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1983 articles for “MQ-6 Gas Sensor” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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A New Multiband Square Patch Antenna with Sierpinski Gasket Slot and Fractal Koch Loop at Ground
Abstract: This paper presents a multiband square patch antenna with Sierpinski gasket slot on top surface of substrate and fractal Koch loop at ground. This antenna has been designed to operate at 0 to 3 GHz frequency range and operates at five different resonant frequencies. The Koch loop at ground surface provides irregularities in current distribution; this affects the radiation property of the antenna.
Published in Journal of Electronic Design Technology · Vol. 4, Issue 1, 2013 · pp. 5–10 Read article
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Effect of Partial Ground Plane on the Microstrip Patch Antenna Performance for Wireless Sensor Networks
Abstract: Wireless sensor networks have a number of tiny nodes. Each node has the ability to communicate with its neighbors. The communication range depends on the type of antenna used. This paper analyzes the performance of microstrip patch antenna which suppresses the surface waves from the edges of the ground-plane of the substrate. The microstrip patch antenna is designed using a substrate of dielectric constant εr = 2.2 and loss tangent …
Published in Journal of Electronic Design Technology · Vol. 4, Issue 3, 2013 · pp. 5–9 Read article
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Design of 6-Bit Two-step Flash ADC for High Speed and Low Power Applications
Abstract: In this paper, 6-bit two-step Flash ADC operated at the 2 GS/s is designed, with optimized performance for frequency domain applications. To get the best performance, the coarse convertor of 2-bit and the fine convertor of 4-bit are chosen. The comparator design is done with optimum power and area with two power supplies. Intermediate state accuracy increased by thermometer coded current steering DAC. The DNL and INL specifications are chosen …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 29–39 Read article
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Optimizing Fusion Zone Grain Size, Hardness and Tensile Strength of Micro Plasma Arc Welded Titanium (Ti-6Al-4V) Alloy Using Grey Relational Analysis
Abstract: In the present work, Titanium (Ti-6Al-4V) alloy sheet of 0.5 mm thick is butt welded using Micro Plasma Arc Welding. Welding input parameters like peak current, base current, pulse rate and pulse width are considered and output responses like fusion zone grain size, hardness and ultimate tensile strength of the welded joint are considered. Taguchi L25 orthogonal matrix is adopted by considering four factors and five levels of weld input …
Published in Journal of Mechatronics and Automation · Vol. 5, Issue 2, 2018 · pp. 21–33 Read article
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Fabrication and Performance Analysis of Automatic Dual-axis Sun Tracking System using LDR Sensors
Abstract: Solar energy is experiencing exponential growth as a viable technique of increasing renewable energy resources. Engineers need to be versed with the innovation used in this domain.Since the solar array can remain oriented to the sun, solar tracking enables considerably increased power generation. A dual-axis solar tracker can track the Sun's radiation on both horizontal andvertical axes at the same time. They work on the same concept as astronomical telescope …
Published in Journal of Mechatronics and Automation · Vol. 9, Issue 3, 2022 · pp. 37–48 Read article
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An Overview of Welding of Aluminium Alloys through Pulse – Gas Metal Arc Welding Process
Abstract: Newer aviation and automobile designs intend at minimizing weight. Motivated by this requirement light metal industry is experiencing some stimulating developments. One of the mainly used light metals is aluminium. As aluminium is exploited as a substitute material, many challenges have been emerged in front of manufacturers. Some of them are development of new aluminium alloys, joining of diverse types of aluminium alloys and enhancement in weld quality of welds …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 1, 2018 · pp. 17–24 Read article
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Investigation on pitting corrosion rate of Micro Plasma Arc Welded Titanium (Ti-6Al-4V) alloy sheets in KBr solution using TOPSIS
Abstract: Titanium is having good anti-corrosion properties in both basic and acidic medium. However, when it is subjected to severer heating processing like welding, there is a possibility of corrosion formation at the weld joint. In the present work Pulsed current MPAW is used for joining 0.5 mm thick Titanium (Ti-6Al-4V) alloy sheets. Peak Current, Base Current, Pulse Rate and Pulse Width are considered as input parameters and fusion zone corrosion …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 2, 2019 · pp. 37–53 Read article
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To explore the effect of polyethylene glycol additive on mechanical and gas permeation properties of polyvinyl alcohol membranes
Abstract: Polyvinyl alcohol (PVA) membranes were prepared by solution casting and blended with Polyethylene glycol (PEG) in de-ionized water which led to the formation of porous and flexible membranes. Extensive experimentation were performed, in order to find out that at what composition of PEG pores will be generated in the PVA membranes. The PVA polymer is a hard and crystalline thermoplastic so high concentrations of PEG were used, i.e. 40 wt%, …
Published in Journal of Polymer & Composites · Vol. 7, Issue 1, 2019 · pp. 27–33 Read article
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Effects of Supply Voltage on 6T CNT Based Schmitt Trigger
Abstract: In this growing and developing age of technology, we are needed to improve our methods in order to get better results. So taking this into account, in electronic field, we want circuits with low propagation delay, leakage current and leakage power. So, we compared the model of Schmitt trigger using C-MOS (Complementary mosfet) and CNT (carbon nanotube) technology. We performed the variation in power supply (varied from 0.1to 1.2 V) …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 2, 2018 · pp. 19–24 Read article
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Design a Patch Antenna with Metamaterial for Electromagnetic Interference Sensor
Abstract: This paper proposes a design of a patch antenna by using pentagonal shaped metamaterial for Electromagnetic interference sensor. Pentagonal shaped metamaterial is used to increase bandwidth of patch antenna. Metamaterial possesses properties such as negative permittivity and negative permeability. It reduces return loss of antenna and increases the directivity. Two identical rectangular patch antennas have designed for transmitting and receiving purpose. This proposed antenna has been simulated at 2GHz frequency …
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 1, 2013 · pp. 18–21 Read article
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The Energization Transients of 6-Pulse Rectifier Circuits
Abstract: This paper addresses the energization transients of 6-pulse rectifier circuits. It applies anefficient representation of the diodes in order to describe their performance in both theforward and reverse directions. Without any loss of generality, the suggested method isapplied to the classical un-controlled six-valve full-wave rectifier bridge configuration. Theeffect of the load resistance, the eventual presence of smoothing shunt-capacitors and seriesinductors as well as the waveform of the supply voltage is …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 1, 2020 · pp. 18–30 Read article
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Steady State and Transient Analysis of 6-Pulse Rectifier Bridges Including Faulty Diodes
Abstract: This paper addresses the steady-state and transient responses of un-controlled faulty 6-pulse diode rectifier bridge circuits. The faulty bridges can include several simultaneous diode valves’ open- or short-circuits. An efficient representation of the diodes is adopted in order to describe their performance in both the forward and reverse directions. A set of simultaneous differential and algebraic equations simulating the faulty rectifier bridge is presented. Its numerical solution is obtained through …
Published in Journal of Power Electronics and Power Systems · Vol. 10, Issue 3, 2020 · pp. 19–31 Read article
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Challenges and Prospects of the Use of Horizontal Directional Drilling Techniques for Laying Oil and Gas Pipelines in Nigeria
Abstract: Nigeria pipelines, especially the petroleum and petroleum product pipelines are always vandalized by the sabotage. Huge amount of money is expended to put the damaged pipeline in good shape; and petroleum and petroleum product transfer is sometimes hampered due to leakages and damages caused by the oil thieves. Also huge money is being budgeted yearly to secure the pipelines. To combat this problem, horizontal directional drilling (HDD) is being proposed. …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 9–20 Read article
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Study the Rheological and Filtration Properties of Oil-in-Water Emulsion for its Application in Oil and Gas Well Drilling
Abstract: This research article investigates the rheological and filtration properties of oil-in-water emulsion required for oil and gas well drilling. The rheological and filtration properties of the emulsions were enhanced by varying concentrations of xanthan gum and CaCO3. The concentration of diesel oil was varied in the range of 5–30% (v/v). The concentration of xanthan gum was varied in the range of 0.25–1% (w/v) and CaCO3 in the range of 1–4% …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 25–30 Read article
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To Optimize the Efficiency of Bottle Sleeving Machine by Reducing Systematic Errors
Abstract: Bottle sleeving machines are the machines use to label and sleeving the caps to the bottle. To gain the mass production and to improve the efficiency of this machine our team decided to change the parameters and proper alignment of few parts in machine. Previously, there were several errors include like systematic errors. Firstly, we change the sensors positioning to get successive operation of sleeves to the bottle. There were …
Published in Journal of Production Research & Management · Vol. 12, Issue 2, 2022 · pp. 23–29 Read article
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Reddish-orange Emission in Pr3+-V4+ Doped Ions in Calcium Lead Borosilicate Glasses for Photonics and Sensor Applications
Abstract: CaO-PbO-B2O3-SiO2:Pr2O3-V2O5 synthetic glasses were made using a traditional melt-quench method. In the UV-vis-NIR range, the optical absorption spectra show distinct transitions from different energy levels where simple Pr3+ ions are present. The absorption transition of V4+ ion identity exhibit 2T2g®2E2g (spin-allowed) single transition in the UV-vis region Because of the presence of the paramagnetic VO2+ ion, the EPR spectra showed high intensity hyperfine splitting of two sets of eight lines …
Published in Journal of Semiconductor Devices and Circuits · Vol. 10, Issue 3, 2024 · pp. 33–50 Read article
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Dissimilar Joining Of Aluminium Alloy to Copper Using Tungsten Inert Gas Welding Process
Abstract: Aluminium-copper dissimilar joints are applicable to electrical industry. 2 mm thick aluminium alloys (A1100) sheet is joined to 1 mm thick copper (Cu-DHP) sheet using tungsten inert gas welding (TIG) process. The effect of process parameters like heat input, torch orientation, arc weaving on mechanical properties of the joint are studied. In this combination the molten pool generated by melting of aluminium edge will wet the coppersurface to form a …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 5, Issue 2, 2018 · pp. 15–20 Read article
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Properties of Aluminium 6063 T6 by the Application of Friction Stir Processing
Abstract: With the advancement in technology and limited energy resources, now Manufacturing Industries are focusing more towards the material having better strength as compare to its weightand to reduce the material wastage industries are now demanding those processes which are highly efficient and can be easily performed. Friction stir processing have started a revolution in the field of material property modification. In this article we are discussing about an Investigation on …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 7, Issue 1, 2020 · pp. 24–38 Read article
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Navigating the Spectrum: A Review of Challenges and Opportunities in Wireless Network Densification for 6G Technology
Abstract: Each generation of wireless communication technology brings new and exciting features. However, the latest technology is not able to fully support the continuous increasing demand for wireless communication in 2030. To address the issues posed by the growing number of devices and the volume of voice and data communications traffic, a significant amount of research is needed. End-device (ED) and base station (BS) densification in Wireless (WND) will be impacted …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 3, 2023 · pp. 25–30 Read article
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Design of CMOS AM Modem for Wireless Sensors
Abstract: A design of amplitude modulated (AM) modem, compatible to CMOS technology for its monolithic integration with either wireless microsensors or other sources of baseband signals, is presented in this paper operating in different frequency bands. Circuits functional in different operating conditions are considered in the paper to satisfy the requirement from low- to high-speed signals produced either from the wireless sensor or other signal source to be modulated on a …
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 44–51 Read article