Posts Tagged ‘electrical signals’
June 13th, 2009 | 
Author: Have you begun to notice an increase in the frequency and distribution of crimes being committed against individuals?
You will soon come to know of an extremely effective and affordable means of enhancing your safety.
A review of the sales literature will show there is an increase in the sales of stun guns. More and more people are seeking personal solutions to enhancing self and family protection without the use of handguns.
When it comes to personal self-defense, stun guns are becoming more and more popular. When compared to a conventional handgun, the stun gun could be considered a merciful alternative to employ during a situation that requires a self-defense solution.
Stun guns immediately, yet temporarily, disrupt the electrical signals transmitted from the brain to the muscles, thereby incapacitating an attacker while simultaneously not causing any lasting harm. It’s the combination of the high-voltage and the low-amp electrical charge that enables the gun to penetrate clothing, knock an assailant down and disorient him, without causing permanent damage to the body.
Hopefully, you will never be in an attack situation. If you are, however, your goal is to survive and get away, right?
Looking into the mind of an attacker we see a dangerous, yet scared, individual who uses both surprise and fear to assault others. These cowards, if you will, rarely expect their ‘victims” to respond in an effective self-defensive manner.
In fact, just having a useful, legal weapon like a stun gun, imbues one with a certain and noticeable confidence that, in many cases, signals a criminal that you are not any easy ‘mark’, so the criminal may decide to pass you by. On the other hand, if you are attacked, you can use your stun gun to stop the attack, render your assailant helpless, and make your getaway.
Stun guns have a simple mode of operation that’s based on the electrical design of the human body. The body is naturally susceptible to electrical shocks. The stun gun operates in a manner that, when activated, blocks communication between brain and muscle, thereby rendering the recipient of the stun helpless and incapable of continuing an attack.
Stun guns are battery operated, which adds to their convenience of use. Stun guns have been know to prevent an attack in that once a potential assailant sees that you have one and hears the crackling sound and sees the spark it emits he sometimes changes his mind regarding pursuing you as a victim.
If he doesn’t run, simply apply the stun gun to him, anywhere on the clothing or body. The stun gun charge will confuse, disorient and paralyze the assailant, leaving him weak and unable to control his own muscles.
Stun guns range in strengths from 100,000 – 750,000 volts. Furthermore, they are designed in different sizes and, they come in straight or curved versions.
So, if you are seeking an affordable and legal (by all means, check your state law regarding the possession and use of stun guns) method of enhancing your personal and family safety, consider stun guns: the safe and humane alternative to handguns.
Idriys “Luke” Muhammad, MHS – http://Personal-Safety-Products.com
Idriys Muhammad has worked as a consultant in the safety and security industry. If personal safety and security for your family is important to you, please invest some time and visit our site and become part of a select group of smart individuals who are committed to personal and family safety.
Article Source: http://EzineArticles.com/?expert=Idriys_L._Muhammad
Article Source: Personal Protection Devices – Stun Guns
All types of liquids, powders, pellets, slurries and other materials are handled in a wide variety of different types of cans, buckets, pails, drums, tanks and other types of containers. Traditionally, these have been filled by hand. Liquids are often dispensed by a manually operated pump or gravity fed valve. Other types of materials may also be gravity fed, or filled by use of a conveyor or other type of device. In all of these cases, the accuracy of filling is dependent on the operator. Of course, it is also labor intensive, as the operator is needed at all times to monitor the filling process.
Industrial scales are perfect for monitoring the filling process. A bench scale is used to keep track of the weight during the filling process for smaller sized cans, pails and other containers. A drum scale will serve this purpose for drums and small tanks, whereas a platform scale or floor scale can handle larger dewars and larger tanks. While this will solve the accuracy issue, it still requires the filling operator to read the scale and control the filling process.
Arlyn Scales offers a programmable setpoint controller for their entire line of bench scales, drum scales, platform scales and floor scales. This allows the filling operator to program the desired weight into the industrial scale. Electrical signals from the scale will control the filling device, shutting it off when the target weight is reached. While this minimizes the efforts required of the fill operator, there may still be some inaccuracies caused by latent delay in turning off pumps, and valves, and the material remaining in fill pipes or tubes. This controller permits a second target value to be programmed, which can set the filling into a much slower trickle feed. Generally, this will be sufficient to obtain the desired target weights.
Click here to read the rest of Digital Scales and Automatic Filling. If you enjoyed this article, you also might like our other stories about Industrial Scales .
Article Source: Use Digital Scales to Control Automatic Filling
Television sets or television is an invention of several scientists whose discoveries date back to 1831 when Joseph Henry and Michael Faraday discovered electromagnetism. Since that time, many scientists went through painstaking work to design a device that can produce both audio and visual images. The “tube” as we call them today, is a telecommunication device used to display electronic images transmitted by a television channel through radio waves. The term television comes from the Greek word “tele” meaning far, and Latin word “visio-n”, meaning sight.
Television sets has become part of modern living since its inception around the 1940’s. In the United States, around 98 subscribe to cable television. Aside from its entertainment purposes, television sets have become educational tools, as well as advertising media. The average American household watches television seven hours a day.
Television sets images are actually the end result of a three way communication process. From a source (say, television stations), broadcast elements travel through waves and then received by television sets’ transmitters. That’s how images are produced. Television images are composed of 525 horizontal lines shown on a screen.
Television sets elements
Television sets need to have a display device that converts electrical signals into light to form images. A sound device converts electrical signals into sound that goes along the images reproduced on the display device; built-in speakers make these converted sounds heard. A television receiver picks up broadcast signals from a television source while a transmitter is responsible in modulating image and sound information television signals.
Television sets technology
From black and white screens, to colored television screens, manufacturers recently produced wide screen television sets with theater quality. Although they are almost 10 times more expensive than the old colored screens, manufacturers claim the highest resolution and unprecedented image quality. Wide television screens begin at 27″ up to 60″. New technology television sets have four types: plasma, LCD, and rear projection CRT.
Plasma television sets cost around $1000-$4000. These TVs are digital with high resolutions. LCD TVs are similar to a screen of a laptop. They are much thinner (about an inch) than plasmas and screen sizes are limited to 40″ only.
Rear Projection CRTs have screen sizes 40″ or more. Rear projection CRTs are like a combination of a projector and screen into a TV set. They are relatively cheaper compared with other wide screen television sets but consumers would have to contend with the bulkiness of rear projection CRTs.
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Article Source: The Wonders of Television Sets
When realizing the term data acquisition (DAC) it’s important to first know what is being acquisitioned: real world data. And real world data translates directly into the life sciences.
Life science, or biology, is a discipline of science that has, for hundreds of years, formed opinions of scientists, doctors, and thinkers alike. Theories and medications have been created with the study of life science, just as crimes have been solved, and organisms understood. The basic way living organisms interact with one another and their surroundings, how these organisms are structured, how they grow, what their origin may be, and their general evolution, is more or less what the term ‘life science’ encapsulates.
Real world data gets manipulated by a computer, where its signals and waveforms are processed, extracting critical information and storing it digitally in a computer processed machine. The data gets measured by components of data acquisition systems where sensors convert measurements and electrical signals before a computer manipulates the data and its signals and waveforms are processed. Critical information is then obtained and stored digitally in a computer processor, completing the first and second steps of the data acquisition process.
After life science has been converted to wavelength data, it is recorded by a data logger. Data logging is an electronic device that collects data over time, or in a specific radius, and is collected by one of three means, which include: built in instruments and sensors, or external instruments and sensors. After said data is collected, manipulated, and transformed, useful information is highlighted to suggest different types of scientific conclusions.
This process, seemingly lengthy, has allowed many growths in scientific understanding and continues on a number of levels to produce further understanding of organisms, and their relationship to the world at large.
For more information on data acquisition and data acquisition systems, please visit Biopac.com
Article Source: Data Acquisition