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  1. M

    A Design to detect phone busy tone

    call progress tone detector lm567 I need to design a circuit to detect the signals coming to the phone,when the other line is busy,or no body answers.....Any Help?
  2. M

    Help me build a basic FPGA board

    Building PFGA board Hi there, I am thinking of building a basic FPGA boards like the simple ones of Xess..is there anyone there who can help me or guide me?

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