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Recent content by Rahul Ahuja

  1. R

    AC Light Dimmer using 8051 ?

    Hi tpetar I have tried it on real parts. initially i gave +5v to the pin which is connected to the microcontroller to switch on the optotriac diode but i did not get any output at lamp side.
  2. R

    AC Light Dimmer using 8051 ?

    Hi I am trying to make a 230V AC light dimmer using 8051. I have developed a circuit shown below. But i am facing a problem that i am not getting any output from BT136. Please help me in fixing the problem ?
  3. R

    Tripping of Relay when operating with 8051

    Can you please tell me which diode can i use ???
  4. R

    Tripping of Relay when operating with 8051

    Point B will go into 7805 + supply, which will give +5vdc to controller?? Can i use this diode 1N4007 ???
  5. R

    Tripping of Relay when operating with 8051

    Please see the circuit.
  6. R

    Tripping of Relay when operating with 8051

    Hi This is Rahul Ahuja I am driving 0.5 hp 230VAC blower motor with 8051 using 10A relay. Everything is going ok but i am facing one problem. whenever relay gets ON it starts the motor but suddenly it resets the controller. I am using different power supply for controller and motor. Can any one...
  7. R

    180VDC motor control using 8051 ?

    Hi Is this circuit ok ?
  8. R

    180VDC motor control using 8051 ?

    Hi Will it work ?
  9. R

    180VDC motor control using 8051 ?

    Thanks Now let me study all this first then, i'll be more clear.
  10. R

    180VDC motor control using 8051 ?

    Thanks Tahmid Can i use ULN2003 as a driver ? Can you tell me the values required for R1, R2 and D1 ?
  11. R

    180VDC motor control using 8051 ?

    If you can upload, it will be very helpful for me.
  12. R

    180VDC motor control using 8051 ?

    Thanks Tahmid Surely i will first read the MOSFETs. I have worked on PWM to control the DC motor of 12v. Thanks
  13. R

    180VDC motor control using 8051 ?

    Hi Tahmid Thank you so much for your support. The motor rating is 180VDC, 2.2A, 0.5hp. Actually i am little bit confused regarding IRF840. IRF840 has 3 legs, please tell me how will i do the connections to get 180VDC using 5VDC from controller.
  14. R

    180VDC motor control using 8051 ?

    Hi This is Rahul Ahuja. I want to control the speed of my 180V DC motor using 8051 microcontroller. Can any one suggest me that how to convert 5V DC output signals of controller into 180VDC signals for motor ??

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