Electronics
Underwater Solar Cells?
Posted in Electronics, Power Management, Sensors, Solar Power, Renewable Energy, Energy Harvesting, News on Thursday, 07 June 2012
Scientists at the U.S. Naval Research Laboratory, Electronics Science and Technology Division, have developed high-band-gap solar cells capable of producing sufficient power to operate electronic sensor systems at water depths of 9 meters.
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New Approach to Graphene Electronics
Posted in Electronics, Power Management, Materials, Solar Power, Energy Efficiency, Renewable Energy, LEDs, News on Tuesday, 21 February 2012
Graphene has been touted as the next silicon, but it is too conductive to be used in computer chips. A University of Manchester team led by Nobel laureates Professor Andre Geim and Professor Konstantin Novoselov has literally opened a third dimension in graphene research.
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EMI Filters
Posted in Electronics & Computers, Electronics, Products, MDB on Wednesday, 01 February 2012
LCR Electronics (Norristown, PA) offers two new series of EMI filters for MRI shielded rooms. The 058 series filters are designed to mitigate any unwanted EMI noise through MRI room telephone, alarm, and data lines. The UL-recognized 059 series filters provide EMI suppression along the main power lines. The dual line filters are rated 120/277 VAC 50/60 Hz up to 50 A at 60 °C, 300/600 VDC lineto- ground and line-to-line, all with an impedance line-to-line rating of 600 ohms and a line-toground rating of 300 ohms. The series has a stop band of 100 dB from 20 KHz to 10 GHz for phone lines, 100 dB from 150 KHz to 10 GHz for data lines, and 100 dB from 14 KHz to 1 GHz for alarm lines. Individual or multiple 058 filters can be supplied pre-installed in an enclosure with removable covers for I/O connections and a threaded conduit pipe for installation against shielded room interference. The 059 filters are available in single, dual, and three-phase configurations and provide 100 dB attenuation from 5 MHz to 10 GHz per MIL-STD-220 and feature a sealed filter compartment with a removable shielded cover for input connections as well as a threaded conduit pipe for installation against shielded room interference.
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External Power Supplies
Posted in Electronics & Computers, Electronics, Products, MDB on Wednesday, 01 February 2012
The DTM110-C series of medical-certified AC-DC external power supplies from TDK-Lambda (San Diego, CA) offers output power ratings from 90 to 110 watts. Typical operating efficiencies are greater than 85%. Available output voltages include 12V, 13.5V, 15V, 19V, and 24V. The series operates with a universal AC output of 90 to 264Vac (47-63Hz) and include PFC. The external power supplies are packaged in low profile and insulated enclosures that measure 2.55" wide by 6.7" long by 1.51" high and are convection cooled. The operating temperature range is 0 to 40 °C at full load with no deratings required.
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Integrated DC/DC Converter
Posted in Electronics & Computers, Electronics, Products, MDB on Sunday, 01 January 2012
iC-Haus GmbH (Bodenheim, Germany) offers a 4- 36 V buck/boost DC/DC converter with two programmable voltages ranging from 1.5V to 5.5V for the compact voltage supply of industrial sensors and small subsystems. It achieves a residual ripple of typically 10 mVpp – suitable for the supply of precision analog circuits. The buck/boost switching converter technology used here makes any distinction between devices supplied with 5V or 10-30V unnecessary, as a steady +5V supply is provided for sensor electronics. The two independently adjustable output voltages Vcc1 and Vcc2 can provide a total of 300 mA and supply digital and analog circuit components separately. The switching converter typically operates at 3 MHz, reducing the size of the external coil to approx. 2 mm × 2 mm and that of the external back-up capacitors to a few microfarads while adhering to the EMC requirement for industrial sensors.
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Self-Healing Electronics Could Reduce Waste
Posted in Batteries, Electronics, Recycling Technologies, News on Wednesday, 21 December 2011
When one circuit within an integrated chip cracks or fails, the whole chip – or even the whole device – is a loss. University of Illinois engineers have now developed a self-healing system that restores electrical conductivity to a cracked circuit in less time than it takes to blink.
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Efficient Method for Creating Flexible, Transparent Electrodes
Posted in Electronics, Materials, Metals, Solar Power, Renewable Energy, News, GDM on Tuesday, 22 November 2011
As the market for liquid crystal displays and other electronics continues to drive up the price of indium — the material used to make the indium tin oxide (ITO) transparent electrodes in these devices — scientists have been searching for a less costly and more dynamic alternative, particularly for use in future flexible electronics.
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