Direct Current(DC) Notes

Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams.

 The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for direct current was galvanic current.

DC subject Notes:

https://www.dropbox.com/s/4jp069l2gxsrgm0/DC%20lecture%20by%20hafiz%20constant

and
https://www.dropbox.com/s/rh0mc5pro5tdsxo/DC%20by%20hafiz%20constant

Engineering Drawing Or ED Notes

An engineering drawing, a type of technical drawing, is used to fully and clearly define requirements for engineered items.

Engineering drawings: common features:

 Drawings convey the following critical information:

• Geometry – the shape of the object; represented as views; how the object will look when it is viewed from various angles, such as front, top, side, etc.
• Dimensions – the size of the object is captured in accepted units.
• tolerances – the allowable variations for each dimension.
• Material – represents what the item is made of.
• Finish – specifies the surface quality of the item, functional or cosmetic. For example, a mass-marketed product usually requires a much higher surface quality than, say, a component that goes inside industrial machinery.

Line styles and types

A variety of line styles graphically represent physical objects. Types of lines include the following:

• visible – are continuous lines used to depict edges directly visible from a particular angle.
• hidden – are short-dashed lines that may be used to represent edges that are not directly visible.
• center – are alternately long- and short-dashed lines that may be used to represent the axes of circular features.
• cutting plane – are thin, medium-dashed lines, or thick alternately long- and double short-dashed that may be used to define sections for section views.
• section – are thin lines in a pattern (pattern determined by the material being "cut" or "sectioned") used to indicate surfaces in section views resulting from "cutting." Section lines are commonly referred to as "cross-hatching."
• phantom - (not shown) are alternately long- and double short-dashed thin lines used to represent a feature or component that is not part of the specified part or assembly. E.g. billet ends that may be used for testing, or the machined product that is the focus of a tooling drawing.

 More information http://en.wikipedia.org/wiki/Engineering_drawing#Engineering_drawings:_common_features

Engineering drawing Notes Link

https://www.dropbox.com/s/37zu215ulwt70h4/Ed.rar

Computer aided design or CAD Notes

Computer-aided design (CAD) is the use of computer systems to assist in the creation, modification, analysis, or optimization of a design.

CAD software is used to increase the productivity of the designer, improve the quality of design, improve communications through documentation, and to create a database for manufacturing.


Most of the engineering university offered CAD subject,for this course you needs a AUTO CAD software.



For CAD Notes open this link and then download rar file......

https://www.dropbox.com/s/vysfi5uh3p6d378/cad.rar

I will upload all my notes one by one for following subjects:

  Electrical Engineering & some pure subjects

   1.       Programming Language 1(C Programming)

   2.       English 1(English reading and public speaking)

   3.       Math 1 (Differential Calculus and Co-ordinate Geometry)

   4.        Chemistry

   5.       Chemistry Lab

   6.       Physics 1

   7.       Physics 1 Lab.

   8.       Electrical Circuits 1 (DC)

   9.       Electrical Circuits 1 (DC) Lab

   10.   Programming Language 2

   11.   Math 2 (Integral Calculus and Ordinary Differential Calculus)

   12.   Basic Mechanical Engineering

   13.   Physics 2

   14.   Physics 2 Lab.

   15.   Math 3 (Complex Variable, Laplace Transforms and Z-Transforms)

   16.   Modern Physics

   17.   English 2(written English)

   18.   Electrical Circuits 2 (AC)

   19.   Electrical Circuits 2 (AC) Lab

   20.   Electronic Devices

   21.   Electronic Devices Lab

   22.   Computer Aided Design & Electrical Drafting

   23.   Math 4 (Matrix, Vectors, Fourier Analysis)

   24.   Digital Logic Design

   25.   Digital Logic Design Lab

   26.   Electrical Machines 1

   27.   Electrical Machines 1 Lab

   28.   Analog Electronics 1

   29.   Analog Electronics 1 Lab

   30.   Principles of Accounting

   31.   Mathematical Methods of Engineering

  32.   Statistics and Probability

  33.   Digital Electronics

  34.   Digital Electronics Lab

  35.   Electrical Power Transmission and Distribution

  36.   Electromagnetic Fields and Waves

  37.   Principles of Economics

  38.   Signals and Linear Systems

  39.   Analog Electronics 2

  40.   Analog Electronics 2 Lab

  41.   Digital Signal Processing

  42.   Electrical Machines 2

  43.   Electrical Machines 2 Lab

  44.   Electronics Shop (Electronic Appliances Laboratory)

  45.   Engineering Management

  46.   Business Communication

  47.   Telecommunications Engineering

  48.   Telecommunications Engineering Lab

  49.   Control Systems

  50.   Control Systems Lab

  51.   Electrical Properties of Materials

  52.   Power System Analysis

  53.   Project and Thesis

  54.   Industrial Electronics and Drives

  55.   Industrial Electronics Lab

  56.   VLSI Circuit Design

  57.   Power Stations and Substations

  58.   Microprocessor and I.O. System

  59.   Digital Design with System Verilog, VHDL and FPGAS

  60.   Computer Interface Design

  61.   Renewable Energy Technology

  62.   Biomedical Instrumentation, Measurement and Design

  63.   Power System Protection

  64.   Electrical and Electronic Engineering Services for Buildings

  65.   Cellular Mobile Communications

  66.   Optoelectronic Devices

  67.   Computer System Architecture

  68.   VHDL Modeling and Logic Synthesis

  69.   Microwave Engineering

  70.   Measurement and Instrumentation

                             ……………   Randomly will be uploaded……………….

                                                      Haf!z

About Me

This is Hafiz...The Hafiz Constant.I was born in February 6, 1990.I am staying in Heaven.Now I'm in my 3rd year of BSc study in EEE at AIUB.I love music & movie.I am particularly interested in applying ideas from computer science,Film,Electric & Electronics.