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Common methods of displacement measurement include image analysis, dual-frequency laser measurement, grating or magnetic grating measurement, magnetoresistance or magnetic field measurement, etc. ...[Details]
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1.1 PFC Topology Overview
Resonant power supplies are often used in high-power systems. For high-power applications, it is generally necessary to reduce power supply harmonics. Active power factor ...[Details]
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Room lighting is inseparable from lamps, which are the concentrated reflection of lighting. They are not only tools to complete the functions of room buildings and create visual conditions, but a...[Details]
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Nowadays, most industrial servo drives use AC servo systems that drive permanent magnet synchronous motors (PMSMs), and their AC drive units use three-phase full-bridge voltage-type inverters. PWM-mo...[Details]
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introduce Compared with ordinary light sources, LED lamps are becoming the preferred solution for reducing energy consumption in indoor and outdoor lighting due to their high efficiency, environmenta...[Details]
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Carbon nanotubes
covered with phospholipid disks can
make
solar cells
self-repairing, just like photosynthesis in plants. This
photoelectrochemical
solar
cell was deve...[Details]
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Output ripple noise plays an important role in designing power supply circuits, but how much is appropriate? If the requirements are relaxed, the ripple noise is too large, the circuit cannot work pr...[Details]
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The key issue of LED street light decay lies in temperature, but LED street lights usually fail in this link. Since the luminous power of LED street lights is greater than that of household lamps,...[Details]
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Circuit principle: The integrated circuit charger, as shown in the figure, is a constant current charging circuit composed of a three-terminal voltage regulator (LM317). Since the potential differ...[Details]
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1 Introduction
At present, 90% of passengers carry mobile personal electronic devices, and now aircraft have begun to install seat power supply equipment to meet the power needs of passengers...[Details]
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Consumer LED applications are very popular, and now LEDs can be found in home lighting, aircraft cabin lights, automotive lights, MP3 players, and other applications. In the past, most LED drivers w...[Details]
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With the development of social productivity and the increasing prosperity of the market economy, especially after my country joined the World Trade Organization, my country's electroplating industr...[Details]
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In
the field of
LED lighting
, in order to reflect
the energy-saving and long life characteristics of
LED lamps
, it is crucial to correctly select
LED driver
...[Details]
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The selection of high-power LED
lamp beads and
LED
point light sources should be analyzed from the following 9 aspects:
1. LED
brightness
The price of ...[Details]
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In the battle for market share, handset vendors are under constant pressure to innovate and continue to offer 3G mobile handsets with more features than ever before. On the other hand, while enjoyi...[Details]
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