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Articles 91 - 101 of 101
Full-Text Articles in Electrical and Electronics
Electrical Equivalent Method For The Calculation Of Vibrations In Transformers, D Chambega
Electrical Equivalent Method For The Calculation Of Vibrations In Transformers, D Chambega
Tanzania Journal of Engineering and Technology (TJET)
Noiselevel calculations may be done using an electrical equivalent method. So far a single mass and a double mass vibrating system may easily be represented by equivalent electrical circuits which are in turn useful for analysis. Multimass vibrating systems like transformers do not have straightforward methods which can enable analysis of noiselevels. This paper attempts to develop such a method by extending the method applicable to a double mass vibrating system. Then the validity of the method is tested using a transforme
Computation Of Frequency Characteristics Of Lumped-Element 3 Db Branch Line Directional Couplers, H. R. Mgombelo
Computation Of Frequency Characteristics Of Lumped-Element 3 Db Branch Line Directional Couplers, H. R. Mgombelo
Tanzania Journal of Engineering and Technology (TJET)
An analysis of the 3 dB lumped-element branchline directional coupler constructed using L-C and T networks is given. Matrices of lumped element capacitances and inductances in the form of low and high pass filters are equated to the matrices of the distributed element transmission lines at the centre frequency of operation, as a result of which design equations are derived. Using even and odd modes of excitation, frequency characteristics of the directional couplers are computed and compared to those of the coupler constructed using distributed element transmission lines.
The Design Of A Resonant Post Waveguide Filter, Ramjee Prasad
The Design Of A Resonant Post Waveguide Filter, Ramjee Prasad
Tanzania Journal of Engineering and Technology (TJET)
A seven stage, quarter-wave coupled, single post, resonant cavity type waveguide filter has been studied. The posts are placed according to the Tchebyscheff distribution. The filter is designed and fabricated to meet the following specifications: Centre frequency: 9.31 GHz, Number of stages = 7, 3-dB bandwidth = 300 Mhz, Ripple tolerance in the passband = 0.5 dB. The frequency behaviour of this filter has been experimentally studied and is in close agreement with the specifications.
Gain Margin And Phase Margin Interrelationships, M Luhanga
Gain Margin And Phase Margin Interrelationships, M Luhanga
Tanzania Journal of Engineering and Technology (TJET)
The gain margin and the phase margin Of a control SY Stem are important parameters in the determination of the relative stability of control system. In this paper We derive general interrelationships between these parameters.
An Electro Hydrodynamic Study Of The Negative Corona Electric Wind, Henry Thadei Kadete
An Electro Hydrodynamic Study Of The Negative Corona Electric Wind, Henry Thadei Kadete
Tanzania Journal of Engineering and Technology (TJET)
The velocity of corona generated electric wind is measured. From the velocity profile mass movement and electrokinetic conversion efficiencies are deduced. High speed schlieren photographs illustrate the form of the velocity distribution function as well as its high degree of turbulence.
Simple Graphic Routines Ease Drawing Of Artwork For The Fabrication Of Microstrip Lines, H Mgombelo
Simple Graphic Routines Ease Drawing Of Artwork For The Fabrication Of Microstrip Lines, H Mgombelo
Tanzania Journal of Engineering and Technology (TJET)
A method which uses simple graphic routines available to general computer users for drawing diagrams intended to be reproduced on printed circuit boards (PCB's) is presented. Experimental verifications for the created microchip lines are reported.
Negative Corona Current Characteristics Of An Electric Wind System, Aviti Kadete
Negative Corona Current Characteristics Of An Electric Wind System, Aviti Kadete
Tanzania Journal of Engineering and Technology (TJET)
The corona current characteristics of an electric wind system are investigated. First a brief summary of the negative point to plate corona mechanism and characteristics are presented. Then empirical equations for corona currents of an electric wind system are derived. Current waveform characteristics are also discussed. The effects of placing parallel rods in between a point-plate electrode gap to the corona currents are highlighted.
The Psychic Responsibility Of Engineering, M Megji
The Psychic Responsibility Of Engineering, M Megji
Tanzania Journal of Engineering and Technology (TJET)
During the assessment of the manuscript, it was observed that the paper does not include an abstract. The document proceeds directry to the main content without providing a separate abstract that summarize the study's objectives, methodology, key findings and conclusions
Some Facts And Prospects For The Establishment Of Television Broadcasts In Mainland Tanzania, H. R. Mgombelo
Some Facts And Prospects For The Establishment Of Television Broadcasts In Mainland Tanzania, H. R. Mgombelo
Tanzania Journal of Engineering and Technology (TJET)
Abstract
Books To Make Electronics Easy, P Mynott
Books To Make Electronics Easy, P Mynott
Tanzania Journal of Engineering and Technology (TJET)
During the assessment of the manuscript, it was observed that the paper does not include an abstract. The document proceeds directry to the main content without providing a separate abstract that summarize the study's objectives, methodology, key findings and conclusions
Tanesco's Protection Department, A Fernandes
Tanesco's Protection Department, A Fernandes
Tanzania Journal of Engineering and Technology (TJET)
During the assessment of the manuscript, it was observed that the paper does not include an abstract. The document proceeds directry to the main content without providing a separate abstract that summarize the study's objectives, methodology, key findings and conclusions