The LTC2875 is an exceptionally rugged, high voltage tolerant CAN transceiver that helps reduce field failures without the need for costly external protection devices. ±60V overvoltage fault protection on the data transmission lines protects bus pins during operation and shutdown, while an extended ±36V input common mode range improves data communication reliability in electrically noisy environments and in the presence of ground loop voltages. Enhanced ESD protection allows the LTC2875 to withstand ±25kV HBM on the transceiver pins without latchup or damage.
LTC2875 – ±60V Fault Protected 3.3V or 5V 25kV ESD High Speed CAN Transceiver – [Link]
by acidbourbon @ acidbourbon.wordpress.com:
Though I am a musician I don’t care for calling an expensive hi watt stereo my own. For years I have used a homebuilt stereo amplifier built around the TDA1554Q IC (basically just this chip in a nice box) and I am still very happy with the sound quality. This amp serves as a computer desk sound system, which acts as a radio/movie sound sytem as well.
In the meantime the number of sound sources that I want to connect to my “stereo” has increased … suddenly there was a tablet that I use as an internet radio, a music player demon that runs on a raspberry pi and from time to time I want to listen to a podcast that I downloaded to my smartphone.
Digitally Controlled HiFi Amp with 4 way mixer – [Link]
Drilling holes in homemade PCBs is greatly simplified with an computer-driven coordinate table on a drill press.
The clue is the on-the-fly calibration technique, so it does not matter where exactly the PCB lies on the table. You only need to move to two drill holes by hand, then the computer knows how to drive to the other holes.
(semi) Automated drill press table for PCB manufacture – [Link]
The term mechatronics engineering was coined in Japan during the 1970s, used to describe working in robotics. It has since developed as a practise encompassing electrical, mechanical, electronic and control engineering. Mechatronics combines these areas of the industry to allow the development, design and application of smart devices in an integrated, cross-disciplinary manner.
Today there is a huge industry demand for those who can work in interdisciplinary engineering environments. A career in mechatronics can lead a number of challenging roles especially in fields such as vehicle testing and manufacturing, building space, defence and industrial systems and the marketing and sales of engineering products. There is ample opportunity to work both in the UK and overseas and the field offers excellent benefits to those who work within it. Read the rest of this entry »
by Susan Nordyk @ edn.com:
A synchronous PWM controller for negative-to-negative or negative-to-positive DC/DC conversion, the LT8709 from Linear Technology is easily configured for buck, boost, buck-boost, and inverting topologies to accommodate a wide range of power-supply designs. The device’s synchronous operation means that the output diode is replaced with a high-efficiency P-channel MOSFET, increasing efficiency and allowing for higher output currents of up to 20 A. It also eliminates the heat sink typically required in medium- to high-power applications.
The LT8709 operates over an input range of -4.5 V to -80 V and produces an output from -0.1 V to as high as 60 V or from -1.4 V to as low as -80 V. Its rail-to-rail output-current monitor and control enable the device to be configured as a current source. The controller has an EN/FBIN pin that accepts slowly varying input signals, as well as an adjustable undervoltage lockout function.
Buck/boost/inverting controller delivers up to 20 A – [Link]
by Will Floyd-Jones:
When Adafruit announced their capacitive touchscreen shield, I knew I had to do something cool with it. I mocked up a design for the Château using an Atmega32u4, but once I saw this post on Hackaday, I quickly changed to the Teensy 3.1. Being able to update the display at a reasonable rate makes for a much more usable interface.
I decided to build the Reflow Château for the undergraduate ECE projects lab at my university because (A) that way I could get funding for it, (B) the existing toaster in the lab has to be manually operated and has literally blown up SMA electrolytic caps on a board of mine due to its poor temperature control, and (C) the man frowns upon the use of toasters in dorm rooms, so I needed a place to keep this thing anyway. The guy in charge of the lab requested two, so the Reflow Château actually has an identical twin.
Reflow Château – Reflow oven controller – [Link]
Linear Technology announces the LT3790, a synchronous buck-boost DC/DC controller that delivers up to 250 W of power with a single IC. Its 4.7 V to 60 V input voltage range makes it ideal for a wide variety of automotive and industrial applications. Its output voltage can be set from 0 V to 60 V, making it well suited as a voltage regulator or battery/supercapacitor charger. The LT3790’s internal 4-switch buck-boost controller operates from input voltages above, below or equal to the output voltage, making it ideal for applications such as automotive, where the input voltage can vary dramatically during stop/start, cold crank and load dump scenarios. Transitions between buck, pass-through and boost operating modes are seamless, offering a well regulated output in spite of wide variations of supply voltage. The LT3790’s unique design utilizes three control loops to monitor input current, output current and output voltage to deliver optimal performance and reliability.
60V, Synchronous Buck-Boost Controller – [Link]
PICsim emulates a microcontroller PIC16F628/16F877A/18F452 and periferics such as USART and timers, the simulator architecture permit easy implementation of external elements in c language. PicsimLab is a realtime emulator of development boards.
PICsim – PIC microcontroller simulator – [Link]
by Phil Townshend @ edutek.ltd.uk :
A nifty 32×7 dot matrix display module, programmable via an RS232 serial port. There are preset inputs to display preset messages or simply control directly from a PC or laptop.
The principle of the display is based on our persistance of vision, the same thing that enables us to watch movies without seeing the flickering changes of frame. This display has 32 LEDs horizontally by 7 vertically. At any one time there is only ever one column of LEDs lit. The on’s and off’s are presented to the anode connections while the columns are enabled one by one. In this way a dot display of characters can be generated and when the speed is increased sufficiently, we stop seeing the flickering and see it as a steady display of dots.
LED Dot Matrix Display – [Link]
KORG INC and Noritake Co., Limited are proud to announce the successful development of the ground breaking technology, Nutube, a new miniaturized and high performance tube. In cooperation with Noritake Itron Corporation, KORG INC. has developed the Nutube to offer incredible reliability and efficiency while still generating the same rich harmonics which vacuum tubes are known for. The Nutube 6P1 featuring this innovation will be on display at the Korg USA Winter NAMM Booth. KORG has used vacuum tubes for many years in products such as VOX-branded guitar amps and effect units, KORG-branded dance/DJ products such as the electribe MX/SX and keyboards such as the SV-1. Vacuum tubes have played a major role in shaping the sound of VOX and KORG products, and have been a crucial element in their distinctive character.
Innovative Vacuum Tube: the Nutube – [Link]