Dutch Techies Build Bladeless Wind Power Plant

Dutch Techies Build Bladeless Wind Power Plant

A wind-driven electricity generator without moving mechanical parts is adorning the lawn of Delft University of Technology, The Netherlands. The Electrostatic Wind-Energy Converter (EWICON) could unobtrusively function in an urban landscape.

Wind turbines supply a significant part of the renewable energy mix. But wind farms meet a lot of resistance from local populations because of noise pollution, flickering shadows and birds getting killed. The EWICON, which looks like wire mesh artistically framed in a giant 0, eliminates these negative aspects. Also, the absence of moving parts reduces maintenance costs significantly.

Prof. dr. Johan J. Smit High head of the Voltage Technology & Management Institute of Delft University explains how the EWICON works. ‘Using high voltage, electrically charged droplets of water are produced in the horizontal elements. At the same time these horizontal elements, which are electrodes, generate an electric field. As the wind forces the electrically charged droplets against this electric field towards the earth, the converter is charged to DC voltages of between 80 and 100 kilovolts. After conversion to AC, this can then be used to supply power to the electricity grid.’

The bladeless electricity generator installed on the University’s campus is a working prototype. The output power is dependent on a variety of factors like the method used to generate the aerosol of charged droplets, the size of the droplets, the flow rate of the liquid, electrode configuration, humidity of the environment and wind speed. Funding is needed to continue the development and the upscaling of the EWICON.

Its unobtrusive nature makes the power plant suitable for installation in urban areas. At the same time, its low maintenance requirements makes the EWICON an interesting candidate for off-shore wind farms.

For deeper understanding of the complexity of the system read the 2011 master thesis of Arjan Winters.

EWICON was developed in a collaborative effort of Delft University, Wageningen University and four commercial businesses. Physicist Piet Sonneveld of Wageningen University devised the bladeless wind energy converter and delivered proof of concept in 2002. The prototype was designed by engineer Francine Houben of architecture firm Mecanoo.

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Categorías:News

LIN

LIN Overview

LIN (Local Interconnect Network) is a low cost, single-wire, serial communication system. It has been widely adopted by the automotive industry to support the increasing number of distributed electronic systems in today’s vehicles. It enables the OEMs to design cleaner, safer, smarter and more efficient vehicles while addressing design challenges such as lower system cost, lower power consumption and weight reduction. Some target applications are body control, intelligent sensors and switches and energy management.

Microchip’s products, development tools and support provide users with a complete and reliable design solution, to meet the market’s growing demands.

OEM Approved
LIN Transceivers


  • Compliant with LIN 2.1 and SAEJ2602
  • Industry-leading ESD/EMC performance
  • Extremely low current consumption

Microcontroller eXtreme
Low Power Technology


 

Target
Applications


  • Body control
  • Intelligent sensors and switches
  • Energy management
Categorías:Microcontroladores, Wired

MDL DC Electronic Load Series

The MDL Series is a multi-channel modular programmable electronic load system. Six different modules of programmable DC loads ranging in power from 200 W to 600 W provide users the flexibility to test a wide range of power sources from multi-output AC/DC power supplies to batteries, fuel cells, and photovoltaic arrays.

The mainframe has four slots that can be configured with any assortment of the modules up to 2400 W (up to 4800 W with mainframe extension). The high-performance electronic load modules of the MDL Series are capable of operating in constant current (CC), constant voltage (CV), constant resistance (CR), constant power (CW), and constant impedance (CZ) mode, which uses DSP technology to simulate non-linear loads and realistic loading behavior.

  • Modules offer wide voltage and current range, 0 to 500 V, 0 to 120 A
  • Support for up to 8 or 16 channels with mainframe extension
  • Transient mode up to 25 kHz
  • Synchronous Load on/off function
  • Adjustable slew rate in CC mode
  • Standard LAN, GPIB, USB, and RS-232 interfaces with USBTMC/SCPI protocol support
  • Short circuit test
  • Built-in 16-bit resolution voltage and current measurement (0.1 mV, 0.01 mA)
  • Remote voltage sensing to compensate for the effect of voltage drop in wires
  • Operate identical modules in parallel mode for high current applications
  • OVP/OCP/OPP/OTP and reverse voltage protection

*MDL252 is a dual-channel module supporting a unique flexible power configuration. The user can allocate 250 W to either channel up to 300 W total (e.g. 50 W/250 W, 250 W/50 W, 150 W/150 W).

  Mainframe  Mainframe Extension Modules
Model MDL001 MDL002 MDL200 MDL252 MDL305 MDL400 MDL505 MDL600
Power up to 2400 W total up to 2400 W total 200 W 250 W* 300 W 400 W 500 W 600 W
Voltage n/a n/a 80 V 80 V 500 V 80 V 500 V 80 V
Current n/a n/a 40 A 20 A 20 A 60 A 30 A 120 A
Inputs n/a n/a 1 2 1 1 1 1
Categorías:News

XLP 16-bit Development Board

The XLP 16-bit Development Board is designed with eXtreme Low Power in mind.  Designed as a true platform for low power development, it enables designs with sleep currents as low as 20nA.

The board is suitable for prototyping many low power applications including RF sensors, data loggers, temperature sensors, electronic door locks, metering sensors, remote controls, security sensors, smart cards, and energy harvesting. The PICtail™ interface supports Microchip’s extensive line of daughter cards for easy evaluation of your next low power application.

This low cost board is the ideal complement to the MPLAB® PICkit 3 or ICD 3 debugger and programmer realizing a fully-featured, economical, PIC24 development environment.

XLP 16-bit Development Board Features
● PIC24F16KA102 (16KB Flash, 28-pins, XLP Device with 20nA Deep Sleep current )
● Supports other PIC24F devices in 20 or 28-pins
● Current measurement terminals allow device or board level current measurements (optional XLP Current Measurement Cable available)
● PICtail ™ daughter board connector for connection to expansion boards such as RF, SD/MMC Cards, Speech Playback and more
● mTouch™ capacitive sensing buttons for user input
● Expansion connector accessing full device pin-out and breadboard prototype area
● Convenient connections for MPLAB PICkit 3, ICD 3 or REAL ICE for in-circuit programming and debugging
● USB interface for power and PC communication
● 24AA256 Low Power (100nA Sleep, 1.7V Vdd) SPI serial-EEPROM
● Crystal oscillators for main clock and Real-time Clock and Calendar
● Potentiometer (connected to 10-bit A/D, analog input channel)
● Analog output temperature sensor and CTMU based diode temperature sensor
● LEDs for indication
● Optional RS-232 port (not populated)
● Power Options: AAA, CR2032, Energy Harvesting, USB, External, or 9V power supply

Más Información

MCC USB 200 series.

12-Bit Data Acquisition Devices with 8 Analog Inputs

USB-200 Series

Key Highlights

-8 SE analog inputs

-12-bit resolution

-Up to 500 kS/s sampling rate

-8 digital I/O

-One 32-bit counter

-OEM board only versions are available

Software

-TracerDAQ® software included for acquiring and displaying data and generating signals

-Universal Library includes support for Visual Studio® and Visual Studio® .NET, including examples for Visual C++®, Visual C#®, Visual Basic®, and Visual Basic® .NET

-InstaCal™ software utility for installing, calibrating, and testing

-ULx for NI LabVIEW™

-DAQFlex open-source software framework

-Comprehensive drivers for DASYLab®

-Supported Operating Systems: Windows® 8/7/Vista®/XP SP2,
32-bit or 64-bit; Linux®, and Mac® platforms supported by the
DAQFlex framework

Nuevos Productos BK Presicion

Novedades BK Marzo 2013

Osciloscopios de Almacenamiento Digital

-12 Unidades Diferentes
-Rangos entre 25 MHz – 300 MHz
-Velocidad de Muestreo
500 MSa/s – Modelos 2530B y 2532B
1 GSa/s – Modelos 2540B y 2542B
2 GSa/s – Modelos 2553, 2555, 2556, 2557, 2558 y 2559
-Canales Múltiples
2 Canales: 2530B, 2532B, 2540B, 2542B, 2556 y 2558
4 Canales: 2553, 2555, 2557 y 2559
-Operación en Lenguaje Múltiple incluyendo Español
-Generador de Formas de Ondas Arbitrarias en 2540B-GEN y 2542B-GEN
-Software y Conectividad LAN y USB Estándar, RS232 (en 250B-2532B)

255x_hoja_de_datos

he 2550 Series digital storage oscilloscopes deliver performance and value in 2-channel and 4-channel configurations. With bandwidth from 70 MHz to 300 MHz and 2 GSa/s sample rates, these oscilloscopes offer 24 kpts/Ch waveform memory, 32 automatic measurements, and advanced triggering capabilities including math functions. Engineered to allow you to see more of your signal under test, the 2550 series’ widescreen 7” TFT display offers a significantly larger viewing area than typical economy oscilloscopes (5.7”).

  • Bandwidth up to 300 MHz
  • 2 GSa/s sample rate
  • 4-channel acquisition (on select models)
  • Large 7″ widescreen color display
  • 32 automatic measurements
  • FFT plus four additional math functions
  • Built-in context sensitive help system
  • 50 Ω input coupling
  • PC software that lets you remotely control the oscilloscope and capture, save, and analyze waveform data
  • Front and rear panel USB host port for convenient storing and recalling of waveform data, setups, and screenshots on a USB flash drive
  • Standard LAN (supports SCPI) and USB device port (USBTMC compliant) for remote PC control
Model Guide
Model 2553 2555 2556 2557 2558 2559
Bandwidth 70 MHz 100 MHz 200 MHz 200 MHz 300 MHz 300 MHz
Channels 4 4 2 4 2 4

Modelo P771 – Medidor de pH

Un nuevo medidor de bolsillo, durable y exacto…

Description:

The P771 pH meter is a highly accurate, pocket-sized pH meter perfect for use in field environments and applications. With this meter you can easily and accurately measure the pH balance of liquids. Contained in a rugged, waterproof housing, with replaceable electrodes, this meter will give long durable service. High 0.01 pH resolution and ±0.02 pH accuracy gives you lab quality results at your fingertips. Automatic temperature compensation (ATC) adjusts for changes in pH due to temperature so you can be sure of your results.

Features:

  • Fast response, reliable and accurate measurements
  • High resolution (0.01 pH)
  • High accuracy ( ±0.02 pH)
  • Measures 0.00 ~ 14.00 pH
  • Impact resistant ABS waterproof housing (meets IP57 standards)
  • Compact size fits easily into your pocket
  • Automatic temperature compensation
  • Replaceable electrodes
  • Large 21 x 18 mm, 3 digit, LCD display
  • Easy 2-point calibration with included pH 4 & 7 buffer solutions
  • Comes ready-to-go with two long-life 3-V Lithium batteries

Applications:

  • Agriculture
  • Anti-freeze recycling
  • Aquariums
  • Boilers
  • Chemical industry
  • Cooling towers
  • Drinking water
  • Fish farming
  • Food industry
  • Hydroponics
  • Laboratory usage
  • Plating industry
  • Swimming pools and spas
  • Water treatments facilities
Categorías:News

Upgrading the antennas on your WiFi access point- How to determine the correct AP connector

febrero 13, 2013 Deja un comentario

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A common question customers often have is: “How do I upgrade my access points’ antennas?” or “How do I identify the type of connector on my WiFi access point or router?” First you must check to see if the antennas on your access point are removable.

Front of an EnGenius wireless access point (AP) showing antennas behind Back of an EnGenius wireless access point (AP) showing antennas

Front and back of a WiFi Access Point showing removable rubber duck antennas installed

Back of an EnGenius wireless access point (AP) showing antennas removed

Back of a WiFi Access Point showing rubber duck antennas removed

Next you need to identify the type of antenna connector on your access point. Check with the manufacturer’s website or user manual for your specific make and model listing for the antenna connector type. If you cannot find it on the manufacturer’s web site, you can compare it with our common RF connector chart shown below.

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Categorías:News, Wireless