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Thanks for the kind remark. :) :) Like my posts, I *do* try to make my schematics sensibly organized and easy to read (but sometimes I fear I forget to mention that I have decreased the default font

Hi Tony, Try Octave and see. If you have problems, let me know and I'll track down th

Hi Everyone! In this matter, I can not recognize the your sentence conccerning this matter. note) I can only understand the sentence conccerning the Enginearing. I am sorry. Because I am poor for

At this point I think he does.

I think the main problem is that in a subcircuit, the connecting lines and layout of an equivalent schematic are basically missing. So only way I know of is to go through the subcircuit line by line,

Am I being too simplistic or does this just mean that the e-mail has to be someone @ yahoo.com ? Did not know about the gmail option, but may not be as reliable. (?) I am assuming he does not have

Hello Dave, Thanks for the Matlab example - I'll get around to trying that sometime. I assume it will work after a fashion in Octave, as Matlab is beyond my budge

A friend of mine, next to me, said: "He must be different", but what he means by that is "He's not normal" :) , but in a good way. I, for one, can only be glad he is so. Vlad

It sounds great, I am so thankfull for all of these information. These are all about what I am looking for, wish help some others too. Thanks again dear professionals.

.model 1N746 D(Is=10p Rs=13.65 N=1.27 Tt=50n Cjo=582.6p VJ=0.75 M=0.33 Bv=3.027 IBV=0.01 Vpk=3.3 Iave=200m diss=500m mfg=Motorola type=zener) .model 1N4153 D(Is=0.1p Rs=6 Tt=3n Cjo=1p Bv=100 Ibv=0.1p

.MODEL 1N4153 D(Is=0.1p Rs=6 CJO=1p Tt=3n Bv=100 Ibv=0.1p)

Hello Rick, Thanks, But i have connected the ground on the R285 to R295 resistors. Which is ground. Do you think there has to be some big resistor at the return path? say 100K since the input and the

After searching LTspice files exhaustively for LED models, it seemed to me that the best ones were Helmut's, i.e. this one for a GaAs LED: *Typ RED GaAs LED: Vf=1.7V Vr=4V If=40mA trr=3uS .MODEL

Thank you very much Helmut. I can handle all of that myself. I am just studying OP-Amps also and need this one for a color organ circuit that I need ?figured out. Best Kevin.

Thank you Helmut... :D

Hello Kevin, You can use the symbol opamp2, because it has the same pin-order +in -in V+ V- out. You will need then only an additional .include LF353.mod in the schematic. The value have to be LF3

I down loaded a OP-AMP I need to study like your TL072 verses LT1057 Folder. Question What do I have to do in PSpad and or on schematic to use the Universal Symbol "opamp2. It states: * LF353

[...] Thanks Vlad. That was a very good explanation. I'm running Ubuntu 10.04.02 LTS, but I never had any display problems or found a need to use the command line switches. Most of the time I run