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Recent content by yev15

  1. Y

    Motion controller with PC interface

    Hi guys, I am looking for an inexpensive motion controller with PC interface for an academic lab. Do you know there i can buy it? Thanks.
  2. Y

    Explanation of Fading and its types

    Re: Fading Look for this book on the eDonkey: "The Mobile Radio Propagation Channel - Wiley&Sons" I have it, but it's too large for uploading - 47M. yev15 :D
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    parallel port interface with DC motor

    Yes, you can use the D/A and the analog cirquit from the figure 12. I think that the LM12 is discontinued, so you need to replace it by another power amplifier. Good luck!
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    parallel port interface with DC motor

    Hi Raheel, First of all, if you want to make a speed control, you will need to implement the closed loop control. Take a look on the LM628/629 digital PID controller from National Semicoductor. There is a complite cirquit diagram in the datasheet, including the controller and the power stage...
  5. Y

    Vector control theory?

    vector control theory Hi guys, I'm looking 4 a documents thats explaines the theory of the Vector Control. 10x
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    RF splitter, combiner and duplexer. How does it work?

    how does a combiner work Hi frice, Thanks for your advice, but I can't find the book on the MCU. Could You be so kind to give me the link?
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    RF splitter, combiner and duplexer. How does it work?

    rf splitter combiner Hi all, I am looking for a basic information about RF splitters, combiners and duplexers used for cellular equipment testing. How does it works? Where is it usefull? Thanks a lot.
  8. Y

    is safe to create a clock to control an A/D using FPGA?

    The jitter is very serious problem in the flash ADC. Once, when i tried to create a 40MHz clock using Acex FPGA, the jitter caused a high noise in the ADC.
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    Looking for Object detect sensors..

    I have never worked with Infra Red sensors. There is a short explanation about the flame detectors: **broken link removed**
  10. Y

    Looking for Object detect sensors..

  11. Y

    Looking for Object detect sensors..

    Yep. Do you need some help in sensor design?
  12. Y

    Looking for Object detect sensors..

    Sory, I don't. But the only reason to use the separate transmitter and reciever in object detection sensor is a need of deadzone cancellation.
  13. Y

    Looking for Object detect sensors..

    Are You talking about Sensotech site? They moved to Canada just couple of months before, maybe there are still some problems with the internet site. You can give me your e-mail address and I'll ask them to contact You. :D
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    Looking for Object detect sensors..

    Answer to nvp: If You are looking for a sensor for commercial product, You can contact this company: www.sensotech.ca. I worked there two years before. They produce different kinds of ultrasonic sensors. Their prices may be very atractive. If you are interesting in only some pieces, look for...
  15. Y

    Looking for Object detect sensors..

    Yes, sure. With ultrasonic sensor you can detect the presence of the object in the defined area. You can choose sensors with different frequencies and beam-width. Usually, the ultrasonic sensor is more expensive than the IR, but it provides better detection probability and allows to define (to...
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