Results 241 to 250 of about 34,772,816 (303)

Scientific overview of mandibular advancement devices: a bibliometric and altmetric analysis. [PDF]

Dental Press J Orthod
Cardoso K, Ramos I, Rocha AO, Mulinari J, Garcia JM, Santana CM, Cardoso M.   +6 more
europepmc   +1 more source

Social and Functional Risk Patterns and All-Cause Mortality Among US Adults with Chronic Liver Disease. [PDF]

Med Sci (Basel)
Ogbu CE, Kalu NJ, Orjiudeh HE, Okeke ND, Okafor M, Kollu L, Umerah C, Okafor PN.   +7 more
europepmc   +1 more source

Appreciation note: Biography Class to Ida M. Tarbell

, 2011
Allegheny College. Biography Class
core  

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Stacked Class-E Amplifier

IEEE Transactions on Industrial Electronics, 2020
In this article, a novel class-E amplifier topology, based on the functioning principle of the stacked converters, is presented. In this amplifier the available output electric power is determined by the addition of the electric power generated by each of the associated devices.
Rosendo Peña-Eguiluz, Allan Antonio Flores Fuentes, Antonio Mercado-Cabrera, Régulo López-Callejas, Benjamín G. Rodríguez-Méndez, Raúl Valencia-Alvarado, Bethsabet Jaramillo-Sierra, Alma N. Hernández-Arias   +7 more
openaire   +2 more sources

Class E frequency multiplier driving Class E amplifier

Proceedings of Power and Energy Systems in Converging Markets, 2002
In this paper, we propose the Class E frequency multiplier driving Class E amplifier. This circuit is composed of two series connected Class E amplifiers. One of these Class E amplifiers works like a driver circuit. The proposed circuit can reduce the total power dissipation of the driving stage and can work with higher efficiency.
T. Kawahara, T. Suetsugu
openaire   +1 more source

Class-E and inverse class-E switch-mode power amplifiers

Journal of Communications Technology and Electronics, 2012
Circuits of class-E and inverse class-E (Einv) switch-mode power amplifiers (PAs) are systemized on the basis of the principle of duality. New PA circuits (four class-Einv PA circuits and one class-E PA circuit) are proposed. The design relationships for values of reactive LC components of PA shaping circuits are given.
A. V. Vasil’ev, V. B. Kozyrev
openaire   +1 more source

Class E/sup 2/ DC/DC converter with second harmonic resonant class E inverter and Class E rectifier

Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94, 2002
Class E amplifiers have been used as inverters for highly efficient DC/AC energy conversion. ZVS-Class E inverters need an RF choke and ZCS-types have the turn-on switching loss increasing with operating frequency. Both types have nonzero power loss in the on-state resistance of the active switch. The second harmonic resonant Class E inverter has no RF
H. Koizumi, M. Iwadare, S. Mori
openaire   +1 more source

Injection-locked class-E oscillator

IEEE Transactions on Circuits and Systems I: Regular Papers, 2006
In this paper, approximate and exact analyses of the Class-E oscillator in the injection-locked mode are given. The synchronization band of the oscillation frequency is also studied. Various factors that influence the synchronization band of the injection-locked Class-E oscillator are described.
Marian K. Kazimierczuk, Vladimir G. Krizhanovski, Julia V. Rassokhina, Dmitrii V. Chernov   +3 more
openaire   +2 more sources