IEEE Spectrum

IEEE Spectrum


How Significant Is Methane Leakage?

Posted: 31 Jul 2013 08:28 AM PDT



If leakage is severe, the supposed climate benefits of switching to natural gas could be nil

EUV Chipmaking Inches Forward

Posted: 31 Jul 2013 07:36 AM PDT



ASML says extreme-ultraviolet-light machines should be bright enough for commercial production by 2015

HyQ Quadruped Robot Learns to Avoid Stumbles, Visits London

Posted: 31 Jul 2013 05:49 AM PDT



This Italian four-legged robot won't fall on its face

Ozzie Zehner Responds to His Critics

Posted: 30 Jul 2013 03:51 PM PDT



Expensive green technologies aren't as clean as they seem

Letters to the Editor: Responses to “Unclean at Any Speed”

Posted: 30 Jul 2013 03:49 PM PDT



IEEE members weigh in on EVs and the importance of transportation electrification

A Rebuttal: EVs are Clean at Every Speed

Posted: 30 Jul 2013 03:45 PM PDT



We need to develop electric transportation technology in order to reap the environmental and, yes, the economic benefits that it clearly promises

Electric Vehicles Need More Study, Less Emotion

Posted: 30 Jul 2013 03:43 PM PDT



If you've never touched a live wire, try writing about plug-in electric cars

EVs and the Environment: The Discussion Continues

Posted: 30 Jul 2013 03:41 PM PDT



Questions about how to evaluate the greenness of electric vehicle technology provoke heated debate

Urban Organics Starts Up Aquaponics System

Posted: 30 Jul 2013 02:04 PM PDT



The water is flowing and the bacteria growing at Urban Organics

Bubble Fusion Bubbles Up Again

Posted: 30 Jul 2013 12:50 PM PDT



New investigation of "bubble fusion" could reignite controversy and might vindicate some controversial claims

Peru Will Provide Solar Power to Half a Million Poor Households

Posted: 30 Jul 2013 12:10 PM PDT



Too remote for the grid, solar could come to the rescue

Huge Six-Legged Robot Crabster Goes Swimming

Posted: 30 Jul 2013 12:03 PM PDT



Next time you're at the beach, watch out for giant crab robots

Water-Enabled Lithography Creates Long Graphene Nanoribbons

Posted: 30 Jul 2013 11:00 AM PDT



New method does not require complicated lithography equipment, just atmospheric water

Hack Your Own Wireless Leash

Posted: 30 Jul 2013 10:47 AM PDT



Turn a Nike + iPod sensor and Arduino into an inexpensive system to track belongings

Germany's Largest Offshore Windfarm Hits a Snag

Posted: 30 Jul 2013 10:09 AM PDT



Unexploded World War II ordnance is a bigger problem than expected

News post : Electronic Projects Circuits :Eleccircuit.com

News post : Electronic Projects Circuits :Eleccircuit.com

Link to Electronic projects circuits

LM317 voltage regulators

Posted: 31 Jul 2013 12:51 AM PDT

In the event of we need to build a variable DC power supply that output of 1A and can adjust up to about 30V. Most people will use LM317 because high-efficiency, easy to apply and cheaper Description It have an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5 A of load current [...]

Simple nonlinear low pass filter

Posted: 30 Jul 2013 09:31 AM PDT

This is a simple low pass frequency filter circuit on nonlinear passive. We use passive components without transistors and any ICs. So is easy circuit. and It is small size and easy to made for do not used the external power supply, but refuse a lot of noise ripples and need to a input voltage [...]

The CD4049 Hex inverter simple datasheet

Posted: 30 Jul 2013 05:09 AM PDT

The CD4049 is a CMOS logic chip, that is six independent inverter. It is used for interfacing and to make simple clock pulse generators and oscillators. Connect two in series to make a non-inverting buffer. The input-signal high level (VIH) can exceed the VCC supply voltage when these devices are used for logic-level conversions. These [...]

IEEE Spectrum

IEEE Spectrum


A Birthday For Pixar’s RenderMan Software

Posted: 29 Jul 2013 01:28 PM PDT



Pixar is celebrating 25 years of making movies using RenderMan software, but the technology dates back much further.

China's New Solar Price

Posted: 29 Jul 2013 10:36 AM PDT



European settlement of trade dispute, though a capitulation, does set a price floor

IT Hiccups of the Week: Ohio Bank Blames GPS for Wrong House Repossession

Posted: 28 Jul 2013 09:41 PM PDT



Technology problems blamed for surgery errors, credit card processor drops decimal point

Nanoparticles Emitted from 3D Printers Could Pose a Risk

Posted: 28 Jul 2013 09:38 PM PDT



Emission rates are on par with other household devices, but the particles may be more toxic

Hexapod Figures Out How to Walk After You Chop Its Leg Off

Posted: 28 Jul 2013 09:02 PM PDT



It's going to take more than a missing leg to slow this robot down

News post : Electronic Projects Circuits :Eleccircuit.com

News post : Electronic Projects Circuits :Eleccircuit.com

Link to Electronic projects circuits

1 minute to 4 hour Alarm Clock Timer using CD4060

Posted: 29 Jul 2013 09:05 AM PDT

This circuit is the Alarm Clock Timer circuit with PCB. When rises time that is set, Suppose set 5 minutes time. after all time to 5 minutes. the circuit will emit a sound of buzzer once. This circuit use volume and switch to set time clock. Special feature -Use 9V battery -Use current around 23mA [...]

IEEE Spectrum

IEEE Spectrum


OSI: The Internet That Wasn’t

Posted: 29 Jul 2013 06:16 AM PDT



How TCP/IP eclipsed the Open Systems Interconnection standards to become the global protocol for computer networking

News post : Electronic Projects Circuits :Eleccircuit.com

News post : Electronic Projects Circuits :Eleccircuit.com

Link to Electronic projects circuits

74HC4066 Quad analog switch CMOS data-sheet

Posted: 28 Jul 2013 08:59 AM PDT

The 4066 is a high speed cmos Quad logic chip containing with silicon gate Cmos technology,for analog switches that can be switched ON or OFF by external logic signals. It consists of four independent high speed switch capable of controlling (very useful for switching) either digital or analog signals, while maintaining the CMOS low power [...]