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Recent content by Ehab Abdalla

  1. E

    Buck Converter drawing huge current

    Current through C3 is large 'exceeds 20Amp.' What I want to know is there any efficient method to limit the current through the capacitor ?! output voltage should be 24V
  2. E

    Buck Converter drawing huge current

    the capacitor at the output of buck converter draws huge current and i need to reduce it,can anyone tell me how !!!! Thanks in advance.
  3. E

    Need help for my project

    I'm using PIC18F4431 to generate 6 PWM inorder to control the speed of a three phase induction motor. I'm also using IR2112 for gate driving of MOSFET (IRFP460). The problem is that the motor dosen't rotate at all and I can't figure out why Here's the MikroC Prog. and the schematic Hope anyone...
  4. E

    18f4431 8PWM problem

    Thanks alot Electro nS
  5. E

    18f4431 8PWM problem

    I'm using PIC18F4431 and MikroC but I don't know how to operate the 8 PWM found in PIC so I need help
  6. E

    High side MOSFET poblem

    I have changed the bipolar transistors to be able to withstand 250V but once i plug the power,the capacitors (400V rated) blow up
  7. E

    High side MOSFET poblem

    I'm trying to drive MOSFET (IRF644) as a high side switch,input voltage is 220 Vdc and the frequency ranges from 0HZ to 100HZ and I don't want to use any IC like ir2112 or ir2110 just need to control the MOSFET with transistors,capacitors and resistors. I have found a circuit which I tried...
  8. E

    Need help in 3 phase inverter

    Hi everyone,I have problem in controlling three phase inverter and I'm not able to figure it out. I've attached the schematic.If anyone have suggestions or figured out the cause of the problem Please let me know Problem:Simulation runs for just 1 second then stops saying there's an error in pin1...
  9. E

    Need it in <C>

    No,I haven't started it yet because I don't know how to change the frequency of the PWM during execution of the program .
  10. E

    Need it in <C>

    I'm using MikroC for programming microcontrollers and I'll use it for 16f777. Here's the application note from microchip
  11. E

    Need it in <C>

    I trying to build a three phase inverter based on microcontroller to control the speed of three phase induction motor using variable frequency method. I've downloaded a program from microchip but it's written in assembly language and I need help to change it to C so that I could be able to...
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