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Transistor
A TRANSISTOR is a semiconductor device used to amplify or switch electronic signals and electrical power . It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits . The transistor is the fundamental building block of modern electronic devices , and is ubiquitous in modern electronic systems. Julius Edgar Lilienfeld patented a field-effect transistor in 1926 but it was not possible to actually construct a working device at that time
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Transistor (other)
A TRANSISTOR is a semiconductor device used to amplify and switch electronic signals and electrical power. TRANSISTOR may also refer to: MUSIC* Transistor
Transistor
(311 album) , 1997 * "Transistor" (song) , the title track by the band 311 from the album Transistor * Transistor
Transistor
(TNT album) * "Transistor," a song by Kraftwerk from the 1975 album Radio-Activity OTHER USES * Transistor
Transistor
(video game) , a 2014 video game by Supergiant GamesSEE ALSO * Transistor
Transistor
radio , a small portable radio receiver using transistor-based circuitry This disambiguation page lists articles associated with the title TRANSISTOR. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from "https://en.wikipedia.org/w/index.php?title=Transistor_(other) additional terms may apply
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Talk
TALK may refer to: * Conversation , interactive communication between two or more people * Speech , the production of a spoken language * Interaction , face to face conversations * Compulsive talking , beyond the bounds of what is considered to be a socially acceptable amount of talking * Communication<
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TO-3
In electronics, TO-3
TO-3
is a designation for a standardized metal semiconductor package used for power semiconductors, including transistors , silicon-controlled rectifiers , and, integrated circuits . TO stands for " Transistor
Transistor
Outline" and relates to a series of technical drawings produced by JEDEC
JEDEC
. The TO-3
TO-3
case has a flat surface which can be interfaced to a heatsink, normally via a thermally conductive but electrically insulating washer. TO-3
TO-3
packages usually have two leads, the case being the third connection, though devices with more leads are used. The TO-3
TO-3
case has two mounting holes, with the centers spaced 1.186 inches apart. The design originated at Motorola
Motorola
around 1955. The lead spacing was originally intended to allow plugging the device into a then-common tube socket
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TO-126
TO-126
TO-126
is a type of semiconductor package for devices with three pins, such as transistors . The package is rectangular with a hole in the middle to allow for easy mounting to a board or a heat sink . CONTENTS * 1 History and origin * 2 See also * 3 References * 4 External links HISTORY AND ORIGINThe JEDEC
JEDEC
TO-126
TO-126
descriptor is derived from the original full name for the package: Transistor
Transistor
Outline Package, Case Style 126. In the updated JEDEC
JEDEC
outline system, the package is numbered as TO-225AA. SEE ALSO * Chip carrier
Chip carrier
Chip packaging and package types listREFERENCES * ^ BD135; BD137; BD139; NPN power transistors (PDF), Philips Semiconductors, 1999, retrieved 2013-12-09 * ^ " JEDEC
JEDEC
TO-126
TO-126
package specification" (PDF)
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TO-92
The TO-92
TO-92
is a widely used style of semiconductor package mainly used for transistors . The case is often made of epoxy or plastic , and offers compact size at a very low cost. CONTENTS * 1 History and origin * 2 Construction and orientation * 3 Advantages * 4 Disadvantages * 5 Voltage and current * 6 Common transistors using a TO-92
TO-92
case * 7 Additional uses of the TO-92
TO-92
case * 8 See also * 9 References * 10 External links HISTORY AND ORIGINThe JEDEC
JEDEC
TO-92
TO-92
descriptor is derived from the original full name for the package: Transistor
Transistor
Outline Package, Case Style 92. CONSTRUCTION AND ORIENTATIONThe case is molded around the transistor elements in two parts; the face is flat, bearing a machine-printed part number. The back is semi-circularly-shaped
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Small-outline Transistor
A SMALL OUTLINE TRANSISTOR (SOT) is a small footprint, discrete surface mount transistor commonly used in consumer electronics . Many manufacturers also offer the nearly identical THIN SMALL OUTLINE TRANSISTOR (TSOT) package for use in electronic circuits where height is an important consideration. CONTENTS * 1 SOT23-3, SOT323, SOT416 * 2 SOT23-5, SOT353 * 3 SOT23-6, SOT363 * 4 SOT23-8 * 5 SOT143, SOT343 * 6 SOT490 * 7 SOT89-3 * 8 SOT89-5 * 9 SOT223 (=SOT223-4) * 10 SOT223-5 * 11 SOT223-8 * 12 See also * 13 References SOT23-3, SOT323, SOT416The SOT23-3 package is very popular and a common package for transistors, and is also used for diodes and voltage regulators
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Semiconductor Device
SEMICONDUCTOR DEVICES are electronic components that exploit the electronic properties of semiconductor materials, principally silicon , germanium , and gallium arsenide , as well as organic semiconductors . Semiconductor
Semiconductor
devices have replaced thermionic devices (vacuum tubes) in most applications. They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum. Semiconductor
Semiconductor
devices are manufactured both as single discrete devices and as _integrated circuits _ (ICs), which consist of a number—from a few (as low as two) to billions—of devices manufactured and interconnected on a single semiconductor substrate , or wafer
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Electronic Amplifier
An AMPLIFIER, ELECTRONIC AMPLIFIER or (informally) AMP is an electronic device that can increase the power of a signal (a time-varying voltage or current ). An amplifier uses electric power from a power supply to increase the amplitude of a signal. The amount of amplification provided by an amplifier is measured by its gain : the ratio of output to input. An amplifier is a circuit that can give a power gain greater than one
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Switch
In electrical engineering , a SWITCH is an electrical component that can "make" or "break" an electrical circuit , interrupting the current or diverting it from one conductor to another. The mechanism of a switch removes or restores the conducting path in a circuit when it is operated. It may be operated manually, for example, a light switch or a keyboard button, may be operated by a moving object such as a door, or may be operated by some sensing element for pressure, temperature or flow
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Electronics
ELECTRONICS is the science of controlling electrical energy electrically, in which the electrons have a fundamental role. Electronics deals with electrical circuits that involve active electrical components such as vacuum tubes , transistors , diodes , integrated circuits , optoelectronics , sensors etc. associated passive electrical components, and interconnection technologies. Commonly, electronic devices contain circuitry consisting primarily or exclusively of active semiconductors supplemented with passive elements; such a circuit is described as an electronic circuit . The science of electronics is also considered to be a branch of physics and electrical engineering . The nonlinear behaviour of active components and their ability to control electron flows makes amplification of weak signals possible, and electronics is widely used in information processing , telecommunication , and signal processing
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Electrical Power
ELECTRIC POWER is the rate, per unit time, at which electrical energy is transferred by an electric circuit . The SI unit of power is the watt , one joule per second . Electric power is usually produced by electric generators , but can also be supplied by sources such as electric batteries . It is usually supplied to businesses and homes by the electric power industry through an electric power grid . Electric power is usually sold by the kilowatt hour (3.6 MJ) which is the product of power in kilowatts multiplied by running time in hours. Electric utilities measure power using an electricity meter , which keeps a running total of the electric energy delivered to a customer. Electrical power provides a low entropy form of energy and can be carried long distances and converted into other forms of energy such as motion , light or heat with high energy efficiency
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Semiconductor
A SEMICONDUCTOR material has an electrical conductivity value falling between that of a conductor , such as copper, and an insulator , such as glass. Their resistance decreases as their temperature increases, which is behavior opposite to that of a metal. Their conducting properties may be altered in useful ways by the deliberate, controlled introduction of impurities ("doping ") into the crystal structure . Where two differently-doped regions exist in the same crystal, a semiconductor junction is created. The behavior of charge carriers which include electrons , ions and electron holes at these junctions is the basis of diodes , transistors and all modern electronics. Semiconductor
Semiconductor
devices can display a range of useful properties such as passing current more easily in one direction than the other, showing variable resistance, and sensitivity to light or heat
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Terminal (electronics)
A TERMINAL is the point at which a conductor from an electrical component , device or network comes to an end and provides a point of connection to external circuits . A terminal may simply be the end of a wire or it may be fitted with a connector or fastener. In network analysis, terminal means a point at which connections can be made to a network in theory and does not necessarily refer to any real physical object. In this context, especially in older documents, it is sometimes called a POLE. The connection may be temporary, as seen in portable equipment, may require a tool for assembly and removal, or may be a permanent electrical joint between two wires or devices. All electric cells have two terminals. The first is the positive terminal and the second is the negative terminal. The positive terminal looks like a metal cap and the negative terminal looks like a metal disc
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Voltage
VOLTAGE, ELECTRIC POTENTIAL DIFFERENCE, ELECTRIC PRESSURE or ELECTRIC TENSION (formally denoted ∆_V_ or ∆_U_, but more often simply as _V_ or _U_, for instance in the context of Ohm\'s or Kirchhoff\'s circuit laws ) is the difference in electric potential energy between two points per unit electric charge . The voltage between two points is equal to the work done per unit of charge against a static electric field to move the test charge between two points. This is measured in units of _volts _ (a joule per coulomb ). Voltage
Voltage
can be caused by static electric fields, by electric current through a magnetic field , by time-varying magnetic fields, or some combination of these three. A voltmeter can be used to measure the voltage (or potential difference) between two points in a system; often a common reference potential such as the ground of the system is used as one of the points
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Electric Current
An ELECTRIC CURRENT is a flow of electric charge . In electric circuits this charge is often carried by moving electrons in a wire . It can also be carried by ions in an electrolyte , or by both ions and electrons such as in an ionised gas (plasma ). The SI unit
SI unit
for measuring an electric current is the ampere , which is the flow of electric charge across a surface at the rate of one coulomb per second. Electric current
Electric current
is measured using a device called an ammeter . Electric currents cause