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Beginners Guide: How To Install / Remove an Intel Socket LGA2011 CPU

Fingers and Table Saw Blades - Ouch! - PCstats.com Fingers and Table Saw Blades - Ouch!
Wed, March 24 2004 | 5:47PM | PermaLink Feedback?
The SawStop system works by recognizing the difference in the electrical properties of wood and a user. The system induces a high-frequency electrical signal on the blade of a table saw and monitors this signal for changes caused by contact between the blade and a user's body. The signal remains unchanged when the blade cuts wood because of the relatively small inherent electrical capacitance and conductivity of wood. However, when a user contacts the blade while the saw is operating, the electrical signal changes because of the relatively large inherent capacitance of the user's body. The SawStop system detects this change in the electrical signal and immediately forces a brake into the teeth of the blade. The brake absorbs the energy of the blade, bringing the blade to a complete stop in approximately 5 milliseconds. To see high-speed, close-up videos of the SawStop system stopping the blade of a table saw, click on the links to the right. In the videos, the saw blade is rotating at 4000 rpm. The blade is stopped in less than 5 milliseconds. It can make the difference between needing a Band-Aid or a hand surgeon.
FULL STORY @ Archived from SAWSTOP
http://www.sawstop.com/video.htm
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