On the Relationship Between the Temperature Coefficient and the Relative Volatility for the Process of Rectification

2019 ◽  
Vol 92 (6) ◽  
pp. 1385-1395
Author(s):  
A. M. Tsirlin ◽  
I. A. Sukin
Keyword(s):  
Temperature Coefficient ◽  
Relative Volatility ◽  
The Relationship

A Study on Temperature Properties of Different Types of Fixed Resistor

2017 ◽  
Vol 866 ◽  
pp. 392-397
Author(s):  
Nattapong Phanthuna ◽  
Chaiwat Jassadajin
Keyword(s):  
Low Power ◽  
Temperature Coefficient ◽  
Temperature Variation ◽  
Carbon Film ◽  
Experimental Result ◽  
Experimental Setup ◽  
Different Types ◽  
Wound Type ◽  
The Relationship ◽  
Resistance Value

This paper studies the relationship between the value of temperature variation and the resistance value of each type of general resistors as well as also determines the temperature coefficient value of each resistor type. All obtained results will be compared to build a guideline for selecting the resistor to apply in any applications accurately and properly. Each type of 1 k-ohm resistor that has different power is used to study its properties and is controlled its temperature variation to be in range of 20 to 30 degree Celsius. An experimental setup to control the temperature variation of the resistors in this paper is that the resistors are put into an oil bath controlled its temperature after that measuring the changed resistance value of the resistors following oil temperature in the bath. The experimental result demonstrates that the temperature variation affects to change the resistance value of Carbon Film type the most but affects to change the resistance value of Wire Wound type with low power the least.

scholarly journals Relationship between tolerance factor and temperature coefficient of permittivity of temperature-stable high permittivity BaTiO3–Bi(Me)O3 compounds

2016 ◽  
Vol 06 (01) ◽  
pp. 1650002 ◽  
Author(s):  
Natthaphon Raengthon ◽  
Connor McCue ◽  
David P. Cann
Keyword(s):  
Temperature Coefficient ◽  
Solid Solutions ◽  
Temperature Stability ◽  
Past Research ◽  
Tolerance Factor ◽  
Microwave Dielectrics ◽  
High Permittivity ◽  
The Relationship

The temperature coefficient of permittivity ([Formula: see text]) of BaTiO3–Bi(Me)O3 solid solutions were investigated. It was determined that as the tolerance factor was decreased with the addition of Bi(Me)O3, the [Formula: see text] shifted from large negative values to [Formula: see text] values approaching zero. It is proposed that the different bonding nature of the dopant cation affects the magnitude and temperature stability of the permittivity. This study suggests that the relationship between tolerance factor and [Formula: see text] can be used as a guide to design new dielectric compounds exhibiting temperature-stable high permittivity characteristics, which is similar to past research on perovskite and pyrochlore-based microwave dielectrics.

Amplifier Bias Stability Design on Output Range Temp. Coefficient

2012 ◽  
Vol 433-440 ◽  
pp. 7368-7374
Author(s):  
Zeng Min Yuan ◽  
Xu Jin Yuan
Keyword(s):  
Temperature Coefficient ◽  
Voltage Divider ◽  
Design Methods ◽  
Bias Stability ◽  
The Relationship

The limitations of empiric design methods for amplifier biasing stability were pointed out. Critical bias and output range of voltage divider biasing amplifier were discussed. The relationship between bias temperature coefficient and β temperature coefficient was discussed as well. The ratio of bias temperature coefficient to β temperature coefficient is defined as effecting factor. Amplifier bias stability is designed based on output range temperature coefficient. The methods for designing base biasing resistance of voltage divider biasing amplifier on the basis of output range temperature coefficient and for analyzing biasing stability of this amplifier are introduced.

scholarly journals МЕЖПРЕДМЕТНАЯ СВЯЗЬ – КАК ПУТЬ ПОВЫШЕНИЕ ЭФФЕКТИВНОСТИ ОБУЧЕНИЯ В ПРОЦЕССЕ ПРЕПОДАВАНИЯ КУРСОВ „ОБЩЕЙ ФИЗИКИ И МАТЕМАТИКИ“ В БГМА С ПРИМЕНЕНИЕМ КОМПЬЮТЕРНЫХ ТЕХНОЛОГИЙ

2020 ◽  
pp. 33-37
Author(s):  
Диасамидзе Мзия Ресановна ◽  
Телия Тамаз Николаевич ◽  
Моцкобили Ия Ревазовна
Keyword(s):  
Temperature Coefficient ◽  
Teaching Method ◽  
Essential Feature ◽  
Engineering Problem ◽  
Measuring Instruments ◽  
University Graduates ◽  
Linear Temperature ◽  
Relationship Of ◽  
The Relationship ◽  
General Technical

The article analyzes the influence of the relationship of basic subjects with general technical subjects in the learning process for students of marine specialties. It is possible to realize this connection by developing and implementing engineering problems that a student at the BSMA will have to face both in primary courses and in the study of special subjects. Our early research results indicate the effectiveness of the use of such a teaching method as a means of developing students' thinking. Our institution is a specific technical university. Graduates have to work in extremely dangerous situations at sea, and they have to decide the fate of passengers, ship and cargo in a matter of minutes. Therefore, special thinking is an essential feature of a sailor. While studying, along with other subjects, students study various marine equipment, conduct observations of measuring instruments (for example, temperature in the engine room, in turbine pumps, etc.). The article considers the engineering problem - determining the value of the linear temperature coefficient of a thermistor in Excel. Based on the basic data, a graph of the dependence of temperature on resistance is constructed, a linear temperature coefficient and the reliability of the approximation value are determined. It is established whether the device used is laboratory. The corresponding conclusions are made.

The correlation between τɛ and the tolerance factor in (Sr, Ca) (Ti, Zr)O3 microwave dielectric ceramics

1998 ◽  
Vol 13 (5) ◽  
pp. 1107-1109 ◽  
Author(s):  
Chae-Il Cheon ◽  
Jeong-Seog Kim ◽  
Hyeung-Gyu Lee
Keyword(s):  
Solid Solution ◽  
Dielectric Constant ◽  
Temperature Coefficient ◽  
Composition Range ◽  
Microwave Dielectric Properties ◽  
Tolerance Factor ◽  
Microwave Dielectric Ceramics ◽  
Microwave Dielectric ◽  
Dielectric Ceramics ◽  
The Relationship

Microwave dielectric properties and the relationship between the temperature coefficient of the dielectric constant (τ ɛ) and the tolerance factor were investigated in (Sr0.2Ca0.8) (Ti1–xZrx)O3 ceramics. The τɛ increased linearly as the tolerance factor decreased from 0.984 to 0.929 in the whole composition range of the (Sr0.2Ca0.8) (Ti1–xZrx)O3 solid solution. At the composition of (Sr0.2Ca0.8) (Ti0.04Zr0.96)O3, the dielectric constant was 34 and Q · f was 10,938 GHz and the temperature coefficient of the resonance frequency (τɛ) was supposed to be near zero.

scholarly journals Studies in the dynamics of disinfection. V. The temperature coefficient of the reaction between phenol and Bact. coli, derived from data obtained by an improved technique

1946 ◽  
Vol 44 (4) ◽  
pp. 243-248 ◽  
Author(s):  
R. C. Jordan ◽  
S. E. Jacobs
Keyword(s):  
Temperature Coefficient ◽  
General Type ◽  
The Other ◽  
Published Data ◽  
Temperature Coefficients ◽  
Limited Applicability ◽  
High Concentrations ◽  
Improved Technique ◽  
The Relationship ◽  
The Way

1. The virtual sterilization time (v.s.t.) has been used as a measure of the rate of disinfection of Bact. coli cultures by phenol under carefully standardized conditions, and the relationship between this rate and temperature at five phenol concentrations has been examined.2. The graphs of log (v.s.t.) against temperature reveal that the formula t×θT = A, as usually employed for the calculation of the temperature coefficient of the rate of disinfection, has only a limited applicability for these data. θ and Q10 increased with temperature especially at high concentrations, and at the lowest concentration there was a tendency for them to increase again as the temperature was reduced below a certain point.3. The other general type of formula, t(T –α)b = a, used for the calculation of biological temperature coefficients, is also of very limited value when applied to these data since b increases with temperature at all concentrations.4. The magnitude of these temperature coefficients and their manner of variation are considered in relation to previously published data by other authors and the way in which θ should theoretically vary with temperature is discussed.

scholarly journals Studies in the dynamics of disinfection. VI. Calculation of a new and constant temperature coefficient for the reaction between phenol and Bact. coli

1946 ◽  
Vol 44 (4) ◽  
pp. 249-255 ◽  
Author(s):  
R. C. Jordan ◽  
S. E. Jacobs
Keyword(s):  
Temperature Coefficient ◽  
Constant Temperature ◽  
Point Of View ◽  
Phenol Concentration ◽  
Maximum Temperature ◽  
Threshold Temperature ◽  
Temperature Coefficients ◽  
Maximum Temperatures ◽  
Relationship Of ◽  
The Relationship

1. The virtual sterilization time (v.s.t.) has been used as a measure of the rate of disinfection of Bact. coli cultures by phenol under carefully standardized conditions. The relationship of this time to temperature at each of five phenol concentrations has been examined from a fresh point of view, since it has previously been shown (Jordan & Jacobs, 1946) that none of the commonly accepted temperature coefficients was satisfactorily constant.2. The relationship is such that a minimum or threshold temperature exists for each concentration. A corresponding ‘maximum’ temperature has been fixed, defined as the temperature at which the v.s.t. is 10 min. The value of (v.s.t. – 10) thus varies from infinity to zero between these temperature limits.3. Sigmoid curves are obtained when log (v.s.t. –10) is plotted against temperature for given phenol concentrations. These may be regarded as asymptotic to ordinates at the minimum and maximum temperatures.4. The Pearl-Verhulst logistic equation gives a curve of the required sigmoid type, and this formula has been shown to fit the curves of log (v.s.t. – 10) against temperature very satisfactorily over the range of concentrations studied.5. One of the constants of this formula partakes of the nature of a temperature coefficient, and it has, therefore, been possible to derive a truly constant temperature coefficient for each phenol concentration.6. The values of this new temperature coefficient do not vary greatly with phenol concentration within the range studied, but it is not yet possible to establish whether it is essentially constant for all phenol concentrations with which it is possible to work.

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