Síntesis sencilla de óxido de tungsteno(VI) a partir del filamento de un foco

<span>Tungsten(VI) oxide can be easily synthesized starting from a standard light bulb. The reaction consists in the oxidation at high temperatures (T ≈ 2000 3000° C) of a tungsten filament in presence of air; conditions which can be easily achieved by connecting a broken light bulb (but with its intact filament) to an AC-power supply of 110 volts. The vapor of WO3 is condensed into a beaker in a quantity enough to be characterized by infrared spectroscopy. The experiment is very funny, inexpensive and allows to the teacher to link several topics in current chemistry and physics of the tungsten oxides, such as their nomenclature and technological applications (i.e. electrochromic devices, gasochromic sensors, superalloys or as it is used in home: As a simple emisor of light!).</span>

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AC Power Supply Noise Simulation of CMOS Microprocessor with LSI Chip-Package-Board Integrated Model

IEICE Transactions on Electronics ◽

10.1587/transele.e97.c.264 ◽

2014 ◽

Vol E97.C (4) ◽

pp. 264-271 ◽

Cited By ~ 1

Author(s):

Kumpei YOSHIKAWA ◽

Kouji ICHIKAWA ◽

Makoto NAGATA

Keyword(s):

Power Supply ◽

Integrated Model ◽

Power Supply Noise ◽

Supply Noise ◽

Noise Simulation ◽

Ac Power

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Nuclear power plants - Instrumentation, control and electrical power systems - Requirements for static uninterruptible DC and AC power supply systems

10.3403/30395311 ◽

2020 ◽

Keyword(s):

Power Systems ◽

Power Supply ◽

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

Electrical Power ◽

Electrical Power Systems ◽

Ac Power ◽

Systems Requirements ◽

Supply Systems

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Strong coloration of nanoporous tungsten oxides by in-vacuo lithiation for all-solid-state electrochromic devices

Thin Solid Films ◽

10.1016/j.tsf.2021.138700 ◽

2021 ◽

pp. 138700

Author(s):

Olivia Bouvard ◽

Maxime Lagier ◽

Luc Burnier ◽

Anna Krammer ◽

Andreas Schüler

Keyword(s):

Solid State ◽

Electrochromic Devices ◽

Tungsten Oxides

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Portable Photovoltaic-Self-Powered Flexible Electrochromic Windows for Adaptive Envelopes

Electronic Materials ◽

10.3390/electronicmat2020014 ◽

2021 ◽

Vol 2 (2) ◽

pp. 174-185

Author(s):

Antonio Cánovas-Saura ◽

Ramón Ruiz ◽

Rodolfo López-Vicente ◽

José Abad ◽

Antonio Urbina ◽

...

Keyword(s):

Power Supply ◽

Organic Solar Cells ◽

Market Integration ◽

Control Method ◽

Light Transmission ◽

Transmission Function ◽

Electronic Control ◽

Electrochromic Devices ◽

Large Area ◽

Self Powered

Variable transmission applications for light control or energy saving based on electrochromic materials have been successfully applied in the past in the building, sports, or automotive fields, although lower costs and ease of fabrication, installation, and maintenance are still needed for deeper market integration. In this study, all-printed large area (900 cm2 active area) flexible electrochromic devices were fabricated, and an autoregulating self-power supply was implemented through the use of organic solar cells. A new perspective was applied for automotive light transmission function, where portability and mechanical flexibility added new features for successful market implementation. Special emphasis was placed in applying solution-based scalable deposition techniques and commercially available materials (PEDOT-PSS as an electrochromic material; vanadium oxide, V2O5, as a transparent ion-storage counter electrode; and organic solar modules as the power supply). A straightforward electronic control method was designed and successfully implemented allowing for easy user control. We describe a step-by-step route following the design, materials optimization, electronic control simulation, in-solution fabrication, and scaling-up of fully functional self-powered portable electrochromic devices.

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