A Brief Introduction To Bluetooth by Oliver Dvorak
Bluetooth was designed to allow low bandwidth wireless connections to become easy to use so even those who are new to wireless can use them. Version one.One of Bluetooth describes a low power, short range wireless networking technology that uses radio waves to send data at rates up to 720... Bluetooth Spec The specification for Bluetooth supplies for different classes of radio that allow transmission ranges of up to 100 meters by boosting the radio power. ... The radio is power friendly and the software for Bluetooth is very configurable, limiting the power consumption of equipment.

Tips for Designing ZigBee Applications by John Sawyer
So you think you want to develop a ZigBee application, but you have some questions. What’s important in a ZigBee development? What tools do I need? What steps are involved? How much time will it take? What kind of investment is required? What are the unforeseen questions? ... It seems counterintuitive; however, since ZigBee transmissions are at low RF power - in the range of a milliwatt - battery power usage during transmit and receive modes are similar. ... The typical ZigBee network configuration is comprised of low power reduced function end point devices, generally called sensors.

The Ten Most Common Mistakes When Buying an MP3 Player (and How to Avoid Them) by Hans Dekker
One of the most common reactions after buying a new MP3 player is "GEE! My player doesn't have X!” Substitute “X” for FM radio, microphone, or enough memory and you get an idea of some of the options which are available on MP3 players. Everybody has different requirements for an MP3 player, so... Do you need an FM radio for keeping up-to-date on the weather reports or traffic conditions? ... Low (or high) bitrates are not supported. ... This is enough power to keep you in music for several days before recharging.

Testing a Transformer- How To Accurately Test A Transformer by Jestine Yong
There is two types of transformers in the market- linear transformer and switch mode power transformer. The transformers design is different. Sometimes it is just referred as ac transformer. Linear transformer mostly used in radio, project kits, VCD and etc while switch mode transformer can be... You cannot apply ac voltage to the equipment and expect the desire output at the secondary side without connect to load otherwise over voltage will happen (because you have removed all the secondary load) and will blow the power section which consist of power fet, pwm ic and etc.

September 11, 2001 - Terrorism Reaches The United States With Deadly Consequences by Andrew Stratton
On September 11, 2001 four airliners where hijacked by terrorists and used as weapons to attack the United States. Two of the hijacked aircraft where flown by the terrorists into the "Twin Towers" of the World Trade Center in Manhattan. One was flown into the Pentagon, and the last aircraft... Radio, television, and two-way radio towers where destroyed, and local infrastructure including power, water, gas, and communications suffered major interruptions. ... Local utilities including; power, phone, gas, and water where cut off and many people were without basic services for a considerable...

Coaxial Cable - Definition and Uses for Communication by Kundan Upadhyaya
Coaxial cable is defined as two concentric wires, cylindrical in shape, separated by a dielectric of some type. One wire is the center conductor and the other is the outer conductor. A protective jacket covers these conductors. The protective jacket is then covered by an outer protective armor. ... 50 ohms cable is used in radio transmitter antenna connections, many measurement devices and in data communications (Ethernet). ... 93 Ohms cable gives low capacitance per foot. ... For maximum power handling, somewhere between 30 and 44 Ohms is the optimum.

How To Choose a Computer Mouse by Jason Kohrs
Computer Mice Every computer user can hopefully identify their mouse and the importance it plays in the daily operation of their computer. Mice are nothing new and for the most part are nothing overly complex, but the average user may not be familiar with all of the options and technologies... Wireless Connection Technologies Radio Frequency – The most common type of wireless mouse uses radio frequencies to communicate motion to a receiver that is connected to the PC. ... The Bluetooth mice are also battery powered, and use the 2.4GHz radio frequency to communicate with an included...

BlueTooth Technology by Jith Crs
Bluetooth is the name given to a new technology standard using short-range radio links, intended to replace the cable(s) connecting portable and fixed electronic devices. The standard defines a uniform structure for a wide range of devices to communicate with each other. ... Its important features of Bluetooth are robustness, low complexity, low power and low cost. ... The Bluetooth radio unit can functions even in noisy radio environments, ensuring audible voice transmissions in severe conditions.

Marine Electronics by Ken Jones
Autopilots The first self-steering gear was introduced in the 1920's to control model yachts but it was not until 1948 that the principle was applied to full scale yachts. Standing at the helm for lengthy periods, monitoring instruments and keeping a good look out can be very tiring. ... VHF Radio The power required to transmit is minimal, all sets have the option of transmitting on either 1 Watt or 25 Watts and the lower power should be used whenever possible. ... SSB Radio has a range of several thousand miles.

Laptop Battery Conditioning and Recycling Laptop Batteries by Victor Epand
New Laptop Battery Tips: This document explains how we recommend you should fully condition your new laptop battery, by using a very simple charging cycle. This will ensure a long run time from your battery and greater lifetime. It is very important that you fully cycle and 'condition' you... Nickel Cadmium (NiCd) rechargeable batteries are also common in the household, found in equipment such as power tools, camcorders, laptop computers and mobile phones (there is a separate information sheet about mobile phones).