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UJT Circuit Diagram

UJT Circuit Diagram: UJT Circuit Diagram Operation : The Unijunction transistor (UJT) consists of a bar of lightly-doped n-type silicon with a block of p-type material on one side, [see…

Silicon Controlled Rectifier Principle Operation

Silicon Controlled Rectifier Principle Operation: Silicon Controlled Rectifier Principle Operation (SCR) consists of four layers of semiconductor material, alternately p-type and n-type as illustrated in Fig. 19-1(a). Because of its…

IC Fabrication Articles

IC Fabrication Articles: Processing of Semiconductor Materials: Preparation of Silicon and Germanium – Silicon is one of the commonest elements on earth. It occurs as silicon dioxide (SiO2) and as…

Bipolar Junction Transistors Articles

Bipolar Junction Transistors Articles: Transistor Operation: pnp and npn Transistor Operation – A junction transistor is simply a sandwich of one type of semiconductor material (p-type or n-type) between two…

MOSFET Construction and Characteristics

MOSFET Construction and Characteristics: Figure 9-28 shows the MOSFET Construction and Characteristics of a metal oxide semiconductor FET (MOSFET), also known as an insulated gate FET. Starting with a high-resistive…

Integrated Circuit Components

Integrated Circuit Components: The Integrated Circuit Components are namely, Transistors and Diodes: The epitaxial planar diffusion process described already is normally employed for the manufacture of IC transistors and diodes. Collector,…

Transistor Models and Parameters

Transistor Models and Parameters: T-Equivalent Circuit - Because a transistor consists of two pn-junctions with a common centre block, it should be possible to use two pn-junction ac equivalent circuits…

Transistor Operation

Transistor Operation: pnp and npn Transistor Operation - A junction transistor is simply a sandwich of one type of semiconductor material (p-type or n-type) between two layers of the opposite type.…