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.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

Hi Tony, I'm not sure if that is totally true - depending on what you define as 'an array of measurements' :) You can use a .step statement and then extract the step details from the .raw file. I

Hello Majid, The syntax is exactly the same as you would use in the waveform window, so I would develop the .meas statements in conjunction with plots of the data you're interested in, even if in the

Hello Majid, Take a powerful text editor (PSPAD) and open the raw-file to get an idea how LTspice has saved Z() or S() in the raw-file. Try this with the example "s-param.asc" from the installation

Hello Philippe, I guess the circuit for the NE555 in his schematic has a mistake. Best regards, Helmut

Oooh I'm sorry. I made a misreading

Hello, I have uploaded two examples. Both use the symbol "opamp2" from [Opamp]. Files > Lib > OP27_test.zip Files > Lib > OPA27_test.zip Please be aware that the OP27 and OPA27 are different opamps.

Dear Helmut, Do you know what is the correct syntax of network parameters for measuring purposes? (Z(11) or Z11 or ...?), Thanks.

I tried Z11 and Z(11), but for both of them the result of measurement was FAIL'ed !

It seems very great, but I dont know the syntax for measuring the network parameters! (Z(11) or Z11 or ...)

Hello, If you have .measure commands in your schematic or your netlist, you will have their results in the log-file. Best regards, Helmut

Deer Helmut. Yes, you are right, but I want not to work with waveform viewer,I work in command window, so, just working with commands. Thanks again.