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Artem Kozlov CREE XLamp LEDs in lighting systems - efficient, reliable, beautiful!
CREE Inc. is the world leader in the production of silicon carbide (SiC) semiconductor crystals and devices based on them. The production of XLamp ™ LEDs is one of the main activities of the company. It is a highly cost-effective alternative to traditional lighting methods, which provides an order of magnitude longer service life, excellent optical characteristics and high efficiency.
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Optoelectronics
Yuri Koval Clare OptoMOS advantages
A large number of electromechanical (electromagnetic) relays in various applications are now presented on the Ukrainian market, but is it always justified and optimal, especially when it comes to compactness, reliability, shock resistance, explosion safety, magnetic immunity and energy consumption?
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Optoelectronics
Victor Ovdiy, Valery Skryshevsky New bright and economical Acriche white AC LEDs for all kinds of lighting
South Korean company Seoul Semiconductor Co., Ltd. introduced to the high-power LED market the enhanced Acriche series (powered by 110/220 VAC), which is 50% bright and 40% more efficient than previous models in the series.
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Optoelectronics
Andrey Nikitin State-of-the-art LED backlight control ICs from National Semiconductor
In recent years, the range of integrated circuits produced by National Semiconductor has developed a line of devices that control LED backlighting. In addition to LED drivers that provide a stabilized current flowing through the LEDs, these microcircuits contain nodes that perform more "intelligent" functions: interfacing with a controlling microcontroller, generating a sequence of light effects, controlling the glow color of full-color RGB LEDs, and a number of others. The article discusses the National Semiconductor microcircuits intended for solving the tasks of decorative backlighting and backlighting of liquid crystal displays of mobile devices.
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Optoelectronics
Valery Romanov Edison Opto Corporation products
This article provides a brief overview of the main types of LED light sources available from Edison Opto Corporation.
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Optoelectronics
Suresh Hariharan Constant-swing PWM current driver for LED power supply
Superbright LEDs function optimally when powered by a current source rather than voltage. The article discusses the power supply circuit of a chain of LEDs with a current with a pulse width modulation (PWM) with a constant value of the pulse width. A string can contain from one to several LEDs.
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Optoelectronics
Lev Chemakin ON Semiconductor Components for Powering Ultrabright LEDs and LED Arrays
The features of creating lighting devices based on high-power LEDs based on ON Semiconductor components are considered. The circuits of converters of buck, boost and converter types are considered. The characteristics of several specific options for constructing a power supply device for lighting matrices are given.
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Optoelectronics
Yuri Knyshevsky Quad-crystal LEDs - maximum light controllable by the output LEDs
The article provides an overview of the ultra-bright output modern Chinese LEDs Exceed Perseverance Electronic Industry Co Ltd, as well as recommendations and examples of their widespread use.
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Information display
Evgeny Rakhno Simple user interface implementation
What is a user interface and what is it for?
The user interface serves for the convenience of human use of any device or system. The user interface can be conventionally divided into input and output devices. In this article, we will briefly look at both the former and the latter.
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Information display
Aramais Andreasyan Information technology for transport
The software and hardware complex for managing the display of data on public transport information boards is designed to improve the information of citizens about the movement of passenger public transport.
The first information board, providing citizens waiting for transport, real information about the time before its arrival, was installed in the fall of 2007 on Zhilyanskaya Street.
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Information display
Alexander Erkin, Pavel Kurkin Hitachi Graphic LCD Displays for Industrial Applications
Liquid crystal displays are currently the main display medium in information control computer systems. Having appeared in devices with room operating conditions, LCDs have come a long way of evolution and can now operate under very harsh conditions. The need for displaying graphic information in production has led to the development of the industrial LCD market. No development or modernization of computerized industrial equipment is complete without LCD displays, so developers always face the task of choosing LCD devices for their development. There are many LCD manufacturers offering devices of different cost, parameters and reliability, but not all of them produce devices suitable for harsh operating conditions. One of the few manufacturers of industrial LCDs is Hitachi, whose product overview we offer in this article.
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Information display
Alexander Leichenko, Evgeny Sheshin, Alexander Shchuka Information display devices with auto-electronic cathodes
Recently, cathode ray tubes (CRTs) are increasingly being pushed out of the market for displaying video information by liquid crystal (LCD) and plasma technologies in the sector of personal and community displays, LED technology in the sector of public video screens. Thermionic cathodes commonly used in CRTs make devices based on them bulky (large screen thickness); the need for heating the cathode reduces the efficiency of the devices. The image on the CRT screen is formed due to the excitation of the phosphor by high-energy electrons, and to obtain a color image for the entire screen, the electron flow is formed by three electron guns, which reduces the brightness and ergonomic characteristics of the display.
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Information display
Sergey Antonov POS Application Displays
Retail trade is one of the most rapidly developing industries in Russia. Its growth is accompanied by the formation of the market for electronic equipment for the automation of trade enterprises. One of the most important functions of POS equipment is the visualization of information for the consumer. Therefore, we decided to consider the requirements set by this task for information display devices and analyze possible solutions.
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Digital signal processing
Alexey Minchenko Digital Signal Processors from Texas Instruments for multimedia applications
This article provides an overview and description of the main functional blocks of two new digital signal processors from Texas Instruments - TMS320DM647 and TMS320DM648.
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Sensors
Roman Gorelkov Pyroelectric infrared sensors from Perkin Elmer Optoelectronics
Pyroelectric sensors are nowadays used in a wide range of applications such as motion, presence, gas detection and others. One of the world's manufacturers of such sensors is Perkin Elmer Optoelectronics. The article provides an overview and technical parameters of the products of this company.
The features of construction and characteristics of microcircuit sets (chipsets) used for the construction of navigation devices for mass use are considered. The most popular on the Russian market portable devices for navigation in the GPS standard are described. A comparison of the main programs used in portable navigators is given.
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FPGA and BMK
Valery Zotov Practical course of end-to-end design of digital devices based on FPGAs from Xilinx. Part 13
The thirteenth part of the course introduces the content of the implementation stage of the designed devices in FPGA crystals of the CPLD families. Provides the necessary information about the purpose and possible values of the parameters of the placement and routing process, performed using CAD tools of the Xilinx ISE series. The stage of implementation of the developed device in crystals with the CPLD architecture is considered. A brief description of the structure of reports on the execution of the placement and tracing stage and the results of static temporal analysis is provided.
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Microprocessors
Sergey Orlov New programmable audio processor with built-in scrambler
The British company CML has traditionally been a leader in the design and manufacture of low-current specialized processors for analog and digital wireless communications. Audio processor ICs for professional and semi-professional radio communication are very popular: CMX882, CMX838, CMX7031, CMX7041. The semi-professional equipment uses simple and reliable microcircuits CMX808, FX465. However, in connection with the transition to new technological processes, it becomes necessary to gradually replace them with similar ones,
still uncomplicated, but cheaper. Reducing the price becomes possible due to the transition to topological norms of 0.15 microns and the use of 200 mm silicon wafers. The new CMX138 processor should eventually replace the existing CMX808 and FX465.
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Engineering practice
Jamie Allan, John Russell Testing mobile phones with UMA/GAN support
The features of the functioning of mobile phones that can operate both in the cellular network and in the wireless Internet are considered. These phones provide owners with all the benefits of broadband Internet access. During operation, the phone must ensure reliable switching of the network type. The features of equipment testing during transitions between networks and possible changes in the characteristics of communication channels in non-standard situations are described.
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Exhibitions
EXHIBITIONS
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