Differential amplifier approach uses an operational Amplifier. Operational Amplifiers only amplify the difference between the two input lines. This method eliminates common mode noise between the incoming signals by making A-B=C, as only the difference between A & B are amplified. Operational amplifiers is maintain wide bandwidth signals throughout your system while eliminating ground loop →
The days when you can fix your own car may be coming to an end. New vehicles have complex on-board computerized systems densely packed under the hood. Mechanics face an ever climbing learning curve to keep up with advancing automotive technology. We need some technology to solve this problem. Columbia University’s Computer Graphics and User →
GUIs are fine, but to unlock the real power of Linux®, there’s no substitute for the command line. Learn Linux, 101: The Linux command line article is about getting comfortable with GNU and UNIX commands if you are not already comfortable with them. In this article, Ian Shields introduces you to some of the major →
The end of physical formats for movie and TV shows could be called digital convergence, a happy, wonderfully singular, unified digital world. Content moves seamlessly from your multifunction portable device to your TV, between your computers, and to every monitor and audio system and random networked appliance in between. This would be theoretically and technically →
New Line Techtalk Phantom Supply web page shows how to build a very simple design for a phantom supply. Now since the question was for a simple phantom supply, fed by batteries, the choice was made to use two 9V batteries (since a lot of microphones can be run from phantom voltages as low as →
See ‘Avatar,’ Diagnose Your Vision Problems web article says that 56 percent of people aged 18 to 38 have vision problems that could make it difficult to view 3-D properly. Not everyone’s eyes can perceive perceive the stereo images correctly, and then their brain can’t merge them into one image in 3-D. This can cause →
The German and French governments have warned web users to find an alternative browser to Internet Explorer to protect security. Microsoft has admitted that IE was the weak link in recent attacks on Google’s systems. That Operation Aurora attack used Chinese malware. This broad attack exploits a new, not publicly known vulnerability in Microsoft Internet →
Fiber optic microscopes are used to inspect connectors to check the quality of the termination procedure and diagnose problems. A well made connector will have a clean, smooth, polished and scratch free finish. There is not be any signs ofcracks, chips or fiber not even with the ferrule front. The magnification for viewing connectors can →
When working with fiber optics, you need some special tools to check fiber connections. Continuity checking makes certain the fibers are not broken and to trace a path of a fiber from one end to another through many connections. You can use a visible light “fiber optic tracer” or “pocket visual fault locator“. It looks →
Symbian is the world’s most popular mobile operating system, accounting for 50% of smartphone sales according to Wikipedia. The Symbian Blog posting Progress on the Symbian^3 and Symbian^4 contribution plans tells the quantity and quality of features that the community is planning for Symbian^3 mobile phone operating system. Symbian^3 is nearing Functionally Complete (expected to →