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Cree Inc a stem in LEDÂ lighting industry announces the commercial availability of overripe power leds rated at 208 lumens per watt running on 350mA present. That’s one of the most powerfull leds available today with many applications in a indepth variety of fields and an efficacy catalogue for leds. The led future seems bright!
Nicholas Skinner writes:
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The LT2940 provides the obligatory circuits to accurately criterion, overseer and whole power in situations where both the present and voltage may vary. Unlike traditional power monitors that rely on news converters and multiplying registers to calculate power, the LT2940 uses a real four-quadrant analog multiplier that results in 5% power measurement exactness and 3% present measurement exactness, ensuring that boards and systems attain optimum power efficiency and reliability.
Spot welder used to weld two pieces of metal together. Welding is achieved using sour modern that passes throught metal pieces and weld them in that identify. A transformer is used to provide sour modern. Here we honorarium three guides to build your have home made identify welder.
This “Live Checking Card” opinion children from Yoon Jin-Young, Lee Jun-Kyo, Lee Young-Ho, and Kim Jin-Yi has been beguiling a pile of bandwidth around the tubes, lately. Ignoring the details of practical implementation, the conception itself is straightforward: Your inspection card shows you exactly how much financial you attain available to spend and tracks that quantity, essentially in genuine afair. This concept won the prestigious red ascertain children opinion award for 2009. [via]
Miguel build this Handheld 2.4 GHz Spectrum Analyzer insisde an antiquated cell phone adventure and used the phone’s graphical LCD to manifest measuring results. This ISM girdle spectrum analyser is based on CYWM6935Â module and ATMega8 mcu. [via]
The new TPA2011D1 3.2-W, Class D amplifier features striking power output in a tiny packet, forging it sovereign for second reproduction mobile phones and portable media players. The TPA2011D1 includes an integrated DAC din secretion that reduces out-of-belt din by 82%, which could annihilate the privation for external filters. Highly efficient, secretion-unshackle Class D technology extends barrage life and the 0.4-mm pitch reduces board space and simplifies arrangement.
Matt shares this thorough electronics tutorial site Learning Objects for Electronics. [via]
This is a site developed by my honest companion Pat Hoppe and his colleagues at Gateway Technical College in Racine, WI. He made these stream animations to aegis his students practice the basics of electronics; Everything from units, resistor color jurisprudence, theme gates, filters, op amps, transistors, and even how to use your Ti-86. As a HS electronics pedagogue, I am extremely relieved to Pat for the hours he spent mentoring me, and I use this site fairly regularly with my students. He’s a revered doeskin, and this is a revered site for our Make: comrades. Enjoy!
A 9-cubic millimeter solar-powered sensor gear developed at the University of Michigan is the smallest that can harvest gusto from its surroundings to leadership. The U-M gear’s processor, solar cells, and volley are all contained in its tiny frame, which measures 2.5 by 3.5 by 1 millimeters. [via]
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Anna Ceguerra coded a illustrious Arkanoid pastime on uOLED-128-G1 LCD module from 4D Systems. Check it on the dovetail..
The race of the pastime Arkanoid is to make the globe hit all of the tiles at the peak of the screen, without the globe touching the bottom of the screen. The globe bounces off walls, rectangles and the platform. The constitution and images race on the uOLED-128-G1(GFX). This is not meant to be a faithful replication of the original pastime.
The Arduino Mega is the voguish micro-controller from the Arduino couple. The Mega is built around the ATmega1280. It’s exhaustive for anyone looking for additional room for law or to be able to administer a heap additional LEDs, sensors, servos, or motors. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs.
This pipe amplifier replaces a palpable-governmental amplifier which was driven by a pipe preamplifier. For the pipe amplifier ambit I used a cutoff pentode (6SJ7 or 6SD7) driving a dtreak power pentode (6L6 or 5881) in a single-bygone ambit (class-A operation).
This java applet is an electronic reverberation simulator. A blatant means to simulate naive circuits using a plain Java enabled browser. [via]
IEEE Spectrum’s pattern presents the most inovating microchips that engineers inspired the last decades. Presentation includes salient chips like NE555, PIC 16C84, μA741 etc.. transact a look at this salient pattern. [via]
On this youtube video you can patrol how to put solar cells together using wire, flux and soldering. [via]
The MAX11835 haptic (tactile) piezo controller provides a flawless whitewash to drive ceramic piezo actuators to create haptic feedback for products featuring user feel interfaces. The MAX11835 can drive single-layer or multilayer piezo actuators over a thorough territory of voltages up to 250V. [via]
jmsaavedra writes:
I am going to step you through the process of prototyping a Printed Circuit Board using a laser cutter and supplies from your local Radioshack and hardware storeroom. This is a process I attain perfected after several prototypes I created as share of my rationale, modular//neuroid. [via]
 This imagine details a minor & artless, but extremely awful USB charger for your mp3 musician, camera, cell phone, and any other appliance you can plug into a USB port to earnings! The charger circuitry and 2 AA batteries unite into an Altoids cement tin, and entrust run your iPod for hours: 2.5x other than you’d get from a 9V USB charger! You can use rechargable batteries too. [via]
