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Archive for the ‘Active Components’ category

Tube Devices

11 September 2013 - Active Components, Basic Electronics - Hypsine Electronics - No Comments

In electronics, a vacuum tube, electron tube (in North America), tube, or thermionic valve or valve (in British English) is a device controlling electric current through a vacuum in a sealed container. The container is often thin transparent glass in a roughly cylindrical shape. The simplest vacuum tube, the diode, is similar to an incandescent […]

About Transistor

11 September 2013 - Active Components, Basic Electronics - Hypsine Electronics - No Comments

The transistor is an arrangement of semiconductor materials that share common physical boundaries. Materials most commonly used are silicon, gallium-arsenide, and germanium, into which impurities have been introduced by a process called “doping.” In n -type semiconductors the impurities or dopants result in an excess of electrons, or negative charges; in p -type semiconductors the dopants […]

TRANSISTORS

11 September 2013 - Active Components, Basic Electronics - Hypsine Electronics - No Comments

A bipolar (junction) transistor (BJT) is a three-terminal electronic device constructed of doped semiconductor material and may be used in amplyfing or switching applications. Bipolar transistors are so named because their operation involves both electrons and holes. Charge flow in a BJT is due to bidirectional diffusion of charge carriers across a junction between two regions of different charge concentrations. This mode of operation […]