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Jerry, Thanks for your comment, I didn't know that the inductance decreases at higher frequencies. The modification of the model to correctly reflect the decreases at higher frequencies is beyond my

Ohms being Volts per Ampere, Ohms per Volts would resolve as 1/Ampere. As you say, I don't know that a unit has been deemed useful for Ampere power minus one

Equal to x peramps?? While resistance, capacitance, reactance and impedance have inverse units (conductance, elastance, susceptance and admittance), I don't know of any for inductance, voltage or

Thanks Dave Bell.

Well, it’s the reciprocal of current, which is a rather obscure unit. It used to be common as a figure of merit for (analog, moving coil!) milli- or micro-ammeters. The higher the number, the

Is there such a thing as x ohms/volt?

To be clear, I am not talking about the sort of 'design' posted by ik.weide. I mean choosing the core size and material, and the number of turns of the gauge of wire that will fit on the bobbin.

Although wrapping parameters in braces works, it's actually not necessary - NF(Rsrc) works as well as NF({Rsrc}), in my example. I guess this is because Rsrc appears in the list of waveforms available

Functions defined in the schematic cannot be used in the waveform viewer. Similarly, parameters cannot be used either, unless they are stepped, then they can be accessed through the same syntax as in

Actually inductance also varies with level. These are the "magic" properties of iron cores. Basically, shaking the magnetic domains is more difficult at the start of the magnetization curve (until it

Hi Andy, thank you, it looks like the solution to the issue! :)

You have the mind of an ADI engineer. Indeed, it does not work when using an external editor :--) -marcel

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

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:

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

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

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

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

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

Many thanks, guys.