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In message <kker0j+82e6@...>, dated Sun, 14 Apr 2013, Basier philippe <basier.philippe@...> writes: Has it gone wrong again? It should open in any browser. I just tried it and it opens

Hello How to open all_files.htm ? Regards Philippe

Hello, I need for LT Spice the simulation model of the CD 4566. Is the model avaiable anywhere? Best regards, Arnd

I need 74ls193 for LTSpice

Hello, You can only use .STEP to change the values of components in the .AC simulation. Best regards, Helmut

Hello Renato, Nearly all symbols in the LTspice library are intentionally made as specific symbols. This prevents that users corrupt their database. One can modify this symbol to allow to change the

Hello Richard, You can use formulas instead of a fixed value for a resistor. Therefore replace the value of 1k on your resistor with a formula. See below. R=100*(1+time/10m) This will rise the

Hello Echidna, Crossover Distortion -------------------- I calculated the formula with Fourier series and approximation. sin(x) = x-1/3*x^3 1-x^2 = 1-2*x THD = 100%*2*pi*sqrt(1/3*(D/T)^3)

Yes, I found 25*(D/T)^2 by trial. Running simuations that give me THD, I see it fits perfectly with D/T from 0.02 to 0. Yes, I meant "unable". Now, I understand better. The 25*(D/T)^2 is quite normal.

In message <kkdr4u+gvv5@...>, dated Sun, 14 Apr 2013, Echidna <mchambin@...> writes: Thanks. I just wanted to prevent others being confused. Agreed. I will try using Mathcad, but I can't

Hi All, is it possible to step a resistor over time? Right now if I use the step command like this: .step param R 100 1000 100 .tran 0 1ms 0 1 I end up with a bunch of parallel horizontal lines. What

Indeed, I found 25*(D/T)^2 by trial. Running simulations that gave me THD values for various D values. I have uploaded the .asc file of that simulaton. "enable" is a spelling mistake. I meant

In message <kkdlr2+p199@...>, dated Sun, 14 Apr 2013, MOHAMMAD A MAKTOOMI <amaktoomamu@...> writes: It will be ignored, which is equivalent. I don't see a solution if R2 varies at

In message <kkckve+t28o@...>, dated Sat, 13 Apr 2013, Echidna <mchambin@...> writes: I think you mean you found 25*(D/T)^2 by trial. This can be misleading. I once found a power function

Hello John, Actually, a DC input voltage is present. But, I don't know if it will be ground in AC analysis.If that's grounded then how could I have output (ignore offsets at this moment).

In message <kkdb2u+pa7l@...>, dated Sun, 14 Apr 2013, MOHAMMAD A MAKTOOMI <amaktoomamu@...> writes: Varying the value of R2, with no other input signal, doesn't produce any output,

Thank you, Andy for your hints. But, in '.AC' we need to have an AC voltage or current source. Here, I don't have any such thing (as I wish to vary the frequency of R2, NOT that of any source), so how

MOHAMMAD A MAKTOOMI <amaktoomamu@...> wrote: Note: In your circuit, you may need to decrease the maximum timestep down to about 10ns. (.tran 0 0.1m 0 10n) The output waveform is highly distorted

Janiel Feng <m_zhao12@...> wrote: First, try some of the FAQ files located here: Files > FAQ (http://tech.groups.yahoo.com/group/LTspice/files/%20FAQ/) In particular, look at