H. B. Brooks

RCA (United States)

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F. M. Defandorf

National Institute of Standards and Technology

F.C. Holtz

IIT Research Institute

Ken Walker

Infrared Laboratories (United States)

F. C. Weaver

F.W. Glading

State Street (United States)

Hugh L. Dryden

National Aeronautics and Space Administration

Whitney Canada

State Street (United States)

Burton McCollum

United States Government Publishing Office

F. B. Silsbee

National Institute of Standards

E. B. Rosa

Universidad de Los Lagos

Cooperative Institutions

National Institute of Standards and Technology

State Street (United States)

United States Department of Commerce

National Institute of Standards

Infrared Laboratories (United States)

General Dynamics (United States)

National Aeronautics and Space Administration

Sorbonne Université

Trinity College

Springer Nature (Germany)

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The unit of Electrical resistance

Electrical Engineering (1932)

H. B. Brooks

The mercury ohm, long recognized as a standard of resistance, with its elaborate technique and many disadvantages has become obsolescent. The reasons for this, together with a brief historical sketch of the ohm, are presented in this article.

Sketch

10.1109/ee.1932.6429806

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Citations (0)

A deflection potentiometer for voltmeter testing

Bulletin of the Bureau of Standards (1908)

H. B. Brooks

Potentiometer

Voltmeter

10.6028/bulletin.087

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Citations (2)

A Summary of Some Radar Thunderstorm Observations*

Bulletin of the American Meteorological Society (1946)

H. B. Brooks

Direct observation of rain areas by radar yields new information on thunderstorm characteristics and behavior. A statistical summary of characteristics of 300 showers observed by radar at Spring Lake, N. J., June–Aug. 1945, is given.

Weather radar

10.1175/1520-0477-27.10.557

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Citations (22)

A variable self and mutual inductor

Bulletin of the Bureau of Standards (1917)

H. B. Brooks F. C. Weaver

10.6028/bulletin.316

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Citations (5)

Best Arrangement of Resistors in a Series Group

Review of Scientific Instruments (1950)

H. B. Brooks

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Herbert B. Brooks; Best Arrangement of Resistors in a Series Group. Rev. Sci. Instrum. 1 May 1950; 21 (5): 491. https://doi.org/10.1063/1.1745619 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioReview of Scientific Instruments Search Advanced Search |Citation Search

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10.1063/1.1745619

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Citations (1)

The Two-Stage Current Transformer

Transactions of the American Institute of Electrical Engineers (1922)

H. B. Brooks F.C. Holtz

This paper presents a brief discussion of the current transformer as used with measuring and controlling apparatus with special reference to the degree of accuracy which can be attained in the ratio and phase angle. A new type of current transformer is then described, in which it is possible to secure much higher accuracy with a given amount of iron and copper in the transformer. In this new device the transformation is effected in stages, the first yielding in the usual way a secondary current which is approximately correct in magnitude and phase, and the second yielding an auxiliary corrective current which, when combined with the first secondary current, gives a resultant current which very closely approximates to the secondary current which would be furnished by an ideal current transformer having no errors. The two currents may easily be combined by having two like windings in the devices operated, one for the main and one for the auxiliary secondary current. The mathematical theory of the two-stage current transformer is developed and applied. Experimental curves are given to compare the performance of the new transformer with that of an ordinary simple current transformer of good average performance. The effect of mutual inductance between the external secondary circuits is discussed, and some of the special advantages of the new transformer are given.

Delta-wye transformer

Energy efficient transformer

Autotransformer

Leakage inductance

Transformer effect

Transformer types

10.1109/t-aiee.1922.5060791

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Citations (48)

Outline of design of deflection potentiometers, with notes on the design of moving coil galvanometers

Journal of the Franklin Institute (1912)

H. B. Brooks

10.1016/s0016-0032(12)90651-1

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Citations (1)

Investigation of cartridge-inclosed fuses.

Technologic papers of the Bureau of Standards (1916)

E. B. Rosa H. B. Brooks Burton McCollum Whitney Canada F.W. Glading

5. Economy fuse used until it burns up 194 6.Evidence of actual fires caused not within our reach. .

Cartridge

10.6028/nbst.2644

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Citations (6)

A new potentiometer for the measurement of electromotive force and current

Bulletin of the Bureau of Standards (1906)

H. B. Brooks

Instruments for the measurement of electromotive force and cur- rent may be divided into two main classes.In those of the first class, which may be called deflection instruments, a movement of one element of the instrument is produced against an opposing force, an indication of the quantity to be measured being given by the extent of the motion, as shown by an index moving over a graduated scale.To this class belong many types of ammeters and voltmeters, such as the moving coil, the magnetic vane, electro- dynamometer, hot wire, and electrostatic instruments.Those of the second class may be called balance instruments.In these the electric quantity to be measured exerts a force which is opposed by another force, an adjustment of the instrument being made until no motion results, when the quantity to be measured is determined by the extent of the necessary adjustment.To this class belong Wheatstone bridges, potentiometers, and Kelvin balances.Each of these two classes of measuring instruments has its advan- tages and disadvantages.The deflection instrument can not be read, as a rule, with an accuracy greater than one part in a thousand; while on account of zero errors, inaccuracy of the scale, heating due to the current, changes of external temperature, stray magnetic fields, and other disturbing influences, the accuracy really obtained in the result is much lower than this.It is possible, of course, to determine and allow for some of these errors, but others, such as those due to stray field, are not easily allowed for.The balance instrument can usually be read with greater accuracy, and in the 225

Potentiometer

Electromotive force

Counter-electromotive force

10.6028/bulletin.036

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Citations (5)

A SIMPLE TIME METER

Review of Scientific Instruments (1931)

H. B. Brooks

First Page

10.1063/1.1748801

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Citations (0)