C33725 TRANSISTOR PDF

Top 10 facts about the world A BC transistor is a three-terminal current control device used for general purposes. Based on the semiconductor type used, the BC transistor is a negative-positive-negative NPN type because the main terminals use a negative N -type material. The transistor schematic for an NPN transistor indicates the emitter with an arrow pointing away from the transistor. It is known as a bipolar junction transistor because it uses a positive P -type semiconductor material sandwiched between two N-type materials.

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Adorable animal families that will make you "aww" A BC transistor is a three-terminal current control device used for general purposes. Based on the semiconductor type used, the BC transistor is a negative-positive-negative NPN type because the main terminals use a negative N -type material. The transistor schematic for an NPN transistor indicates the emitter with an arrow pointing away from the transistor.

It is known as a bipolar junction transistor because it uses a positive P -type semiconductor material sandwiched between two N-type materials. This NPN transistor has a base or the control terminal, an emitter terminal, and a collector terminal. On the base-to-emitter junction, the amount of current flow determines the collector current. The ratio of the collector current to the base current is known as beta.

If a transistor has a beta of , a current of 1 milliampere mA through the base-emitter produces a current of mA in the collector. Ad The collector-to-emitter junction of the BC transistor may act as a switch for simple DC switching operations. If a volt V relay coil requires mA to be fully energized, the mA may be produced by a 12 volts direct current VDC supply in series with the relay coil and the collector-to-emitter junction of the transistor.

Given a beta of , it takes only 1 mA at the base to produce the mA at the collector. The 1 mA may be produced at the base when a dark condition is shown on a phototransistor. This effect may be used to turn on a light bulb via a relay when the room gets dark. There are many transistor characteristics to consider when using a BC transistor. The collector to emitter voltage should be below the maximum collector voltage, and the current on the collector should not exceed the maximum collector current specified for the device.

A transistor array carries several transistors inside one package, a scheme that is very useful for designs that use several of the same transistor. In 8-bit computing, for instance, the bus drive may require eight transistors. A transistor array can help minimize total package count, which can simplify final circuit assembly.

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