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International Journal of Engineering Research and Applications (IJERA)
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Conventional boost converters are unable to provide high step-up voltage gains due to the effect ... more Conventional boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes, and the equivalent series resistance of inductors and capacitors. This paper proposes high voltage gain transformer less Boost Converter without an extremely high duty ratio. Some dc-dc converters can provide high step-up voltage gain, but with the penalty of either an extreme duty ratio or a large amount of circulating energy. In the proposed converters, two inductors with the same level of inductance are charged in parallel during the switch-on period and are discharged in series during the switch-off period. The structures of the proposed converters are very simple. Only one power stage is used. Highefficiency, high step-up dc-dc converters with simple topologies are proposed in this paper.
International Journal of Current Microbiology and Applied Sciences, Oct 10, 2018
Otitis media is an inflammation of the middle ear & mastoid process, which could be acute purulen... more Otitis media is an inflammation of the middle ear & mastoid process, which could be acute purulent otitis media, otitis media with effusion and chronic suppurative otitis media (CSOM) (Berman, 1997). CSOM is a condition of non-healing perforation of the tympanic membrane associated with chronic inflammatory changes of the Mucoperiosteum of the middle ear cleft resulting in mucoid or mucopurulent otorrhea of more than three months duration (Nwabuisi and Ologe, 2002; Sharma et al., 2004). CSOM is a major problem in developing countries like India. It is more common in children
Conventional boost converters are unable to provide high step-up voltage gains due to the effect ... more Conventional boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes, and the equivalent series resistance of inductors and capacitors. This paper proposes high voltage gain transformer less Boost Converter without an extremely high duty ratio. Some dc-dc converters can provide high step-up voltage gain, but with the penalty of either an extreme duty ratio or a large amount of circulating energy. In the proposed converters, two inductors with the same level of inductance are charged in parallel during the switch-on period and are discharged in series during the switch-off period. The structures of the proposed converters are very simple. Only one power stage is used. Highefficiency, high step-up dc-dc converters with simple topologies are proposed in this paper.
International Journal of Current Microbiology and Applied Sciences, Oct 10, 2018
Otitis media is an inflammation of the middle ear & mastoid process, which could be acute purulen... more Otitis media is an inflammation of the middle ear & mastoid process, which could be acute purulent otitis media, otitis media with effusion and chronic suppurative otitis media (CSOM) (Berman, 1997). CSOM is a condition of non-healing perforation of the tympanic membrane associated with chronic inflammatory changes of the Mucoperiosteum of the middle ear cleft resulting in mucoid or mucopurulent otorrhea of more than three months duration (Nwabuisi and Ologe, 2002; Sharma et al., 2004). CSOM is a major problem in developing countries like India. It is more common in children