Mailing list archives : pcb-rnd

From:Robin Laing <>
Date:Mon, 29 Jun 2020 16:13:52 -0600
Subject:Re: [pcb-rnd] Off topic (maybe) - Spice simulator
in-reply-to:4229 from Evan Foss <>
replies: 4232 from Evan Foss <>
Hello, Evan,
I really don't know what the setup is.  I do know that it is to generate 
a timed, high energy pulse but due to COVID-19 and working at home, I am 
not deeply involved in that phase of the project.  It is in the hands of 
an engineer (Not Electronics).
Some discussion was brought up about simulation issues in Multisim in a 
teleconference and I thought I would ask the list.  From teleconference 
today, information that members of this group provided have been helpful 
but I don't know in what way.
On 26/06/2020 15:27, Evan Foss wrote:
> What does your experimental setup look like? I am picturing something
> like a digital version of Tesla's lab in NY.
> On Fri, Jun 26, 2020 at 3:46 PM Robin Laing <> wrote:
>> On 24/06/2020 13:48, gene glick wrote:
>>> Ok,  I see your point and I agree.  I was just trying to get a 1st order
>>> approximation for the simulator.
>>> In my experience,  and probably originally preached by Bob Pease, don't
>>> get lost in the simulator. Get close enough,  then build it.
>>> You can spend a lifetime trying to get an exact response from
>>> simulation... trying to work out everything virtually... only to find in
>>> the real world that it behaves a lot different.
>>> Spice takes a long time to run.  Dumb down your circuits enough to get
>>> at the most important stuff... then prototype it.
>> I wish I could beat this into some peoples brains.  They expect models
>> to be perfect all the time.
>> I have been told that if the model isn't working, then we have to look
>> at different tools to model it better.  I think that is part of the
>> issue in this case.  Simulation says one thing, real world says
>> something else.  In our case, the real world is the problem and we do
>> need to be closer to the simulation.  I am thinking that the real world
>> is related to the way that the circuit was constructed as a big part to
>> the issues.
>> Robin
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Reply subtree:
4231 Re: [pcb-rnd] Off topic (maybe) - Spice simulator from Robin Laing <>
  4232 Re: [pcb-rnd] Off topic (maybe) - Spice simulator from Evan Foss <>
    4248 Re: [pcb-rnd] Off topic (maybe) - Spice simulator from Robin Laing <>