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  • PI simulation

    I added the target signal to the PI schematic. Looks like it works. Still don't know how to zip it. Happy to if someone tells me how, if not it doesn't take to long to draw it in LT spice. Including two plots, 2usec and 10usec time constant targets. Traces are U1 and U2 outputs. Change R6 or L2 to change target time constant. Change ( )K1 L1 L2 (.013) coupling coefficient to vary amplitude response. Change R5 to change R damping. Change C2 to change amplifier Fc. L1 has a parallel capacitance of 84p for a 1Mhz resonance. Change the capacitance or inductance to change resonance. It's been fun changing things to see if what I thought would happen does. How close it is to hardware I don't know. I'm just learning spice modeling, any thoughts on improving the simulation would be appreciated.
    Attached Files

  • #2
    Originally posted by green View Post
    I added the target signal to the PI schematic. Looks like it works. Still don't know how to zip it. Happy to if someone tells me how, if not it doesn't take to long to draw it in LT spice. Including two plots, 2usec and 10usec time constant targets. Traces are U1 and U2 outputs. Change R6 or L2 to change target time constant. Change ( )K1 L1 L2 (.013) coupling coefficient to vary amplitude response. Change R5 to change R damping. Change C2 to change amplifier Fc. L1 has a parallel capacitance of 84p for a 1Mhz resonance. Change the capacitance or inductance to change resonance. It's been fun changing things to see if what I thought would happen does. How close it is to hardware I don't know. I'm just learning spice modeling, any thoughts on improving the simulation would be appreciated.
    Download the peazip app here: http://www.freeware.de/software/peazip_42521.html

    After installation, right-click on the desktop shortcut and it will ask ad to archive. It will make a file with .zip at the end. This zipped file can then be uploaded.

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    • #3
      Originally posted by sarcheshmeh
      Although I appreciate your efforts to promote ITMD to Geotech members, please do not spam the forums with this Facbook link.
      I have removed your other 6 duplicate posts.

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      • #4
        Originally posted by green View Post
        .... I'm just learning spice modeling, any thoughts on improving the simulation would be appreciated.
        Using the Net Label function will help you to draw more complex designs. Displaying a waveform for a signal labeled "tx" would be more meaningful than displaying a waveform for signal " N005", (or whatever).

        WinRar is a popular zip/unzip application for Windows. Last time I checked, it is free to use for individuals. It does zips and also does rars.
        Attached Files

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        • #5
          Thanks for the replies. In a week or two I'll be talking to someone that can help zip the file. I've been trying to paste the curves into Excel to plot a time constant plot. There is a lot to learn.

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