Re: Using Q=expr syntax in capacitor
Hi Andy, thank you, it looks like the solution to the issue! :)
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George Yashin
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#147553
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Re: Is there a way to make node numbers appear on LTSpice schematics?
You have the mind of an ADI engineer. Indeed, it does not work when using an external editor :--) -marcel
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mhx@...
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#147552
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Re: Transformer models WAS: New Simulator Written by Mike Engelhardt
#Transformer
It depends how you measure inductance. A real inductor has series resistance (copper loss) and parallel resistance (iron loss).? You can measure in two ways? - as a series RL network and as a
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John Woodgate
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#147551
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Re: Transformer models WAS: New Simulator Written by Mike Engelhardt
#Transformer
Jerry, What causes a transformers inductance to decrease with increasing frequency? It sounds like my model of how audio transformers work is too simple. -- Gavrik wrote:
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grassrake@...
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#147550
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Re: Is there a way to make node numbers appear on LTSpice schematics?
marcel asked, " Is it possible to use parameters and functions defined on the schematic (not in plot.defs) in the waveform viewer? " I do not believe you can.? If there is some ability to do that, it
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Andy I
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#147549
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Re: Transformer models WAS: New Simulator Written by Mike Engelhardt
#Transformer
The only issue I see with that is that it doesn't take into account the fact taht inductance decreases as frequency increases. The ratio is typically 4:1 between 20Hz and 20kHz. So using the LF
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Jerry Lee Marcel
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#147548
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Re: Is there a way to make node numbers appear on LTSpice schematics?
You're right. Changes to plot.defs are now immediately effective in 17.1.9. When this happened - I don't know, either. The lack of a mention in the ChangeLog is maybe because hardly anyone even knows
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Tony Casey
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#147547
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Re: Is there a way to make node numbers appear on LTSpice schematics?
I can answer my own question: editing the plot.defs file *immediately* has effect. (I reran the simulation before trying but did not restart LTspice.) Why don't they document these useful
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mhx@...
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#147546
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Re: Is there a way to make node numbers appear on LTSpice schematics?
Is it possible to use parameters and functions defined on the schematic (not in plot.defs) in the waveform viewer? Related, is it possible to use such parameters / functions in measurements, even when
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mhx@...
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#147545
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Re: Is there a way to make node numbers appear on LTSpice schematics?
Many thanks, guys.
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Chris - G0LOJ
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#147544
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Re: Is there a way to make node numbers appear on LTSpice schematics?
What was the need for it, perhaps an alternative can be found. I think mousing over them is all you can do.
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Richard Andrews
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#147543
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Re: Is there a way to make node numbers appear on LTSpice schematics?
Automatically assigned node numbers are ephemeral between runs, unless you label them. Giving the same label to different nets, shorts those nets together. I use it often. Giving more than one label
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Richard King
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#147542
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Re: Is there a way to make node numbers appear on LTSpice schematics?
Tony, That is exactly what I was saying (or meant). Andy
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Andy I
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#147541
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Re: Using Q=expr syntax in capacitor
George, I don't think this can be called a bug.? Be aware that SPICE's (and LTspice's) netlist syntax is not free-form and we are not free to use functions anywhere we want to.? There are syntax
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Andy I
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#147540
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Re: Flyback Transformer
#Transformer
* Run LTspice * Open Help (press F1, or go to Help > Help) * Open the Contents * Go to F.A.Q. > Simulating Transformers To simulate any transformers in SPICE or LTspice using this linear transformer
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Andy I
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#147539
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Re: Spark gap physics.
The following formula can be used to calculate the dynamic resistance of a spark gap: R = R0 * (1 - exp(-t / tau)) where: R is the dynamic resistance of the spark gap at time t R0 is the initial
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Richard Andrews
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#147538
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Re: ISL70444SEH declaration issue?
Thanks so much guys.
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@sparky1111
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#147537
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Re: Transformer models WAS: New Simulator Written by Mike Engelhardt
#Transformer
For those who are interested in modelling tube amplifiers and the output transformers used:?I have a thread on DIYaudio? with easy to use LTspice transformer models.
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Ite
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#147536
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Re: Using Q=expr syntax in capacitor
I realized it pretty quickly and remedied the problem.
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BRUCE108
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#147535
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Re: Transformer models WAS: New Simulator Written by Mike Engelhardt
#Transformer
This is a suspended thread, but I am now able to look at the proposed tutorial The first question is, what sort(s) of transformer? While the basic theory is the same for all, the practical design
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John Woodgate
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#147534
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