistors resonance sample shown in figure solution specimen spectra stress surface Tech techniques temperature thermal thermal conductivity thermocouple thermodynamic thiosulfate tion Trans tube tungsten uncertainty values vapor voltage waveguide wet-bulb wet-bulb temperature wire x-ray
Popular passages
Page 28 - In no case does such identification imply recommendation or endorsement by the National Bureau of Standards, nor does it imply that the material or equipment identified is necessarily the best available for the purpose.
Page 46 - THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates...
Page 25 - Passenger comfort is one of the most important factors to be considered in the design of these facilities and this also applies to the waiting rooms, rest rooms, lunch and dining rooms.
Page 21 - ... (1) nuclear data, (2) atomic and molecular data, (3) solid state data, (4) thermodynamic and transport data, (5) chemical kinetics, (6) colloid and surface properties, and (7) mechanical properties.
Page 82 - These include the development and maintenance of the national standards of measurement and the provision of means and methods for making measurements consistent with these standards...
Page 23 - The procedure uses the x and y coordinates and the individual directions of the minutiae ( ridge endings and bifurcations). The identity of the...
Page 22 - This publication contains a descriptive listing, item by item, of most of the test and calibration work done at the National Bureau of Standards with the respective fees.
Page 16 - Maryland, and by the Division of Biology and Medicine of the United States Atomic...