User Activity

  • Posted a comment on discussion ngspice-users on ngspice

    Before the days of Verilog-A, I used to get by with spice macros, and they worked just as well. That said, I've spent the last 2 or 3 months trying to get Verilog-A fully functional and playing nice with NGSPICE. Its taken far longer than I thought it would, but it's almost at a testable level. I'll release it soonish. Within the next 2 or 3 weeks. -- Kind regards, Justin Fisher.

  • Committed [8545ee] on Code

    Added device array capability. Eg R1<1:0>

  • Committed [3e2e21] on Code

    added some new devices parameters for FinFET processes

  • Posted a comment on discussion Help on ngspice

    Even without the prior state the hysterisis can't show you, the trip point in a DC sweep is going to be somewhere near the 2 trip points. You'll never see it in transient though, because 500us is far to fast. Your quite sure though, so please go ahead, flail around, and ask design related questions instead of simply running a sensible simulation. -- Kind regards, Justin Fisher. On Mon, Mar 2, 2026, 11:48 Holger Vogt h_vogt@users.sourceforge.net wrote: A circuit with hysteresis has an input range...

  • Posted a comment on discussion Help on ngspice

    Without having an opportunity to look at what you're doing... what is the speed of your input in transient? If it's anything other than very slow indeed, you won't get a good idea of the threshold voltages. -- Kind regards, Justin Fisher.

  • Posted a comment on discussion ngspice-users on ngspice

    Are you using Cadence to netlist? Why not just run the netlister to output an HSPICE netlist? Cadence can do that. -- Kind regards, Justin Fisher.

  • Posted a comment on discussion ngspice-devel on ngspice

    The models I used were characterized to -40C and worked just fine down to -40C There's no reason they shouldn't. -- Kind regards, Justin Fisher.

  • Posted a comment on discussion ngspice-users on ngspice

    You have specified VSIG twice. You have a whole load of constants that aren't defined. What is the value of 13.0TP? -- Kind regards, Justin Fisher.

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Personal Data

Username:
justin0419
Joined:
2012-04-04 14:04:19
Location:
Austria / CEST
Gender:
Male

Projects

This is a list of open source software projects that Justin Fisher is associated with:

  • Netlist A netlister for GEDA/Gschem Last Updated:
  • Project Logo ngspice   Last Updated:

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