High electrical resistance composite magnets of Sm2Fe17N3 powders coated with ferrite layer for high frequency applications

2008 ◽  
Vol 103 (7) ◽  
pp. 07E129 ◽  
Author(s):  
N. Imaoka ◽  
Y. Koyama ◽  
T. Nakao ◽  
S. Nakaoka ◽  
T. Yamaguchi ◽  
...  
Keyword(s):  
Electrical Resistance ◽  
High Frequency ◽  
High Electrical Resistance ◽  
Ferrite Layer

MONEL ALLOY 401

Alloy Digest ◽  
1970 ◽  
Vol 19 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Temperature Coefficient ◽  
Nickel Alloy ◽  
Electrical Resistance ◽  
Heat Treating ◽  
High Electrical Resistance ◽  
Good Corrosion Resistance ◽  
Copper Nickel Alloy

Abstract MONEL alloy 401 is a copper-nickel alloy with high electrical resistance and is used primarily in specialized electrical and electronic applications. It has a negligible temperature coefficient of electrical resistance and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: Cu-216. Producer or source: Huntington Alloy Products Division.

scholarly journals AN EXPERIMENTAL STUDY OF DIATHERMY

1927 ◽  
Vol 46 (5) ◽  
pp. 715-734 ◽  
Author(s):  
Ronald V. Christie ◽  
Carl A. L. Binger
Keyword(s):  
Electrical Resistance ◽  
High Frequency ◽  
Skin Effect ◽  
Current Flow ◽  
Homogeneous Medium ◽  
Local Heat ◽  
The Body ◽  
Technical Error ◽  
Theoretical Considerations ◽  
Maximal Heating

The principles governing the passage of high frequency currents through various conductors have been discussed and exemplified in experiments done on both non-living and living bodies. In Part I it was shown: (1) That the current takes the path of least electrical resistance rather than the shortest path; (2) that maximal heating occurs at the point of greatest concentration of the lines of current flow. In a homogeneous medium with parallel electrodes maximal heat production occurs in those portions of the medium adjoining the electrodes and the heat gradient is from without inward. Under these circumstances maximal heating never occurs at the center. In discussing the localization of heat not only the electrical resistance and current concentration, but also the cooling effect, must be considered. In experiments on the dog's cadaver no evidence of the so called "skin effect" could be demonstrated. This is in contradistinction to the findings of Bettman and Crohn, but the discrepancy is explained on the basis of what we believe to be a technical error in their work. The finding of no "skin effect" is in agreement with the conclusions of Dowse and Iredell, based on both experimental and theoretical considerations. In Part II three types of experiments were performed on the anesthetized dog. The conclusions to be derived from them are these: (1) The heat gradient of the body is reversed during diathermy and heating occurs from without inward; (2) deep heating during diathermy is greater than that which results from the application of local heat to the skin; (3) the lung can be heated by diathermy in spite of simultaneous cooling of the chest wall. These experiments we regard as satisfactory evidence of the passage of the current through the interior of the body.

ESTIMATION OF APPLE ROOTSTOCK VIGOR BY THE ELECTRICAL RESISTANCE OF LIVING SHOOTS

1961 ◽  
Vol 39 (7) ◽  
pp. 1585-1589 ◽  
Author(s):  
C. D. Taper ◽  
R. S. Ling
Keyword(s):  
Electrical Resistance ◽  
Direct Relationship ◽  
Needle Electrode ◽  
Apple Rootstock ◽  
Apple Rootstocks ◽  
High Electrical Resistance ◽  
Close Resemblance ◽  
Model C ◽  
Daily Periodicity

Electrical resistances of living shoots of 13 apple rootstocks varying in vigor from very dwarfing to very vigorous were measured. A portable, battery-powered Bouyoucos Model C bridge was used, equipped with needle electrode probes that completely penetrated the bark. Data obtained on shoots of the previous year's growth revealed a direct relationship between the electrical resistance of shoots and the known rootstock effect on scion vigor. Dwarfing and vigorous rootstocks had low and high electrical resistance respectively. When resistance was plotted against time there was a close resemblance to curves for daily periodicity of transpiration.

Formation of a High-Electrical-Resistance Region in InP by Ga Ion Implantation

1989 ◽  
Vol 28 (Part 2, No. 12) ◽  
pp. L2119-L2121 ◽  
Author(s):  
Hajime Asahi ◽  
Hitoshi Sumida ◽  
Soon Jae Yu ◽  
Shuichi Emura ◽  
Shun-ichi Gonda ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Electrical Resistance ◽  
High Electrical Resistance

Concentration Fluctuation Spectra in Turbulent Slurry Pipeline Flow

1989 ◽  
Vol 111 (3) ◽  
pp. 317-323 ◽  
Author(s):  
R. J. Sumner ◽  
C. A. Shook ◽  
M. C. Roco
Keyword(s):  
Cross Section ◽  
Electrical Resistance ◽  
High Frequency ◽  
Particle Diameter ◽  
Low Frequency ◽  
Frequency Spectra ◽  
Concentration Time ◽  
Solids Concentration ◽  
Slurry Flows ◽  
Effective Domain

Using probes responding to changes of slurry electrical resistance with concentration, time spectra of longitudinal concentration fluctuations in turbulent slurry flows have been measured. The sensors, with an effective domain approximately 1 mm in diameter, showed the spectra to be relatively insensitive to location within the pipe cross section. High frequency spectra were found to be relatively insensitive to slurry concentration and particle diameter. Low frequency spectra showed fluctuation amplitudes which increased with solids concentration.

CUPROTHAL 49 & 49TC

Alloy Digest ◽  
2010 ◽  
Vol 59 (6) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Electrical Resistance ◽  
High Electrical Resistance

Abstract Cuprothal 49/49TC is a very clean alloy with high electrical resistance. Uses include precision resistors. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming. Filing Code: CU-784. Producer or source: Kanthal Corporation.

State verification scheme for means of measuring DC and AC electrical resistance

2021 ◽  
pp. 26-30
Author(s):  
Mark D. Klionsky ◽  
Igor A. Samodurov
Keyword(s):  
Electrical Resistance ◽  
High Frequency ◽  
Measuring Instruments ◽  
Shunt Resistance ◽  
Working Standard ◽  
Verification Scheme ◽  
The Status ◽  
State Verification Scheme ◽  
Working Standards ◽  
First Time

The need to develop a new state verification scheme (SVS) is caused by the emergence of high-precision bridges, resistance measures and boxes with a low temperature coefficient (0,02–0,5) ppm/К, highly stable transient measures, electronic resistance calibrators, and high frequency resistance measures. Recommendations how to assign the status of a working standard to measures, R-meters and measuring shunts with accuracy from 0,005 % to 0,500 %, sufficient for verification of measuring instruments, are given. SVS consists of two parts: part 1 covers electrical resistance measures, boxes and R-meters, part 2 – to measuring shunts and shunt resistance meters. Part 2 was introduced to the SVS for the first time. The revised indicators of accuracy for working standards of all levels are considered, conditions for the investigation of measuring instruments for assigning the status of a working standard, criteria for assessing metrological characteristics are given.

Sign in / Sign up

Export Citation Format

Share Document