Gallium Arsenide (GaAs) – Energy Band Structure In this article, the energy band structure of GaAs is explained with a diagram and also with respect to its comparison with Silicon. The cause of the curves in the valence band and conduction band of GaAs is thoroughly explained. Electron Mobility, a characteristic of GaAs, and its […]
Gallium Arsenide (GaAs) – Channeling Effect This article explains the channeling effect of Gallium Arsenide (GaAs), and its orientation dependency. The concept of axial channeling is also explained. Before going into details, it is better to know the basics on GaAs in VLSI technology. Click on the link below. TAKE A LOOK : ULTRA-FAST SYSTEMS
Description. This is just another 20W audio amplifier circuit , but this time based on the LM1875 audio amplifier IC from National Semiconductors. With a 25V dual power supply LM1875 can deliver 20W of audio power into a 4 ohm speaker. The LM1875 requires very less external components and has very low distortion. The IC
Gallium Arsenide (GaAs) Doping This article briefly explains the compound semiconductor Gallium Arsenide (GaAs) with a figure showing the arrangement of atoms. The Gallium Arsenide (GaAs) doping process, with respect to the p-type and n-type material is also explained with diagrams. Before going into details, it is better to know the basics on GaAs in
Description The audio amplifier shown here is based on the TDA7240 IC from ST Microelectronics. The TDA 7240 is an integrated audio amplifier IC that can deliver 20 watts of audio output power into a 4ohm load. The IC has minimum external parts count and is available in the 7 pin compact Heptawatt package. The
In this post, the origin of Gallium and Arsenic, as well as the structure and properties of the Gallium Arsenide (GaAs) crystal is explained in detail. The atomic structure of Gallium and Arsenic are explained with diagrams and also compared with Silicon. The valence configuration of Ga, As and Si is also shown. Before going
Ultra-fast Systems and GaAs VLSI Technology In this post, we will briefly review some of the limitations of silicon devices and then look at the emerging alternative for ultra-fast systems — gallium arsenide. Submicron CMOS technology Speed and smaller device dimensions are closely interrelated and we have already touched on the fact that the foreseeable
Description. Here is the circuit diagram of an excellent stereo preamplifier with tone control using the IC TDA1524 from Phillips. The IC requires very few external components, has very low noise and has a wide power supply voltage range. POTs R1 to R4 can be used for controlling the volume, balance, bass and treble respectively.
100Watt Inverter Circuit Inverter circuits are among the easiest circuits to build for newbies. Here is the circuit diagram of a simple 100-watt inverter using IC CD4047 and MOSFET IRF540. The circuit is simple low cost and can be even assembled on a veroboard. Circuit diagram Components Battery – 12V, 7Ah IC – CD4047 –
V-Groove MOS (VMOS) This article explains in detail about the structure of VMOS with diagram, its characteristics, anisotropic etching and also the applications of VMOS. To know the basics, click on the links given below. TAKE A LOOK : SHORT CHANNEL MOS STRUCTURES VMOS Structure The structure of VMOS is similar to short-channel power FET
