Showing posts with label electrical engineering. Show all posts
Showing posts with label electrical engineering. Show all posts

Wednesday, November 19, 2014

In , , by // 12:08 AM // 1 comment

download pspice student version 9.1/9.2 for win xp/7/8

download pspice student version 9.1/9.2  for win xp/7/8

pspice student version download free
pspice 9.1
 FOR DOWNLINK GOTO DOWN AND TO DOWNLOAD LIBRARIES
AUTHOR/OWNER: CADENCE

WEBSITE: www.orcad.com / www.cadencepcb.com/

copyright/license: free

FILE SIZE: 27.8MB
DESCRIPTION:

What's included with the Student Version

Limited versions of the following products are included in the Student Version of PSpice:

  • PSpice A/D 9.1, Web Update 1, including PSpice Schematics 9.1
  • Your choice of schematic editors (specify during installation)
    • PSpice Schematics 9.1
    • Capture 9.1, Web Update 2

Limits, distribution, and contact information

Limits
The following limits apply to the Student Version of the products:
PSpice A/D
Circuit simulation is limited to circuits with up to:
  • 64 nodes
  • 10 transistors
  • 65 digital primitive devices
  • 10 transmission lines in total (ideal or non-ideal)
  • 4 pairwise coupled transmission lines.
Additional limits:
  • The sample library includes 39 analog and 134 digital parts.
  • Device characterization in the PSpice Model Editor is limited to diodes.
  • Stimulus generation in the PSpice Stimulus Editor is limited to sine waves (analog) and clocks (digital).
  • Circuit optimization with the PSpice Optimizer is limited to one goal, one parameter, and one constraint.
  • You can not create CSDF format data files.
  • You can only display simulation data from simulations performed with the Student Version of the simulator.
Schematics
  • You can place a maximum of 50 parts on a schematic design.
  • You can only draw on size A sheets.
Capture
  • The PSpice libraries are the only ones included. The standard Capture libraries are not included.
  • Import facilities, netlisters, and accessories that are not relevant to PSpice are not included.
  • You can not save a design that contains more than 60 parts. (You can view or create larger designs, but you can not save them.)
  • You can not save a library that contains more than 15 parts.
Minimum hardware requirements
  • Intel Pentium 90MHz or equivalent processor
  • Windows 95, Windows 98 or Windows NT
  • 16MB RAM (32MB recommended)
  • 90MB of free hard disk space
  • CD-ROM drive
  • Mouse or similar pointing device
Distributing the Student Version of PSpiceThe Student Version of PSpice can be distributed freely -- we encourage it -- providing all copyrights are observed and the software is not redistributed under another name.
Contacting customer support
To obtain assistance with the Student Version of PSpice, you can send questions to our customer support email address: mailto:tech.support@pspice.com

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Friday, September 26, 2014

In , by // 11:18 AM // Leave a Comment

MATLAB VIDEO LECTURES online free course

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In , by // 11:04 AM // Leave a Comment

MATLAB VIDEO LECTURES-lecture-6

lec-06 Solution of Differential Equations in matlab

 
A video lecture-6 about MATLAB AND COMPUTATIONAL METHODS FOR ENGINEERS AND SCIENTISTS by Prof. A. Routray.
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In , by // 10:59 AM // Leave a Comment

MATLAB VIDEO LECTURES-lecture-5

Lecture 5: Special Matrices in matlab

 
 
A video lecture-5 about MATLAB AND COMPUTATIONAL METHODS FOR ENGINEERS AND SCIENTISTS by Prof. A. Routray,
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In , by // 10:53 AM // Leave a Comment

MATLAB VIDEO LECTURES-lecture-4

lec-04 - Structure : Operators Language Syntax in matlab

 
 
A video lecture-4 about MATLAB AND COMPUTATIONAL METHODS FOR ENGINEERS AND SCIENTISTS by Prof. A. Routray,
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In , by // 10:49 AM // Leave a Comment

MATLAB VIDEO LECTURES -lecture-3

Lecture 3: - Structure : Operators and Special Characters

 
 A video lecture-3 about MATLAB AND COMPUTATIONAL METHODS FOR ENGINEERS AND SCIENTISTS by Prof. A. Routray, IIT Madras
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In , by // 10:45 AM // Leave a Comment

MATLAB VIDEO LECTURES-lecture-2

Lecture 2: - Structure : General

 
 
A LECTURE -2 ABOUT MATLAB AND COMPUTATIONAL METHODS FOR ENGINEERS AND SCIENTISTS by Prof. A. Routray, IIT Madras
 
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In , by // 10:37 AM // Leave a Comment

MATLAB VIDEO LECTURES-lecture-1

Lecture 1: - Introduction : Getting Started with an Example

 

 
 
 
 A lecture about MATLAB AND COMPUTATIONAL METHODS FOR ENGINEERS AND SCIENTISTS by Prof. A. Routray, IIT Madras
 
 
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In , by // 6:35 AM // Leave a Comment

What is the difference between a battery and a charged capacitor?


  main difference: "Capacitor is a device that is used to store an electric charge. It is basically an arrangement of conductors. A capacitor stores electrical energy directly due to the creation of an electrostatic field which is created between two metal "plates". Battery is a device that consists of electrochemical cells that convert stored chemical energy into electrical energy."
 

CAPACITOR

 A capacitor consists of two conductors which are separated by a dielectric medium. It stores electrical charge and is capable of discharging it whenever required. It blocks Direct Current (DC) and allows Alternating Current (AC) to pass through it. Therefore, they are widely used to extract AC components from DC + AC components. It is basically an arrangement of conductors. Capacitors are widely used in electrical circuits as energy-storage devices.


Capacitors are capable of storing electrical energy directly as an electrostatic field is created between two metal "plates". A capacitor is generally constructed using two metal plates or metal foils separated by an insulator called a dielectric material. This insulator prevents charges to move across the plates. Any non-conducting substance can be used as a dielectric material. However, porcelain, mylar, teflon, mica, cellulose are generally preferred. Thus, a capacitor can be defined as an arrangement of two conducting surfaces separated by a dielectric medium. One of the common applications of a capacitor can be found in a flash camera. A capacitor in a flash camera charges up and stores the electric charge. It releases the charge to a light bulb, and thus flash is created whenever the picture is taken.

BATTERY



 Battery is a device that consists of electrochemical cells that convert stored chemical energy into electrical energy. The battery was created in 1799. Originally, it was called the Voltaic battery. The first battery was created by using copper and zinc rings. The set up was placed in an acid solution that is known as the electrolyte. A battery has evolved since then. However, the basic mechanism remains the same till now. A battery consists of two ends namely cathode and anode. In a battery, the positive terminal is referred to as a cathode. On the other hand, anode is the negative terminal. The two terminals are connected in order to form a circuit. Electrons move through the wire and electricity is produced.


A modern battery zinc carbon is packaged in zinc that serves as a container as well as an anode. A carbon rod is used as a positive terminal. An electrolyte is used as a paste of zinc chloride and ammonium chloride dissolved in water. The electrons that move from anode are collected by the carbon and then are returned to cathode portion of the battery. A battery can also be explained as an assembly comprising of 2 or more cells connected in series to generate a voltage which is equivalent to the sum of the voltages of the cells.

Comparison between Capacitor and Battery:


Capacitor
Battery
DefinitionIn capacitors, energy is stored in their electric field.Battery is a device that consists of electrochemical cells that convert stored chemical energy into electrical energy.
TypesThree major types of capacitors are ceramic, electrolytic, and tantalum :
  • Electrolytic capacitors - They resemble small cylinders and range in value from 1 µF to several Farads.
  • Ceramic capacitors - They are quite smaller in size and value, ranging from a few Pico Farads to 1 µF.
  • Tantalum capacitors – They are quite similar in size to ceramic. However, they can hold more charge, up to several hundred µF. They tend to be accurate and stable.
  • Alkaline battery
  • Lead-acid battery
  • Lithium battery
  • Lithium-ion battery
  • Nickel-cadmium or NiCad battery
  • Zinc-carbon battery or standard carbon battery
Uses
  • High Voltage Electrolytic used in power supplies.
  • Axial Electrolytic - lower voltage smaller size for general purpose where large capacitance values are needed.
  • High Voltage disk ceramic - small size and capacitance value, excellent tolerance characteristics.
  • Metalised Polypropylene; small size for values up to around 2µF good reliability.
  • Sub−miniature Multi layer ceramic chip (surface mount) capacitor. Relatively high capacitance for size achieved by multiple layers. Effectively several capacitors in parallel.
  • Wet-cell - Lead acid batteries to power vehicles; also used by industry.
  • Dry-cell non-rechargeable - these are the most common types of household battery.
  • Dry-cell rechargeable batteries - these are widely used in power tools, cordless appliances, mobile phones etc.
Charging & DischargingQuicklyComparatively slow
Size (Equivalent charge)Comparatively largeComparatively small
CompositionThin metal sheets held very close together but separated by an insulatorChemicals and metals
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In , by // 6:24 AM // 1 comment

proud to be an electrical engineer(eee)

R u want to be an electrical engineer/electrical and electronics engineer (EEE),
it is a branch of engineering mainly deals with hardcore electrical stuffs like transformer,motor,fan.
its all about our day today life.
if u choose this branch u never going out of job
it is has huge impact on our life,
below u can these videos for better understanding
HERE WE GO :)

 
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