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This paper presents a research for switched-capacitor (SC) bi-directional DC-AC converter for inductive and capacitive loads. The proposed converter keeps high efficiency even if the phase of the load is changed widely, since the output energy returns to the input. The validity of the proposed converter is confirmed by SPICE simulations. The SPICE simulations showed that (1) the output voltage is...
A switched-capacitor (SC) converter is in the spotlight as a coilless converter that consists of capacitors and switches. The SC converters have a weak point that the voltage ratio cannot change linearly, because the output voltage is determined by the voltage dividing ratios of the capacitors. In this paper, we propose SC DC-DC converter with fine tune control outputs. This circuit consists of 2...
A switched-capacitor (SC) converter is in the spotlight as a coil less converter that consists of the capacitors and switches. However, it was difficult to output the large-current because the timing which can charge capacitors is short at an AC input. In this paper, we propose a separate type SC converter with an AC input. "Separate type" means an electric separation of input and output...
The capillary network in the masseter muscle develops dramatically with the differentiation of muscle fibres after birth, especially around weaning. Here, developmental changes in mRNA expression for four splicing variants of vascular endothelial growth factor (VEGF) and for two distinct VEGF receptors (Fms-like tyrosine kinase (Flt-1) and kinase insert domain-containing receptor/fetal liver kinase-1...
Developmental changes in vascular endothelial growth factor (VEGF) in rat masseter after birth were investigated. VEGF was extracted efficiently and reproducibly from muscle homogenate with low concentrations of non-ionic detergents, such as Triton X-100, Nonidet P-40, and Tween 20. The amount of VEGF measured by enzyme-linked immunosorbent assay (ELISA) increased markedly by approximately 9-fold,...
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