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Create 16x16 LED Displays with Flexible Reference Design

Hobbyists and makers now have more flexibility and options when developing LED signs, using the MAXREFDE99# 16x16 display reference design from Maxim.

LEDs continue to dramatically transform signage and lighting. However, often LED displays today are 8x8 and cannot communicate many international alpha-numeric characters. MAXREFDES99# integrates four MAX7219 LED drivers to provide designers a 16x16 display with 256 LEDs, allowing them to create signs in multiple languages. The MAX7219 driver simplifies the process of controlling multiple LEDs in matrix or numeric display form. For fast prototyping, software code developed for the MAXREFDES99# reference design works with both ARM mbed and Arduino platforms. Developers are encouraged to build upon and enhance the code base for more signage possibilities.

Lumileds Expands And Improves Its Award Winning LUXEON C Color Line

The LED industry’s broadest portfolio of color emitters now includes mint, deep red and far red offerings as well as up to a 12% performance upgrade.

Lumileds, the global leader in light engine technology, today expanded its line of LUXEON C Color LEDs to a total of 12 colors (and 8 whites), making it the industry’s broadest line of color LEDs available. The LUXEON C Color Line is an optically advanced portfolio of LEDs that enables flawless color mixing because the focal length of each LED is identical, enabling maximum optical efficiency in design. “Lumileds has filled out the spectrum on an LED color line that really sets the standard in color mixing. We’re delivering  seamless color mixing and the right colors for every application, including studio and stage lighting, architectural lighting, emergency vehicle lighting as well as color tunable lamps/fixtures,” said Jennifer Holland, Product Manager for the LUXEON C Color Line.

Wireless Standards Governing Internet of Things (IoT) Connectivity

Internet of Things (IoT) is an evolving field of computer, software, and hardware engineering that aims to bring interconnectivity to devices and human beings.  Since it is not a new field, several wireless standards, or protocols, of connectivity, have been developed since the beginning of IoT.  Different groups and standards try to solve various problems.  Depending on the application, which will dictate various factors such as range, data requirements, security, power demands, and battery life will determine the choice of one or a combination of technologies.  Outlined below are some of the major wireless standards that electrical engineers can use in Internet of Things electronic design.

Super Barrier Rectifier from Diodes Incorporated Optimized for Solid-State Retrofit MR16 LED Lamps

Diodes Incorporated (Nasdaq: DIOD), a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic, analog and mixed-signal semiconductor markets, today introduced the SBRT3M40P1. This Trench Super Barrier Rectifier (SBR®) has been optimized to deliver a low forward-voltage drop in a small form factor while maintaining low reverse-current leakage. This capability addresses requirements for input bridge rectifiers in solid-state lighting (SSL) applications focused on 12V AC LED retrofit lamps, which provide a more efficient and longer life alternative to popular MR16 halogen bulbs.

Cree Expands Portfolio of LEDs for Horticulture Lighting

New XQ-E Photo Red LED Enables More Efficient, Lower Cost SystemsNew XQ-E Photo Red LED Enables More Efficient, Lower Cost Systems

Cree, Inc. (Nasdaq: CREE) expands its industry-leading portfolio of LEDs optimized for horticulture lighting with the introduction of the new Cree XLamp® XQ-E Photo Red LED.  The XQ-E Photo Red LED is capable of providing very high levels of growth-promoting light wavelengths from a footprint that is less than one-third the size of its closest competitor with similar output.  The new XQ-E LED extends the family of smallest LEDs optimized for horticulture and enables lighting manufacturers to reduce the size of luminaires and lower their system cost. 

LYTSwitch-1 LED Driver ICs From Power Integrations Reduce Complexity in Bulbs, Tubes and Ballasts up to 22 W

High PF, low THD LED driver ICs set a new standard in efficiency

SAN JOSE, Calif.--(BUSINESS WIRE)-- Power Integrations (Nasdaq: POWI), the leader in high-efficiency, high-reliability LED driver ICs, today announced its LYTSwitch™-1 single-stage, non-isolated, buck topology LED driver IC family. Featuring a very compact footprint, the IC enables the design of LED bulbs and tubes with high constant-current accuracy while using a minimum number of components. A novel driver algorithm ensures high power factor (PF) and low total harmonic distortion (THD) while maintaining very high efficiency.

Shine or illuminate? Developing what the market needs

From smart bulbs in private households to efficient greenhouse lighting to attractively staged architecture, depending on the application soft or signal colours might be needed. The light might need to simply shine, or illuminate something else. So OSRAM Opto Semiconductors has added a new method to its colour LED manufacturing capabilities. Normally, the semiconductor crystals in LEDs generate the colours directly. This gives a narrow spectrum peak (for example, 600 to 630 nanometres for red), which the human eye perceives as a very piercing light. By contrast, the new production method uses only blue semiconductors as a basis. A luminescent material with the desired colour is added in packaging, i.e. assembly. As a result the LED covers a wider spectrum (550 to 700 nanometres for red) and the colour appears softer. With this innovation, OSRAM Opto Semiconductors is able to make LEDs with exactly the kind of light its customers need. It also meets all other industry-specific requirements, as a look at the following key applications will demonstrate.

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