BC368,126

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The BC368,126 is a single, bipolar junction transistor (BJT) that is generally used in circuits where amplification is required, such as audio amplifiers, power supplies, and other general-purpose applications. The BC368,126 is composed of three terminals the collector (C), the emitter (E), and the base (B). This type of transistor is referred to as a junction transistor because the current is driven from one "junction" between semiconductor materials to the other. Below we explain the basic design, field applications and operating principles, of the BC368,126.

Design

The BC368,126 consists of a single layer of semiconductor material, typically silicon (Si). Silicon is ideal for BJTs because it has four valence electrons that allow it to easily form covalent bonds with other elements. In general, these bonds are formed with boron and phosphorus, which have three and five valence electrons respectively. These elements, each in its own "zone", form "p-n junctions" that exist between each type of material.

The base zone is composed of boron, and the collector is composed of phosphorus. The emitter zone is made up of both boron and phosphorus, with the proportion of boron to phosphorus varying depending on the type of transistor being used. This structure forms a three-layer sandwich, with the base zone as the middle layer and the collector and emitter zones on either side.

Application Field

A BC368,126 can be used in a variety of electronic circuits, most notably audio amplifiers, power supplies, and other general-purpose applications. By connecting an external voltage source to the emitter, electrons can flow from the emitter to the base and then to the collector. This is called forward-biasing and is used to open the small "gate" (made up of the base-collector junction) and allow a larger flow of current through the transistor.

The amount of current that flows is determined by the amount of voltage applied to the base, which is called the base voltage. By adjusting the base voltage, you can adjust the amount of current flowing through the transistor, which is called the collector current. This is useful for controlling the output of an amplifier or other circuit, as the collector current can be used to represent an analog (or digital) signal.

Working Principle

The working principle behind the BC368,126 is based on the movement of charge carriers (electrons and holes) in the semiconductor material. The N-type semiconductor material has a majority of electrons, while the P-type semiconductor material has a majority of holes. When a voltage is applied to the emitter, it pushes the electrons across the base region, forming a layer of charge carriers that then attracts electrons to the collector region. This creates a charge difference, which then causes a current to flow through the transistor.

There are two main types of operation modes for the BC368,126, which are active and saturation. In active mode, the current flow is limited by the size of the base-collector junction, while in saturation mode the current flow is limited by the amount of voltage applied to the base. This can be used to control the output of an amplifier or other circuit, allowing for precise control of the output signal.

In conclusion, the BC368,126 is a single, bipolar junction transistor (BJT) that is used in a variety of applications, such as audio amplifiers, power supplies, and other general-purpose circuits. It works by adjusting the base voltage to control the collector current, which is used to represent an analog (or digital) signal. The BC368,126 is composed of three terminals, the collector (C), the emitter (E) and the base (B), and is made up of a three-layer sandwich of semiconductor material, typically silicon.

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