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Most of those models that have those three parameters, come with pre-made LTspice symbols, perhaps in a separate .ZIP file.? They set up those parameters automatically, so you don't need to.?

Then it is likely that something is different between what you built, and what you simulated.? The simulation ought to match the hardware, if all things were equal.? Apparently something was not

*Thanks so much* for the clear explanations.? ?Now I know what I am doing.? I had speed set = 1 and tripdt =100p, but I didn't know why. I am running a simulation right now using the 74LVC1G14

Thank you ALL for your input.... The only response I can give right now is that Yes I have a bread board circuit, signal generator, and scope which shows the cross over clearly on the Darlington

Here is the way these three parameters are most commonly used in these (and similar) models: * Speed allows you to choose a relative speed variation.? Speed=1 is for a nominal (typical) part.? It is

Oops, I meant to say " *74LVC1G74*. Jim

I need help setting up the 74LVC1g74 Flipflop parameters for 5V operation. From the 74LVC1G.lib file I get the following information:

In order to tune crossover distortion, the best is visualizing linearity. Distortion percentage doesn't indicate what to adjust.

It's in here: Files > Temp /g/LTspice/files/Temp which is where all newly uploaded files are. Andy

Mike, Thanks a lot, kindly share the uploaded link here.

Yes, I know. I have already uploaded such a schematic example </g/LTspice/files/z_groups.io/Examples/Apps/THD%20Notch%20Filter/THD_Notch_Test.zip> using one a few years go. It doesn't

To evaluate and quantize crossover distortion you can use a notch filter (RC bridge) to eliminate the fundamental frequency out of the output voltage. [email protected]> wrote:

The best way to handle different simulations, is to name the schematics differently.? Say, MySim_Tran.asc and MySim_AC.asc, which might be identical except for their simulation commands.? Then each

As you know, this group is not the place to officially make suggestions to the LTspice developers about recommendations or improvements.? This group is people like you who *use* LTspice; we are not

Hello, Some additionals features : Some options for future releases. Christmas is over, but it will be for next year:) - MultiTabs per plot setting could be very nice, especially when we changed

I have uploaded an example schematic featuring the Quad 303 output stage </g/LTspice/files/Temp/Quad-triple_DC.zip>. -- Regards, Tony

If your amp is in a high gain negative feedback loop, it can be harder to see the crossover distortion because the feedback look "eliminates" most of it.? Getting rid of that feedback would make it

Yes. To "see" it, as a distorted- looking sinewave, you need to make the distortion bad enough so that it stands out.? Visually looking at sinewaves, they generally need to be pretty bad for humans

You can also do this with a .DC analysis. With this it's also very easy to do a "wingspread" plot, which plots the incremental gain, which is very revealing. -- Regards, Tony

...and apply a very low input signal when running the transient test.