Volume 13 Number 3 August 2022

    
Tools for Designing Double Squirrel Cage Rooters

Blagoja Arapinoski, Mirka P. Radevska, Metodija Atanasovski and Mile Spirovski

https://doi.org/10.6025/jitr/2022/13/3/57-62

Abstract We in this work published the research on three-phase asynchronous motors which have inbuilt double squirrel cage rooter. Initially, we have developed tools that can help to design and analyse the electrical machines. This is possible by fixing the operation characteristics with ease. We have also presented equations relating to the operating characteristics for which we have used the tools.... Read More


Measuring the Efficiency of Gallium Transistors for Buck Converters

Zoran Zivanovic and Vladimir Smiljakovic

https://doi.org/10.6025/jitr/2022/13/3/63-72

Abstract This paper reports the use of Gallium transistors for creating models of buck converters. With the help of the functional block diagrams, we have described the operating principles. To confirm and ensure the functioning of the created model we have developed pilot system that is experimented with various calculations. Our purpose is to prove the ability of the transistors to... Read More


Deploying QoS Parameters and their Integration in VoIP Services

Dragan Martovi, Zoran Velikovi, Zoran Milivojevi, Marko Velikovi

https://doi.org/10.6025/jitr/2022/13/3/73-79

Abstract We have performed VoIP services with analog based phones. We have integrated the grand stream with analog phones. We have recorded the QoS parameters of the conversational speech with switches. We found that the QoS parameter, the packet delay is permitted limits during the conversational speech. Besides, we have observed the packet loss within limit while measuring the average value... Read More