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  1. Qaisar Azeemi

    warming up an electrical genarator

    why is it not so in case of cars? we start them easily even if they are cool. they have same engines as we use in generators? secondly what is the reason behind that a loaded engine or motor can't start?
  2. Qaisar Azeemi

    warming up an electrical genarator

    Thank you. Yes i am talking about generators whose alternators are rotated with the help of Gas or Diesel Engine. here another question rises that Electrical part has nothing to do with the mechanical lubrication? what if we put the load on it without warming up?
  3. Qaisar Azeemi

    warming up an electrical genarator

    Hi, I can't find appropriate category for my this question. I request you to answer. why is it necessary to warm up an electrical generator for a few seconds before transferring the load on it? what if we directly put load on the generator without warming it up? A Quick response will be...
  4. Qaisar Azeemi

    i want to impliment PI and PID controllers using microcontroller, please help

    Hi all friends, I want to implement PI and PID controllers using microcontroller to make a CCPWM (Constant current pulse width modulator). need to make an algorithm for it. help required from experts thank you Qaisar
  5. Qaisar Azeemi

    Proteus ISIS suddenly Crashes on Simulation

    I have Redrawn the circuit in Proteus 8.0 and start simulation but Unfortunately it is also crashing after only a minute of simulation :( ................. :( .........
  6. Qaisar Azeemi

    Proteus ISIS suddenly Crashes on Simulation

    pds.exe has stopped working ... the schematic file that i've made in proteus 8.1 is now not working on proteus 8.0, and giving the error pds.exe has stopped working. :( kindly Help
  7. Qaisar Azeemi

    Proteus ISIS suddenly Crashes on Simulation

    Yes i am using it as administrator. Thanks Alertlinks, i am going to use proteus 8.0 and and let you know the result then. thanks again :)
  8. Qaisar Azeemi

    Proteus ISIS suddenly Crashes on Simulation

    Hi, I am using Proteus8.1 sp1 on my windows 7. I also checked it on windows 8 but on both It Suddenly Crashes after few mints of simulation. To solve the Problem I have Completely Uninstalled it along with its all traces using revo uninstaller and regedit from my system and reinstalled it...
  9. Qaisar Azeemi

    light wave length and refrective index relationship in Fiber optics

    hi all; i dont know if it is a right place for this post or not but i think it is related to basic electronics. i want to know about the relationship between light wave length and refractive index of the material. is the refractive index a changing property of the material?? if yes then why? if...
  10. Qaisar Azeemi

    post processor problem in orcad

    hi! i am using orcad9.2 for my design. i am facing a problem in post processor. when i completed my routing i went to options--> post processor settings and get a blank screen with no layer defined???? now i am looking for how to proceed next to make my gerber file. i need guidance of experts...
  11. Qaisar Azeemi

    Error in whole layout in orcad9.2, error after DRC and not making gerber file......

    hi all! i have designed a whole layout in orcad layout plus. but in the end when i try to make gerber file it gives the option that gerber viewer can't open the gerber file. it is giving the following errors as shown in the picture below. here it is showing many errors in each connection. i...
  12. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    thank you alen ... i come across another problem regarding foot print creation... i make a foot print for led as shown in the figure below... here if you see in left hand side i sketched a sstop layer line to show negative leg of led on pcb ... but i can't see any option in orcad to erase the...
  13. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    thank you alan. kindly help me regarding my #23rd post above.
  14. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    thank you very much spudboy. please tell me one another thing... when i make a gerber file and sent it to manufacturer to make boards for me.... so how will it determine the size and other specific measurements of the pcb and the components of the pcb? i mean to ask do i need to tell...
  15. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    i have created the gerber file in orcad using AUTO----> run post processor menu..... but there i didn't find any option of viewing gerber file... in TOOLS menu i didn't find any gerbtool option.... kindly tell me how can i proceed to see my gerber file and how can i take separte printouts...
  16. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    thank you spudboy. can you please give a brief discription about all layers used in PCB? any artical? pdf note?
  17. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    my pcb is single sided designed for through hole components. so what is the use of SMT layer???? what is FAB drawing?
  18. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    Shortly... i want to remove the green blocks and yellow line of jumper form my pcb to get the bottom copper layer only.. how to proceed for that? compare it with the fig below. does garbar file contain the information of the board and component exact sizes???
  19. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    I have successfully design my pcb on orcad9.2.. please see it in figure. now i have a few problems: 1)I want to print the bottom and SSTOP layers sepretely on white A4 size pages. but the printer is printing exectly the same image as shown in figure above. 2) Secondly my software...
  20. Qaisar Azeemi

    [SOLVED] getting footrint error in orcad 9.2

    thank you spudboy. i resized the size of the board but can't find the AST layer in your indicated manu where top layer was selected. it is only showing 0,1,2,21,25,26 layers. rest of the layers are inactive. - - - Updated - - - kindly also tell me what is the difference between Cadance layout...

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