MISCELLANEOUS - Electronics Articles

Beam Circularizing and Astigmatism Correction Methods for Semiconductor Laser Diodes

Introduction The most commonly used method to circularize the elliptical beam is to use a pair of anamorphic correcting prisms, as shown in Fig.1. The prisms can enlarge or reduce the beam size in one direction while keeping the beam size in ...

0 Comments. 15971 views since Sep 22, 2007

Near Field Communication Interface & Protocol-2 (NFCIP-2)

Near Field Communication Interface and Protocol-2 (NFCIP-2) Brief history In 2002, Ecma International formed Task Group 19 of Technical Committee 32 to specify Near Field Communication (NFC) signal interfaces and protocols. The NFC devi ...

0 Comments. 3420 views since Sep 10, 2008

TETRA - Terrestrial Trunked Radio

TETRA - Terrestrial Trunked Radio for Professional Cellular System TETRA, the European standard for Trunked Radio Systems, is primarily intended for users in the public security sphere, transport, utilities and operators of public Trunked Radio ...

0 Comments. 2768 views since Sep 3, 2008

Echo Sounder : Ocean Depth Measurer

Abstract Maritime safety is of paramount concern to the scores of people who make a living from the sea. To ensure their safety and to provide safe navigation for ships, the most popularly used instrument worldwide is the Echo Sounder. The Ec ...

0 Comments. 2441 views since May 13, 2008

Laser Diode to Fiber Couplers

Introduction OZ Optics offers a complete line of laser diode to fiber couplers, offering optimum coupling in a small, rugged package. They may be purchased prealigned, ...

0 Comments. 1811 views since Sep 22, 2007

IGBT or MOSFET: Make the Right Choice

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0 Comments. 1786 views since Sep 18, 2008

Direct Broadcasting Satellites

Direct Broadcast Satellite (DBS) refers to satellite television (TV) systems in which the subscribers, or end users, receive signals directly from geostationary satellite. Signals are broadcast in digital format at microwave frequencie ...

2 Comments. 1481 views since Aug 31, 2008

Dynamic Voltage Restores (DVR)

Introduction Power quality has a significant influence on high-technology equipments related to communication, advanced control, automation, precise manufacturing technique and on-line service. For example, voltage sag can have a bad influence ...

0 Comments. 1438 views since Oct 2, 2008

Getting Started With Electronics Part 1

Introduction Most all electronics components generate, store, control or switch electricity in some way. A circuit is made of various components that act together to produce a desired effect. There is a lot to learn about electronics and you ...

0 Comments. 1418 views since Sep 11, 2007

Fiber Optics : Laser Diode

Introduction Fiber Optics is the branch of Science (especially - Optical Physics) in which we studied about the Optical Fiber and its Communication i.e. Optical Fiber Communication. Light emitters are a key element in any fiber optics system. ...

0 Comments. 1414 views since Sep 22, 2007

CAN Bus Controller

Intorduction After being around for 15 years, CAN (Controller Area Network) did not yet reach the peak of its lifetime. The number of CAN nodes sold and installed still rises year by year and currently exceeds the number of 200 million new node ...

0 Comments. 1406 views since Sep 16, 2008

Wireless and Radio Transmission

Wireless Transmission Wireless technology that is used in small computing devices and mobile communications devices is the same radio technology Guglielmo Marconi used to provide an alternative communication means to the telegraph and the tel ...

0 Comments. 1383 views since May 12, 2008

White LED

LED stands for Light Emitting Diode. An LED is a semiconductor chip that converts electrical energy into light. The conversion of energy into light happens on the quantum level within the molecular makeup of the semiconductor chip. The process begins w ...

0 Comments. 1378 views since Apr 24, 2008

Near Field Communication (NFC)

About The current state of the consumer electronics can be characterized by moving from a single purpose device to a multifunctional device and by moving from isolated devices to a networked device. In this last respect, it is important that p ...

0 Comments. 1361 views since Sep 10, 2008

Getting Started With Electronics Part 2

Transistors Transistors are semiconductor devices with three leads. For those that don't know &quot;leads&quot; simply refer to the pins or wires coming from a device or component. A very small current or voltage at one lead can control a muc ...

0 Comments. 1360 views since Sep 11, 2007

Introduction to VHDL

Introduction VHDL is a Hardware Description Language for describing digital system . VHDL a programming language, stands for VHSIC Hardware Description Language. VHSIC is an abbreviation for Very High Speed Integrated Circuit. It can d ...

0 Comments. 1328 views since Oct 22, 2007

Applications of NFC

Applications of NFC NFC can be used in a number of ways. Some of the most compelling applications are outlined below. Ticketing and Payment Many major cities around the world use contactless payment systems within the transport in ...

0 Comments. 1065 views since Sep 10, 2008

Review of Wireless Technologies

Wireless isn't the black art that many think it is, but it's still a complex process affected by a broad range of variables. Before you select a wireless technology to support a real-time location system (RTLS) in an industrial setting, make sure you k ...

0 Comments. 1061 views since Sep 30, 2008

Fingerprinting: Put Cybercriminals under your thumb

Since the day Brandon Mayfield, a lawyer from Portland, Oregon, was released from federal custody after a fingerprint had linked him to this year’s Madrid terror bombings, ...

0 Comments. 966 views since Sep 18, 2008

Soldering Techniques

The most fundamental skill needed to assemble any electronic project is that of soldering. It takes some practice to make the perfect joint, but, like riding a bicycle, once learned is never forgotten! The idea is simple: to join electrical parts toget ...

0 Comments. 953 views since Sep 26, 2008

Measuring Instrument: Meter

A meter is any device built to accurately detect and display an electrical quantity in a form readable by a human being. Usually this "readable form" is visual: motion of a pointer on a scale, a series of lights arranged to form a "bargraph," or some s ...

0 Comments. 938 views since Sep 26, 2008

Basics of Radio Systems

Introduction Automation and process engineers increasingly need an understanding of radio basics to properly harness the many wireless automation products now coming on the market. Fortunately, new generations of wireless products are easier to ...

0 Comments. 925 views since Sep 22, 2008

Inductors

Whenever electrons flow through a conductor, a magnetic field will develop around that conductor. This effect is called electromagnetism. Magnetic fields effect the alignment of electrons in an atom, and can cause physical force to develop between atom ...

0 Comments. 921 views since Sep 26, 2008

STA013 and STA015 MP3 decoders

The "STA013" and "STA015" integrated circuits by STMicroelectronics are flexible MP3 decoders with good performance. The STA015 is almost fully backwards compatible with the STA013, so this article will focus on the STA013 and mention differences with ...

0 Comments. 911 views since Sep 16, 2008

Difference between LCD and PLASMA TV

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0 Comments. 880 views since Aug 16, 2008

Inductors & Calculus

Inductors do not have a stable "resistance" as conductors do. However, there is a definite mathematical relationship between voltage and current for an inductor, as follows: "Ohms law" for an Inductor   v = L ...

0 Comments. 820 views since Sep 26, 2008

Cognitive Radio : A Brief Introduction

Today’s wireless networks are characterized by a fixed spectrum assignment policy. However,a large portion of the assigned spectrum is used sporadically and geographical variations in the utilization of assigned spectrum ranges from 15% to 85% witha ...

0 Comments. 784 views since Sep 22, 2008

Semicondutor Wafer Fabrication

Overview of SemiconductorFabrication Technology BasicProcesses:   WaferGrowth: Creation of single - crystal substrate material   Photolithography: Definition of regions (through a mask) o ...

0 Comments. 765 views since Aug 14, 2008

Optical Data Communication

A modern alternative to sending (binary) digital information via electric voltage signals is to use optical (light) signals. Electrical signals from digital circuits (high/low voltages) may be converted into discrete optical signals (light or no light) ...

0 Comments. 743 views since Oct 1, 2008

Telephone Circuits

When a new computer modem enters the household, the demands on the home phone line skyrockets. The Internet surfer can use phone time on a par with the most talkative teenager. And the computer modem user c ...

0 Comments. 673 views since Oct 1, 2008

We are the source and suppliers of original Konica Minolta Imaging products. Extinguish your imaging

Konica Minolta copiers work best when you use trademark Konica imaging units, toner cartridges and other accessories. ...

0 Comments. 568 views since Jan 6, 2011