Elektor Electronics - July/August 2012

"Elektor Electronics" - a popular magazine on electronic components and circuitry. On a magazine site it is possible to find additional materials to articles (insertions of controllers, drawings of printed-circuit boards). 

Format : PDF 

Language : English 

Dated :  July/August 2012 
Number of pages :  148 pages 
Size :  17.9 MB

RoboCup 2012

RoboCup objective:
It is our intentions to use RoboCup as a vehicle to promote robotics and AI research, by offering publicly appealing, but formidable challenge. 
One of the effective ways to promote engineering research, apart from specific application developments, is to set a significant long term goal. 
When the accomplishment of such a goal has significant social impact, it is called the grand challenge project. 
Building a robot to play soccer game itself do not generate significant social and economic impact, but the accomplishment will certainly considered as a major achievement of the field. 
We call this kind of project as a landmark project. 
RoboCup is a landmark project as well as a standard problem.

The Dream:
We proposed that the ultimate goal of the RoboCup Initiative to be stated as follows:
By mid-21st century, a team of fully autonomous humanoid robot soccer players shall win the soccer game, comply with the official rule of the FIFA, against the winner of the most recent World Cup.
We propose that this goal to be the one of the grand challenges shared by robotics and AI community for next 50 years.

PCB Design Tutorial

You've designed your circuit, perhaps even bread boarded a working prototype, and now it's time to turn it into a
nice Printed Circuit Board (PCB) design. For some designers, the PCB design will be a natural and easy
extension of the design process. But for many others the process of designing and laying out a PCB can be a
very daunting task. There are even very experienced circuit designers who know very little about PCB design,
and as such leave it up to the "expert" specialist PCB designers. Many companies even have their own
dedicated PCB design departments. This is not surprising, considering that it often takes a great deal of
knowledge and talent to position hundreds of components and thousands of tracks into an intricate (some say
artistic) design that meets a whole host of physical and electrical requirements. Proper PCB design is very often
an integral part of a design. In many designs (high speed digital, low level analog and RF to name a few) the
PCB layout may make or break the operation and electrical performance of the design. It must be remembered
that PCB traces have resistance, inductance, and capacitance, just like your circuit does.

This article is presented to hopefully take some of the mystery out of PCB design. It gives some advice and
“rules of thumb” on how to design and lay out your PCBs in a professional manner. It is, however, quite difficult to
try and “teach” PCB design. There are many basic rules and good practices to follow, but apart from that PCB
design is a highly creative and individual process. It is like trying to teach someone how to paint a picture.
Everyone will have their own unique style, while some people may have no creative flair at all!

Indeed, many PCB designers like to think of PCB layouts as works of art, to be admired for their beauty and
elegance. “If it looks good, it’ll work good.” is an old catch phrase.

Lets have a go shall we...

Size : 384 KB
Format : PDF
| English | 2004 | 25 pages | 

Electric Motors And Control Systems

  This book has been written for a course of study that will introduce the reader to a broad range of motor types and control systems.
  It provides an overview of electric motor operation, selection, installation, control and maintenance.
  Every effort has been made in this first edition text to present the most up-to-date information which reflects the current needs of the industry.
  The broad based approach taken makes this text viable for a variety of motors and control systems courses.
Content is suitable for colleges, technical institutions, vocational/technical schools as well as apprenticeship and journeymen training.
  Electrical apprentices and journeymen will find this book to be invaluable due to Electrical Code references applicable to the installation of new control systems and motors, as well as information on maintenance and troubleshooting techniques.
  Personnel involved in the motor maintenance and repair will find this book to be a useful reference text. The text is comprehensive! It includes coverage of how motors operate in conjunction with their associated control circuitry.
  Both older and newer motor technologies are examined.
 Topics covered range from motor types and controls to installing and maintaining conventional controllers, electronic motor drives and programmable logic controllers.

Size : 95 MB
Format : PDF
| English | 2011 | 296 pages | 


كتاب 28 حرف نسخة اصلية

" 28 حرف "

قال حلمي عن سبب تسميت كتابه بـ 28 حرفا ، إنه عند انتهائه من الكتاب كان محتارا في تسميته ، وجاء في ذهنه أن أفضل اسم له هو 28 حرفا ، لأن ذلك هو عدد الحروف الأبجدية ، ولا يمكن أن يخرج أي اسم أو عنوان عن هذه الأحرف .
وأضاف أن الكتاب عبارة عن مجموعة من المقالات التي قام بكتابتها منذ عام 2009 حتى عام 2010، و من ضمن هذه المقالات مقالة تحكي قصة حياته عندما تمنى العيش في القاهرة بعدما كان يعيش في " بنها " .
وأكد أحمد حلمي أنه حتى الآن لم يقرر الخوض في كتابة كتب أخرى ، وكل ذلك يرجع إلى رد فعل الجمهور على
كتابه الحالي .

و أوضح أنه سعيد عندما شهد هذا الكم الكبير من الجمهور ، وأنه كان غير متوقع لذلك .
و أهدى حلمي أول كتاب له إلى روح والده ، و كتب في مقدمته أبى . . أين أنت ؟ هل تراني كما أراك دوما في منامي ؟ رحمك الله

Size : 30 MB
Format : PDF

لتحميل مشغل الكتب الـ PDF

برنامج الدوائر التفاعلية ( Circuit Wizard ) متميز ورائع

Circuit Wizard  برنامج الدوائر التفاعلية
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سهل الاستخدام ومهم لكل فني ومنهدس