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VOLUME -26 NUMBER 5
Publication Date: 05/1/2011
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May 2011 Issue
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Nextreme Intros Wireless Green Power
Thermoelectric generator for remote wireless needs.
Durham, NC — Nextreme Thermal Solutions has introduced Thermobility
, calling it the next generation of power generation technology. Thermobility uses heat as a source of electricity for low-power wireless applications.
The technology uses innovative solid-state thin-film thermoelectric technology to convert heat into electricity for a variety of self-contained, autonomous systems. It uses differences in temperature to enable "wireless power" anywhere that there is an adequate heat source and eliminates the need to use traditional wired power sources or replaceable batteries.
When paired with wireless transmitters, the Thermobility solution can provide electric power for decades of maintenance-free operation, thus expanding the possibilities for new wireless sensor applications in industrial control, transportation, automotive and building management.
According to the company, advances in distributed sensors and sensor networks have led to an increased interest in the use of renewable power sources to replace or augment existing power systems. The use of heat is an attractive source of energy for many low-power sensor applications.
As the first in a series of wireless power generators, the Thermobility WPG-1 provides a constant voltage output of 3.3, 4.1 or 5.0VDC to electrical loads of 15kΩ or higher. The WPG-1 is about the size of a golf ball and consists of a pin-fin heat sink, a custom circuit board, the company's eTEG
HV56 thermoelectric power generator module and a metal attachment plate that is applied to the desired heat source. The device incorporates a Linear Technologies LTC
3108 Ultralow voltage step-up converter and power manager chip to provide up to 1mW of electrical power at temperature differentials as low as 15-20K relative to ambient. Larger temperature differences can generate significantly more power. The WPG-1 is designed for ease of use with any flat-surface heat source. For simple benchtop testing, the WPG-1 can be placed directly on a laboratory grade hotplate with temperature control. For evaluation with other surfaces, the attachment plate can be mated with either thermal grease for normal horizontal application or double-stick thermal pad for vertical mounting.
The unit's circuit board includes DIP switches for setting the output voltage. Electrical connections can be made using the on-board 2-pin or 6-pin connectors. The 6-pin connector is a Texas Instruments proprietary connector that mates to the eZ430 wireless target board, making the WPG-1 an excellent wireless power source for the eZ430 development platform.
The company plans to extend the Thermobility platform with additional features, including integrated energy storage for applications with variable heat sources. The design is flexible and can be customized for a variety of wireless power applications.
Contact: Nextreme, 3908 Patriot Dr., Suite 140, Durham, NC 27703-8031
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