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Recent content by KHALEDRAHNAMA

  1. K

    Digital Communication Project

    Dear sir, I suggest you study some IEEE communication Protocol such I2C and Implement it with verilog or VHDL. Then try to burn your FPGA to Test it in real world . Practical stuff are more more better than just simulation for a LAB. Regards, KHALEDRAHNAMA
  2. K

    request: Available AVR's in your area with cost per chip

    I bought last week Atmega16 DIP package 4$ , SMD 3$. I am living in IRAN.
  3. K

    transformerless power supply

    I am afraid I do not get exactly your question . What is your input voltage and how small you need it to be? ? There are a lot of small new brand transformer today that you can buy one and use with a bridge . But, If you want to make it really small it must be a switching power supply ...
  4. K

    Clearing blocked holes in PCB's

    If I was you, I never drill any board ,My suggestion : Use plenty of flux. Then try to heat the remained lead with your iron. For whom that do not know when and where use flux: 1- If you want to melt a solder that had been melt before . 2- Used with some board or any materials that...
  5. K

    Simple DPDT Switch Question

    It is possible but it will not solve your problem and also resistor just waste your power . In cars they use mechanical solution and when the window goes up the shaft will be released . In your case if you want solve it with electronic you should sense the current and when it reach to high...
  6. K

    power pc mpc8280..interrupt

    There is two type of interrupt : 1- software 2- hardware Those interrupt that happen in PCI is a software interrupt , any PCI card have a processor when you put it in PCI slot this processor turn on and send some specific data to the RAM and then toward CPU . CPU as sooon as receiving the data...
  7. K

    Sending Data to Lcd using UART

    It sounds that you are reading from USART and not writing . try this : while(1) { Usart_write(i) ; }
  8. K

    Newbie help. 12v regulator

    With considering your first voltage source NTE970 is a good idea, It is not really complicated to use .
  9. K

    Stepper motor problem ..

    The problem solved , but I want to teach every one a good way to check any DC or even some Ac type motor function by simply connecting your MM to the motor's wires and turning the shaft with your hand , you should see some voltage that change with your turning speed Good Luck.
  10. K

    time polarized em wave interferometer

    You are asking for E-bomb system! I believe electronic should help us to create helpful devices instead of weapons.

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