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Powdered-iron-based receiver coil designed for 5 V wireless charging
July 13, 2012 // Jean-Pierre Joosting
Vishay Intertechnology has announced a powdered-iron-based, WPC-compliant (Wireless Power Consortium) receiving coil for the wireless charging of 5 V portable electronics.
Offering a durable construction and high permeability shielding, the IWAS-3827EC-50 provides high efficiency greater than 70% for receiver applications to 10 W and is 33% smaller than the standard 48 mm by 32 mm IWAS-4832FF-50 receiver coil, with dimensions of 38 mm by 27 mm.
For wireless power base stations and receivers, the IWAS-3827EC-50's high-saturation powdered iron is not affected by permanent locating magnets, and the device shields sensitive components or batteries from charging flux. As an alternative to Ferrite-based solutions, which can saturate in the presence of a strong magnetic field, the IWAS-3827EC-50 offers a magnetic saturation of 50% at 4000 gauss.
The RoHS-compliant device features inductance of 10.7 µH at 200 kHz with a ±5% inductance tolerance, DCR of 183 mΩ at + 25 ºC, and Q of 30 typical at 200 kHz. The receiving coil features a lead length of 50 mm and tinned length of 10 mm.
www.vishay.com
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May 24, 2013
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Filter Wizard
Check out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
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The development platform for i.MX 6Quad from element14 (built to the Freescale SABRE Lite design) is an evaluation platform featuring the powerful i.MX 6Q, a multimedia application processor with Quad ARM Cortex-A9 cores at 1.2 GHz from Freescale Semiconductor.
This month, Freescale and element14 are giving away five such platforms, worth £128.06 each, for EETimes Europe's readers to win. The platform helps evaluate the rich set of peripherals and includes a 10/100/Gb Ethernet port, SATA-II, HDMI v1.4, LVDS, parallel RGB interface, touch screen interface, analog headphone/microphone, micro TF and SD card interface, USB, serial port, JTAG, camera interface, and input keys for Android.
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In our previous reader offer, Pico Technology was giving away one of its recently launched PicoScope 3207B, a 2-channel USB 3.0 oscilloscope worth 1451 Euros. Lucky winner Mr L. Sanchez-Gonzalez from Spain should be receiving his PicoScope 3207B soon. Let's wish them some interesting findings with his projects.
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December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.
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