Latest Design News: IoT and A New Generation of LED Bulbs

-


EE Web electrical Engineering Community

Latest Design News

October 29, 2015
Featured Product News
Featured
ZVS Buck Regulators Convert 48 V Direct to PoL 
Vicor’s Zero-Voltage Switching (ZVS) Buck Regulators combine high performance with ease of design and operating voltages that cover a large range of applications... Try them now
FIT7A: Fit for Speed and Precision
Our new FIT7A digital load cell sets new standards in precision and speed for dynamic weighing processes. The FIT7A is up to 60% less expensive than other load cells based on electromagnetic force compensation... Read More
True-rms AC/DC Clamp Meter with iFlex®
Often the most frustrating task for electricians and maintenance technicians is to troubleshoot intermittent faults because they rarely occur at convenient times... Read More
36 V Zero Drift Instrumentation Amp
Texas Instruments rolled out its first zero-drift, 36-V instrumentation amplifier. The INA188 delivers high accuracy for precise DC and low-frequency measurements in applications such as test and measurement... Read More
IAR Systems Invests in the IoT
IAR Systems® introduced IAR Connect™, a portal that presents product development platforms, as well as a meeting point connecting people interested in the Internet of Things and other emerging technologies in the connected world... Read More


Postagens mais visitadas deste blog

The Mystery of USB Chargers

-
Imagem
By  Jestine Yong  on July 9, 2014 Almost any new device such as mobile phone, tablet, iPod, GPS etc… will come with some sort of USB Charger and a cable. The cable will connect to your device through a dedicated connector, mini USB, micro USB or manufacturer’s specific. At the other end, most cables will be terminated with the familiar USB connector (USB type A), which you can connect either to the charger or to your computer. If you are like the 50% of mobile phone users you will buy a second charger, just to have one at work and one at home. Over the years, you will end up with several USB chargers and you might wonder if you could simplify your life by having only one charger, or at least a couple of chargers, for all your devices. The problem is that they are not all compatible. Your Samsung charger will not work with your Apple device etc… In this article we will analyze some USB chargers and find out why they are so different. And may be find out that they are ...
Leia mais

Programação de um CLP: Modos de programação

-
Imagem
No seguimento do curso de Automação, neste artigo apresento como perceber os conceitos básicos de programação de um CLP. No decorrer das próximas edições apresentaremos a forma de programar um controlador lógico programável Autores: Filipe Pereira - Eng. Elétrotécnico / Automação Klean Energie 4 Life, Ltda Energias Renováveis - Portugal As linguagens de programação são empregadas nos CLPs desde que estes surgiram em 1960. Estas permitem ao usuário inserir programas de controle utilizando sintaxes pré-estabelecidas. Previamente ao estudo dos três tipos de linguagem mais utilizados na programação de CLPs, convém rever alguns conceitos essenciais. O programa que vai definir o automatismo é constituído por uma série de instruções e funções onde são operados os bits de memória. Estas instruções e funções, serão introduzidas na memória do CLP, através de um periférico destinado a esse fim e que poderá ser uma console de programação ou software específico para PC. Veja na figura 1 u...
Leia mais

Subwoofer Repair

-
Imagem
By  Jestine Yong  on December 3, 2013   A customer brought this powered speaker for repair. It is a Wharfedale Titan 12’ subwoofer Amplifier. The complaint: No power. I opened the unit checking the usual things such as the fuse, EMI filter coils, voltage on filter caps etc. These all checked out fine, and I measured 320VDC over the two filter caps. The unit uses a SMPS. The smps and class-D Amplifier, are both on the same board. I then connected my analog meter to one of the secondary output lines going to the amplifier. There was no voltage here, and nothing on any of the other output lines going to the pre-amp board. I then proceeded to check if it is a shutdown problem, by switching the unit on and watching to see if the needle on my analog meter jumps up for a brief moment. No movement at all. This made me believe I have a primary –side fault. I checked the two, main switching Mosfets  and they were good. From the below photo you can ...
Leia mais