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Recent content by yasir31

  1. Y

    control of dc motor through microcontroller via dual converter

    thanks Tahmid, i have attached the file, when i connect this circuit to 89c51, the output of this circuit becomes approximately zero(0.5 volts or less). plz tell me what to do????
  2. Y

    control of dc motor through microcontroller via dual converter

    Hi Tahmid, i tried but could not attach proteus file, i do not know how to attach it only gives me the option to insert image, plz tell me how to attach proteus file or if you can send me your email address so that i can mail you the file(that will be very kind of you)......????????
  3. Y

    control of dc motor through microcontroller via dual converter

    thanks tahmid, its okay about code because i have modified it and it is running nicely, now the lm 741 which i am using as zero crossing detector provides the required output (square wave) if i simulate it in proteus, but when i connect it to micro-controller it does not show any output i-e it...
  4. Y

    control of dc motor through microcontroller via dual converter

    Thanks Tahmid, yes i want to control the speed and the direction of motor, i have followed the algo but what should be this zero crossing thing......i have used lm 741, it is causing problem( it provides only positive volts to input of microcontroller) i can not detect zero crossing through it...
  5. Y

    control of dc motor through microcontroller via dual converter

    Guys i have given the url to the image of the circuitry, now you can better understand my problem. and does attaching such load to micro-controller directly affects it???? https://obrazki.elektroda.pl/84_1293996320.gif
  6. Y

    control of dc motor through microcontroller via dual converter

    Thanks guys, Actually i am looking to trigger two SCR bridges one by one, by that i mean only one bridge circuit will operate at a time. i have connected a zero crossing detector as the input of micro-controller, and yes i mean to run the program once in the positive cycle and once in the...
  7. Y

    control of dc motor through microcontroller via dual converter

    thnx but i wanna know what should be the code or algo to run the program just twice per cycle.........????
  8. Y

    control of dc motor through microcontroller via dual converter

    hello, I am a beginner in programming and i have written an algorithm for generating pulse through micro-controller for triggering of SCR after a specific delay, but i want my code to run just twice per single AC cycle, i dont know how to do it. ( i am using 89c51) Can anybody help???
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