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Spice

Discussion in 'Electronic Design' started by John, Apr 30, 2005.

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  1. John

    John Guest

    Out of all the simulation programs out there is Spice the tops and easy to
    use over it old Dos days, or is there other programs like Electronic
    workbench worth looking at. Is there others worth looking at besides the
    limited working free ones out there. What do you like.
     
  2. John  Larkin

    John Larkin Guest

    Most simulation programs are Spice based.

    EWB is expensive crap. LT Spice is free and not at all limited.

    John
     
  3. Damir

    Damir Guest

    http://www.linear.com/designtools/softwareRegistration.jsp
     
  4. Damir

    Damir Guest

    http://groups.yahoo.com/group/LTspice/
     
  5. Well, all those touting LTSpice, I might as well tout mine
    http://www.anasoft.co.uk

    Kevin Aylward

    http://www.anasoft.co.uk
    SuperSpice, a very affordable Mixed-Mode
    Windows Simulator with Schematic Capture,
    Waveform Display, FFT's and Filter Design.
     
  6. John said
    Yet another option for personal use:
    http://orcad.com/downloads.aspx
     
  7. Joe

    Joe Guest

    I started with EWB back at version 5.12 When they renamed it Multisim, I
    upgraded and then disgarded the program. I have EWB on a computer only
    because I have alot of files in the EWB format.

    I moved to TINA [ http://www.tina.com ] because of it's educational
    interface. I like the ease of operation for the newbies to spice
    simulations and the ease of changing the graphs.

    I am looking at Kevin Aylward's superspice now. It looks pretty good. The
    faults I find with it are mine ... due to lack of experience with the
    program.

    I did find one thing odd, but interesting when doing simulations. Build a
    simple resonant circuit ... 100 uH, 1 nF, and 1 ohm. Do an AC analysis. Of
    course the resonance is 15.9 MHz. Then change the 1 nF to 100pF. Spice
    thinks the new resonance is about 50 MHz. It happens in both tina and
    superspice. Odd, but interesting.
     
  8. Jim Thompson

    Jim Thompson Guest

    "Of course" ???

    Did you screw up during typing? Better go back and look again ;-)

    ...Jim Thompson
     
  9. Joe

    Joe Guest

    Yeah Jim, I screwed up on the typing. It was a 100 nH coil with a 1 nF cap
    and a 1 ohm resistor. Then when I changed the 1 nF cap to a 100pF, I got a
    little over 50 MHz as the resonance. I must of had milli on the mind ...
    lol.

    I did think it was odd ... the resonance not moving from 15.9MHz to 159 MHz,
    like I expected ....
     
  10. GPG

    GPG Guest

    The resonance is proportional to the sqrt of the capacitance
     
  11. Joe

    Joe Guest

    Agreed. I got to clear my head before doing some things .... like thinking.
    Or maybe I shouldn't think when I'm not use to it.
     
  12. Note if you build a hierarchical set of schematics, you can actually get
    30 * 25 = 750 real components in the demo version.

    Kevin Aylward

    http://www.anasoft.co.uk
    SuperSpice, a very affordable Mixed-Mode
    Windows Simulator with Schematic Capture,
    Waveform Display, FFT's and Filter Design.
     
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