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Recent content by w888k

  1. W

    Doppler ultrasound blood flow detector???????

    Hi: As I mentioned before I have no experience with PLL. Since that gave me headache. That was a few years ago and when I tried to some way to extract doppler frequency from carry frequency. I used a mixer instead. Sorry I can not help.
  2. W

    Doppler ultrasound blood flow detector???????

    beaphster: Thanks for your input. I guess it is. It did not make sense if for the same frequency, pulsed wave can excite the transducer while the CW can not. sure pulsed flow meter is better for CW flow meter, but for my flow meter, I want somthing small and simple, that is why i go with CW...
  3. W

    Doppler ultrasound blood flow detector???????

    Beaphster, Thanks for the link and reply. I had a look at the site. I prefer ready to use transducer if possible. But if that is not possible, or I may need to built a custum made transducer for a special purpose, this is the great place the get the material. Actually I have done google search...
  4. W

    Doppler ultrasound blood flow detector???????

    Great post, guys! I want some information on CW transducer too. Searched high and low for 10Mhz transducer and could not find it anywhere. Thanks for your input!

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