News tagged with amplifier
Physicists build quantum amplifier with single artificial atom
(PhysOrg.com) -- By demonstrating how a single artificial atom can be used to amplify electromagnetic waves, physicists from Japan are opening up new possibilities for quantum amplifiers, which can be used ...
May 25, 2010 |
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The Ultimate Long Distance Communication
Anyone who's vacationed in the mountains or lived on a farm knows that it's hard to get good internet access or a strong cell phone signal in a remote area. Communicating across great distances has always ...
Space & Earth / Space Exploration
Aug 19, 2009 |
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Lastest graphene research could lead to improvements in bluetooth headsets and other devices
Researchers at the UC Riverside Bourns College of Engineering have built and successfully tested an amplifier made from graphene that could lead to more efficient circuits in electronic chips, such as those ...
Nanotechnology / Nanomaterials
Oct 18, 2010 |
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Dyson Unveils His Bladeless Fan (w/ Videos)
(PhysOrg.com) -- James Dyson, inventor of the bag-less vacuum cleaners has taken his invention one step further with the unveiling of the bladeless fan. Using 'Air Multiplier' technology the bladeless fan ...
Technology / Hi Tech & Innovation
Oct 14, 2009 |
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New Amplifier Pushes the Boundary of Quantum Physics
(PhysOrg.com) -- If powerful new quantum computers are to reach their enormous potential, they will need amplifiers capable of transmitting signals so weak they consist of a single photon. In the May 6 edition ...
May 05, 2010 |
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Triple-mode transistors show potential: Researchers introduce graphene-based amplifiers
(PhysOrg.com) -- Rice University research that capitalizes on the wide-ranging capabilities of graphene could lead to circuit applications that are far more compact and versatile than what is now feasible ...
Oct 13, 2010 |
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Mayan buildings may have operated as sound projectors
(PhysOrg.com) -- A team of archaeologists from Mexico say buildings built by the Maya people could have served as projection systems and amplifiers to deliver sounds over relatively large distances.
Other Sciences / Archaeology & Fossils
Dec 21, 2010 |
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Finnish team devise nanomechanical microwave amplifier with near least possible noise generation
(PhysOrg.com) -- A team of Finnish physicists has developed a novel way to amplify a microwave signal that unlike other amplifiers, produces noise that is just barely above that which is necessary due to the ...
Dec 15, 2011 |
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New High Frequency Amplifier Harnesses Millimeter Waves in Silicon for Fast Wireless
(PhysOrg.com) -- New imaging and high capacity wireless communications systems are one step closer to reality, thanks to a millimeter wave amplifier invented at the University of California, San Diego and ...
Feb 11, 2009 |
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Space probes will be more useful with new amplifiers
Researchers at Chalmers have developed a new generation of amplifiers, which the European Space Agency (ESA) will be using throughout the world to receive signals from its space probes and satellites. ESA ...
Apr 26, 2012 |
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Giant optical gain in a rare-earth-ion-doped microstructure
Prof. Markus Pollnau and co-workers at the MESA+ Institute for Nanotechnology at the University of Twente (The Netherlands) have developed a rare-earth-ion-doped optical amplifier with performance comparable to semiconductor ...
Jan 12, 2012 |
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EU-funded project improves global data transmission
Researchers have developed two new components that could help Europe meet some of its most pressing communication challenges in optical amplifier research.
Sep 15, 2011 |
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Novel optical amplifier without the noise
Researchers in Sweden have succeeded in delivering an optical amplifier capable of amplifying light with extremely low noise. The study is published in the journal Nature Photonics.
Jul 08, 2011 |
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Swede broadcasts music from his stomach
A Swedish man broadcast music from his stomach for several hours via a mini audio system, but said he was disappointed by the sound quality.
Nov 26, 2010 |
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IMEC develops low-cost low-power 60GHz solutions in digital 45nm CMOS
At this week’s International Solid State Circuits Conference, IMEC presents a 60GHz front-end receive chain, phase-locked loop and power amplifier in 45nm digital CMOS technology. These building blocks pave ...
Feb 09, 2009 |
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Amplifier
Generally, an amplifier or simply amp, is a device for increasing the power of a signal.
In popular use, the term usually describes an electronic amplifier, in which the input "signal" is usually a voltage or a current. In audio applications, amplifiers drive the loudspeakers used in PA systems to make the human voice louder or play recorded music. Amplifiers may be classified according to the input (source) they are designed to amplify (such as a guitar amplifier, to perform with an electric guitar), the device they are intended to drive (such as a headphone amplifier), the frequency range of the signals (Audio, IF, RF, and VHF amplifiers, for example), whether they invert the signal (inverting amplifiers and non-inverting amplifiers), or the type of device used in the amplification (valve or tube amplifiers, FET amplifiers, etc.).
A related device that emphasizes conversion of signals of one type to another (for example, a light signal in photons to a DC signal in amperes) is a transducer, a transformer, or a sensor. However, none of these amplify power.
For more information about Amplifier, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
