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What was the need for it, perhaps an alternative can be found. I think mousing over them is all you can do.

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

Tony, That is exactly what I was saying (or meant). Andy

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

* 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

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

Thanks so much guys.

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.

I realized it pretty quickly and remedied the problem.

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

Wrong thread, I think, Bruce. -- Regards, Tony

The inductance ratio is the squared of the winding ratio. If you need a 4:1 ratio for the windings. The Inductance shall have a 1:16 ratio. Ie. A 1 uH and a 16 uH inductor. Cheers! Bernie tir. 18.

* Define the primary inductance as a parameter Lp * Change the value of the primary inductor to {Lp}. the curly braces will pick up the value of parameter Lp * Define parameter n to be the turns

Well, we can't tell for sure from the limited information you supplied, but the Q function for a capacitor can only be an explicit function of "x". "x" is the special variable for the voltage between

Hello, My question is simple, and I think it is a bug: When I use function that is defined by .func statement in capacitor equation Q=func(args), I got the error that there is no such function. But it

With that level of input data, the answer is 'make it about enough'. ====================================================================================== Best wishes John Woodgate OOO-Own Opinions

hello sir, how can i set the total winding in trafo simulation? (flyback transformer)

Most kinds of protection involve both a clamping (shunt) element and one (in series) that limits current. Inductors (which ferrite beads are) are just one particular type of series element.

That's not quite true. As you say, you can define functions and save them in plot.defs. So, for example: .func hFE() {Ic(Q1)/Ib(Q1)} ..allows you to label a plot hFE() - useful in device testjigs.

I didn’t follow the discussion, but allow me to throw in that input protection against HF-transients like electrostatic discharge ?sparks“ often can be achieved by ferrite beads put in serial