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Explosive > Transistor
The following information is about Transistor.
Transistor Defined
Transistor, an electronic device used as a voltage and current amplifier, consisting of semiconductor materials that share common physical boundaries. The material most commonly used is silicon into which impurities have been introduced. In n-type semiconductors there is an excess of free electrons, or negative charges, whereas in p-type semiconductors there is a deficiency of electrons and therefore an excess of positive charges. Transistors are used in many applications, including radio receivers, electronic computers, and automatic control instrumentation (e.g., in spaceflight and guided missiles). Since the invention (announced in 1948) of the transistor by the American physicists John Bardeen, Walter H. Brattain, and William Shockley, many types have been designed. The n-p-n junction transistor consists of two n-type semiconductors separated by a thin layer of p-type semiconductor; the three segments are called emitter, base, and collector, respectively, and are usually sealed in glass, with a wire extending from each segment to the outside, where it is connected to an electric circuit. The transistor action is such that if the electric potentials on the segments are properly determined, a small current between the emitter and base connections results in a large current between the emitter and collector connections, thus producing current and amplification. The p-n-p junction transistor, consisting of a thin layer of n-type semiconductor lying between two p-type semiconductors, works in the same manner, except that all polarities are reversed. Also Integrated Circuits; Microelectronics.
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Off-site Transistor Links, User Submitted
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Sat Jul 4
- getting closer to photonic computing: A single-molecul e optical transistor : Article : Nature
- Optical Computer Closer: Optical Transistor Made From Single Molecule: creating an optical transistor with a single molecule. For this, they have made use of the fact that a molecule?s energy is quantized: when laser light strikes a molecule that is in its ground state, the light is absorbed. As a result, the laser beam is quenched. Conversely, it is possible to release the absorbed energy again in a targeted way with a second light beam. This occurs because the beam changes the molecule?s quantum state, with the result that the light beam is amplified. This so-called stimulated emission, which Albert Einstein described over 90 years ago, also forms the basis for the principle of the laser. By using one laser beam to prepare the quantum state of a single molecule in a controlled fashion, scientists could significantly attenuate or amplify a second laser beam
Fri Jul 3
- Computer History Museum - The Silicon Engine | Welcome
- Guitar Tube Amplifiers: Why expensive tube amplifiers are better than transistor amplifiers for playing guitar
- http://www.loc .gov/rr/mss/im ages/Kilby_mic rochip.JPG: vacuum tube, transistor, microchip pics
- My Most Memorable Gadgets, By Steve Wozniak [Memorable Gadgets] | PC Hardware News: Were swimming kick off you blizzard exploring memorable gadgets from memorable generation with monad most influential polytechnic institute giants: steve
Thu Jul 2
Wed Jul 1
- GP transistor model
- Physical Computing at ITP | Tutorials / Using a transistor to control high current loads with an Arduino
- Gallium nitride - Wikipedia, the free encyclopedia
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