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Designing the feedback compensator for the SEPIC (single ended primary inductance converter) converter is quite difficult due to the extreme amount of phase shift in the power stage and occurrence of double resonance. Hence the current mode control, which increases the complexity of the system, is the most commonly adapted for stabilizing the converter. However, the careful observation of the frequency...
Background The purpose of the study is to assess the antiadherent and antibacterial properties of surface-modified stainless steel and NiTi orthodontic wires with silver against Lactobacillus acidophilus. Methods This study was done on 80 specimens of stainless steel and NiTi orthodontic wires. The specimens were divided into eight test groups. Each group consisted of 10 specimens. Groups containing...
As far as the complexity of the current mode control is concerned, illogical choosing of the phase cross over frequency for a converter doesn't bring any significant advantages over the voltage mode control. So, one has to select the bandwidth carefully so that benefits of the current mode control will trade off with the complexity of implementing the scheme. The reported work emphasizes on the importance...
There are numerous simulation tools for studying electrical and electronic circuit system dynamics. Most of the times, we stick to a specific software package for studying the behavior of a circuit- it depends either on acquaintance with the software or on accessibility. However, it is good to carefully evaluate the advantages and shortcomings of each package prior to selecting one for a given set...
This paper describes the application of TL494 PSPICE MODEL with OrCAD Capture for analyzing switching regulators, which can assist beginners like undergraduate students in understanding the switching regulators. This paper mainly focuses on application of simulation model as none of the literatures provides required information to work with TL494 simulation model. Although TL494 chip is a very simple...
In this paper, we present the significance of computer simulation program, such as ORCAD PSPICE, in analyzing, first order approximations of circuit behavior, a closed loop, non-isolated dc-dc converter with synchronous rectifier circuit. Following techniques have been adopted to simplify the process of simulation. They are: (1) Ideal switches are incorporated in the power stage of the converter to...
A common trunk of origin of the right testicular and middle suprarenal arteries with a retrocaval course was observed during the dissection of a male cadaver. The Common trunk (CT) arose from the anterior aspect of the abdominal aorta (AA) at the level of the right renal artery (RRA) and after a short course behind the inferior vena cava (IVC), the CT divided into right testicular and middle suprarenal...
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