Common Mode Currents
Mostrando 1-4 de 4 artigos, teses e dissertações.
-
1. Determinação das capacitâncias fuga em motores de indução através do método de elementos finitos / Leakage capacitances determination in induction motors through finite elements method
Objetivo: elaborar uma metodologia, baseada na técnica de elementos finitos, para estimar as capacitâncias de fuga em motores de indução e aplicar em estudos de modo comum. Material e Método: Foi utilizado o programa FEMM (Finite Element Method Magnetics) para fazer a computação das capacitâncias de fuga a partir de sua representação geométrica. P
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/08/2011
-
2. Projeto de filtros para atenuação de correntes de modo comum e de sobretensões em acionamentos de motores elétricos utilizando inversores PWM
The use of inverters in most of electrical motor drives applications has been accompanie by several undesirable effects, such as overvoltage at the motor terminals, circulation of common mode currents and electromagnetic interference problems. The determining factors for most of these problems come with the high switching speed and frequency of the semicondu
Publicado em: 2010
-
3. Fluctuations of inhibitory postsynaptic currents in Purkinje cells from rat cerebellar slices.
1. Paired patch-clamp recordings were performed in cerebellar slices to study IPSCs evoked by interneurones (stellate and basket cells) in Purkinje cells. 2. IPSCs were first examined while keeping the presynaptic cell in the cell-attached mode. In some of these experiments IPSCs had a remarkably broad amplitude distribution. Large variabilities were associa
-
4. Membrane properties of the granule cells of the islands of Calleja of the rat studied in vitro.
1. Using patch-clamp techniques, we have studied granule neurones from the islands of Calleja in vitro: as isolated cells or as groups of varying numbers following enzymic digestion, or within untreated slices of approximately 100 microns thickness. 2. Recordings were made with patch pipettes in conventional or nystatin-perforated whole-cell mode. Current-cl