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Power Over Ethernet Solutions
By Eddie Insam

Powering devices over Ethernet cabling seems easy, but there's more to it than meets the eye. In this article, Eddie Insam explains how it all works.

So you've designed a brand new Ethernet-based device. Perhaps it's a clock, a weather sensor, or an industrial controller device. You plan to hang it proudly on your wall and connect it to a RJ-45 wall socket. But how are you going to power it? Where will the system get its juice? Surely, you aren't going to disgrace your design with a brick wart. There must be a better way!

Why not feed power over the CAT-5 cable? Well, you're not the first person to consider this technique. Continue Reading & Download


INDUSTRY NEWS

Infineon Technologies recently introduced its first devices in a family of Gallium Nitride (GaN) on Silicon Carbide (SiC) RF power transistors. The devices enable mobile base station manufacturers to build smaller, more powerful and more flexible transmitters. With higher efficiency, ... Continue reading →...�


 

Microchip Technology recently announced the MEC14XX family of highly configurable low-power embedded controllers, which enables multiple I/O signals to be configured to support either 3.3 or 1.8 V and reduces materials cost by eliminating the need for external voltage translators. ... Continue reading →...�


 

CML Microcircuits recently released the CMX994A and CMX994E Direct Conversion Receiver (DCRx) ICs. The CMX994A and CMX994E are RF receiver ICs-which feature I/Q demodulators with low-power consumption and high-performance features-are targeted at narrowband and wideband Software Defined Radios (SDR) for wireless data and ... Continue reading →...�


 

LabNation's SmartScope is the world's first 100-Msps open-source USB oscilloscope for smartphone, tablet, and PC is now available at a special low price for a limited time only. Order the SmartScope beforeTuesday, September 15, 2015 to save over $30. Features, ... Continue reading →...�

ELECTRICAL ENGINEERING CHALLENGE - September
Sponsored by Netburner 

Ready for an Electrical Engineering Challenge? This is your chance to put your technical skills to test. The September Electrical Engineering Challenge (sponsored by NetBurner) is now live.

THE CHALLENGE
Find the error in the code below. Submit your answer via the online submission form by the deadline of September 20, 2015 (2 PM EST).
Find the error in this code. Click the image to submit your answer via the online submission form by September 20, 2015.

PRIZES
Circuit Cellar will randomly select 2 prize winners from the pool of respondents who submit the correct answer. One person will receive a NetBurner MOD54415 LC Development Kit ($129 value). A second will receive a Circuit Cellar Digital Subscription (1 year).
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CURRENT ISSUE - SEE INSIDE

Circuit Cellar #302
September 2015

Embedded Solutions | Secure Hash Standard | Quantitative Application for WAT_AN_APP | Sustainable Big Data Analysis | Transformers 101 | Build a Desktop Radiation Monitor | Introduction to the Wiegand Layer & Protocol | And More