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Results for emitter
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(computer science) A time pulse generator found in some equipment, such as a card punch.
(electronics) A transistor region from which charge carriers that are minority carriers in the base are injected into the base, thus controlling the current flowing through the collector; corresponds to the cathode of an electron tube. Symbolized E. Also known as emitter region.
The semiconductor region from which charge carriers are injected into the base of a bipolar junction transistor.
The noun has one meaning:
Meaning #1:
the electrode in a transistor where electrons originate
An emitter is a device used to emit any signal, beacon, light, odor, liquid, fragrance, or any other type of signal. It is also called a dripper and is a device used in drip irrigation.
An emitter is also called a dripper and is a device used in drip irrigation. It is used to transfer water from a pipe or tube to the area that is to be irrigated. Typical emitter flow rates are from 0.16 to 4.0 US gallons per hour (0.6 to 16 L/h). In many emitters, flow will vary with pressure, while some emitters are pressure compensating. These emitters employ silicone diaphragms or other means to allow them to maintain a near-constant flow over a range of pressures, for example from 10 to 50 psi (70 to 350 kPa).
Some of the more notable manufacturers of emitter are:
In vacuum tube technology, the emitter is another name for the cathode, which emits electrons through thermionic emission or field emission.
In transistor technology, the emitter is the analog of the vacuum tube cathode, though the current flow through it may be either positive or negative, depending on the type of transistor.
An emitter may refer to an infrared LED used to emulate a remote control. It emitter can also be wired into the integrated receiver/decoder of a satellite TV unit, so that it can operate a VCR to record a TV show when selected from the program guide. The wired emitter is stuck with an adhesive to the front of the VCR, and mimics the signals of the remote, eliminating the need to set the VCR separately.
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 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
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| Computer Desktop Encyclopedia. THIS COPYRIGHTED DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher. © 1981-2008 Computer Language Company Inc. All rights reserved. Read more |
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| Electronics Dictionary. Copyright 2001 by Twysted Pair. All rights reserved. Read more |
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| WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Emitter". Read more |
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