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Electronics For You
April 2012 Issue
Vol. 44 No. 4
Circuit Ideas
Simple Water Temperature Indicator
When bathing a baby, it’s important that the water is neither too cold nor too hot. You test the water by dipping your fingers in the bath tub before putting the baby into it.
Click Here To View Video
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Technology Focus
Visible Light Communication From Labs to Market: How Soon?
Overall, the developments are quite interesting, and we could hope to see Li-Fi and other VLC technologies in the mainstream five years down the line
| Technology Focus
Li-Fi: A New Paradigm in Wireless Communication
Lighting reaches nearly everywhere, so communications can ride along for nearly free.
Think of a TV remote in every LED light bulb and you’ll soon realise the possibilities of communications using visible light—also dubbed as Li-Fi
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Construction
Time-Controlled Switch Using PIC16F72
A time-controlled switch is an automatic timer switch that turns an appliance ‘on’ for the desired time duration.
Download source code
| Circuit Ideas
Versatile DC-DC Converter
Here is a versatile power coupler that connects a device to 5V-19V DC generated from
AC mains by a power adaptor. Power adaptors come in different voltage outputs like 5V (for mobile phones), 12V (for external hard drives) and 19V (for laptops).
Click Here To View Video
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Circuit Ideas
Simple Parking Counter
This simple circuit can be used to count the number of cars entering a parking lot.
Click Here To View Video
| Wireless
IEEE 802.11ac: Next-generation Standard for Wireless Fidelity
IEEE 802.11ac, the new WLAN standard, promises lower latency over the network as well as lower power consumption. Though it is yet to be ratified by the Wi-Fi Alliance and IEEE, we have already begun to see products based on this standard and also design and test solutions available
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Solar
Why Distributed Solar Power Is Crucial
Sunlight is omnipresent. Why then centralise such well-distributed energy into a multi-megawatt solar farm, and redistribute it, losing 25 per cent in transmission?
| EFY Report
Is Solar Going As Planned?
Most of the equipment orders for the solar PV plants to be built in India are going to foreign manufacturers. The plants of Indian manufacturers, on the other hand, are lying shut or not operating at full capacity for want of orders. Did we really want that to happen?
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Career
Why Settle for Solar
Both sides of the solar business—equipment manufacturing and power generation— need people to cash in on the growth in the solar industry. Solar PV systems involve use of semiconductor technology. Hence electronics engineers, along with mechanical and electrical engineers, have a role to play in the solar industry
| Innovation
Low-Cost, Fail-proof Root Canal Machine
A dentistry student has designed a machine that achieves three-dimensional obturation of
the root canal, guaranteeing prevention from re-infection. The device costs just Rs 1000 compared to other devices costing Rs 100,000-125,000
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Health
Cellphone Hazards And Recommendations
Mobile phones have been found to cause changes in the brain activity, reaction times and sleep patterns. The length of cellphone call affects the intensity of these symptoms. As it’s not possible for us to stop using mobile phones altogether, precautionary measures are needed to avoid their ill effects
| Healthcare
Portable Medical Electronics: What’s Inside?
Making smarter portable devices calls for more capable MCUs. Semiconductor manufacturers are rising to the challenge by coming up with innovative solutions that make medical devices portable, low-power, safe, secure, reliable and connected
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Events
Winners Announced !
The eighth edition of EFY Awards were given away on March 16 at a ceremony held in Le Meridien Hotel, Bengaluru. These awards are known for recognising the contribution of leading people and companies in the Indian electronics industry.
| Interview
We expect to see 50 fabless semiconductor
companies
Every year at ISA Vision Summit, people from the electronics industry come together to discuss what will drive the industry. The summit looks at what can be done to make India a better place to do business and a better market for electronics. P.V.G. Menon, president, India Semiconductor Association (ISA), speaks to EFY’s Jalaja Ramanunni and Dilin Anand about highlights of this year’s ISA Vision Summit and the Indian electronics industry
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Interview
Energy efficiency is not just about consumption
Germany-based Infineon Technologies AG offers
semiconductor and system solutions addressing central challenges to modern society. The company’s India office in Bengaluru is a major development centre of its R&D network, and plays a vital role in software development and hardware design.
Arunjai Mittal, Member of Management Board, Infineon Technologies AG, speaks to Jalaja Ramanunni and Dilin Anand of EFY on how energy efficiency can be best achieved and what Infineon Technologies is up to
| Technology
Hatching Eggs Electronically
One major advantage of electronic egg incubators is their ability to automatically maintain optimal temperature and humidity required to incubate eggs. Here is what goes inside them
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Buyers’ Guide
Electronic Tool Kits for the Pros
You might have ordered a do-it-yourself kit for a project, say, an Arduino-based Ice Tube Clock kit, which comes with everything from the vacuum fluorescent tube to the software that runs it. But to assemble the project, there are certain tools that you need to have first
| Construction
Car Bonnet Light Control Using Tilt Sensor
Usually, cars do not have a lamp to light the engine compartment. A hands-free, under-hood light source is useful when it is dark and you have to fix a problem inside the engine compartment.
Download source code
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Software Section
Digital Clock with Am and Pm Display
Seven-segment LEDs are widely used to display decimal numbers. Their major applications are in digital clocks, electronic meters and other numeral displays.
Download source code
| Circuit Ideas
Intercom Using LM386
Keep in touch with your family members from one room to another and also from outside areas such as the garage, using this intercom circuit for bidirectional communication. The advantage of this circuit is that there is no talk/listen switch as many intercoms have.
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Circuit Ideas
Driveway Alarm
You can install this system in the driveway itself to detect intrusion by a vehicle, person or large animal. It sounds an alarm when
any intrusion takes place.
| Internet
Smart Ways To Leverage LinkedIn For Your Business
Know how companies like Volkswagen India and Philips are using LinkedIn as a tool to complement their marketing strategies, become thought leaders in their domain, reach potential buyers and do a lot more
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First look!
. Android Tablet
. CDMA Tablet
. Ultrabook
. Wireless Gaming Headset
. QWERTY Smartphone
. 3D Home Theatre System
. Wireless Keyboard for Blackberry Tablet
. LED TV with 17mm Narrow Bezel
. GizMo ByTes
| Next
Issue...
Green Buildings
Inverters & UPS
Compact Digital Cameras
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