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Let’s learn a little more about the PNP and NPN transistors. The PNP and NPN have similar functions but vary based on power supply polarity and biasing. The Bipolar Junction Transistor has two types i.e. Compared to other terminals, the collector is large in size and at times starts generating less heat for the operation’s working. The function of the base as a lightly doped terminal is to make way for the emitter-injected electrons to the collector, whereas the collector grabs the electrons from the base as the collector has moderately doped properties. The function of the emitter is to emit the electrons to the base as the emitter has a highly doped terminal. Transistorīasically, the Transistor has three terminals, i.e., base, emitter, and collector. When it comes to learning about transistors, it is referred to as the Bipolar Junction Transistors. It has two PN junctions sandwiched with a middle layer.

The BJT consists of two junction semiconductor devices, three layers and three terminals.

The first one is Bipolar Junction Transistors (BJT), and the second is Field Effect Transistors (FETS). Transistor has two specific families to deal with. This article explains the operation of the transistor in the circuit and its usages. Transistor is one of the finest devices to study and understand. Transistors are used both in analog and digital domains with diverse applications such as amplifier circuits, voltage regulators, digital logic circuits, oscillator circuits, embedded systems, power supply circuits, and control systems. The operating modes of a transistor are active, saturation, and cut-off mode. Transistors consist of three layers and have three semiconductor terminal devices used for Amplification and Switching operation. The Transistor as a Switch is the genesis of many digital circuits.

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