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Re: Cannot find models
Hi Ben, You can always create your own symbol as a .asy file with the same name as the subckt. Here's the spice directive that I add to my schematic anytime I need a pot. Just make sure the .asy file
By Michael Silveus · #160438 ·
Re: Cannot find models
There are many (MANY!) 3-pin potentiometer symbols and models that you can find, if you really desperately need one.? I almost never use a potentiometer symbol+model, because you don't need one.? A
By Andy I · #160437 ·
Re: Cannot find models
The library you want (probably) is: potentiometer_standard.lib </g/LTspice/files/z_yahoo/Tut/Potentiometer/potentiometer_standard.lib>. Note: this only contains the models, not any
By Tony Casey · #160436 ·
Re: Cannot find models
HI, Ben. Search in the group archives, the folders in Files which have 'z_,,,' names. You will find more than one model. for 'potentiometer'.? That emwonder site no longer exists. -- This email has
By John Woodgate · #160435 ·
Cannot find models
Hi, my name is Ben and I was looking for the 3pin POT model in your database. I found this link: http://www.emwonder.com/spicemodels/. But I cannot open it. Can anyone help me? thank you already. -Ben
By benmeulenbeld2007@... · #160434 ·
Re: simulating CD4007 (CD4009 ??) for linear application
I don't remember if I said this or if I edited it out of my reply.? I think the circuit may have been intended as a volume control, where the control voltage changes very slowly or not at all.? In
By Andy I · #160433 ·
Re: simulating CD4007 (CD4009 ??) for linear application
Good catch with the square wave, I noticed that right after posting. In any case the simulation results I was getting had to do more with horrible control leakage (louder than the input audio signal!)
By Eli.rosenkim@... · #160432 ·
Re: simulating CD4007 (CD4009 ??) for linear application
Sweet! thank you, I will give those a try. :)
By Eli.rosenkim@... · #160431 ·
File Notifications #file-notice
The following items have been added to the Files area of the [email protected] group. * /Temp/CD4009UB_20250514.zip ( /g/LTspice/files/Temp/CD4009UB_20250514.zip ) *By:* eetech00
By Group Notification <noreply@...> · #160430 ·
Re: simulating CD4007 (CD4009 ??) for linear application
Hi In the event use still want to try the CD4009UB, I'm uploading a model, and a model for the CD4010B. Both are transistor based models. eT
By eetech00 · #160429 ·
Re: Oddity in Behavioural Voltage Source
Thanks Andy, that is interesting to know. I'll experiment more with the integration settings. Also, thanks for cleaning up my upload and the info on naming the signals. I'll be more considerate in the
By joerg · #160428 ·
Re: Oddity in Behavioural Voltage Source
The MacOS version of LTspice is pretty much an unknown to me. I didn't know what analysis time Joerg used. I plucked 200¦Ìs out of the air for my use, and my schematic was minimalist - Joerg's had
By Tony Casey · #160427 ·
Re: Oddity in Behavioural Voltage Source
Interesting.? Joerg's own .raw file with the same settings was 2.2 MB, almost 100 times bigger.? Well, we don't know what all the settings were, and he used the MacOS version of LTspice, about which
By Andy I · #160426 ·
Re: Oddity in Behavioural Voltage Source
Joerg, There is one other thing that needs to be said, because your simulated time points were too far apart.? I almost forgot about this, but it is important here and helps explain the discrepancy
By Andy I · #160425 ·
Re: Oddity in Behavioural Voltage Source
No, it doesn't quite work like that. LTspice doesn't know a priori when a waveform will touch a certain voltage. It solves each point in time independently, and then guesses what the next time point
By Tony Casey · #160424 ·
Re: Oddity in Behavioural Voltage Source
I think? you understand LTspice correctly, but you may not understand the amplifiers you used. The clipping amplifier, U2, does not respond until its input signal V(BufferOut) crosses the input
By Andy I · #160423 ·
Re: Oddity in Behavioural Voltage Source
Hi John, the odd setup is from the fact that I had played with different op amps, the first acting as buffer and the second doing the amplification. The op amp in the schematic is not unity gain
By joerg · #160422 ·
Re: Oddity in Behavioural Voltage Source
Thanks Tony, that does the trick! But I'm still confused about the inner workings of LTSpice then: If I define a voltage source to behave like a function of another voltage, shouldn't the timing of
By joerg · #160421 ·
Re: Oddity in Behavioural Voltage Source
It all seems to work as expected. But you first divide the input signal voltage by 100, then multiply by 21, then multiply by 51, which seems an odd thing to do . The output is a 20 V peak-to-peak
By John Woodgate · #160420 ·
Re: Oddity in Behavioural Voltage Source
Thanks John, and sorry for the inconvenience. Here are the files: /g/LTspice/files/Temp/BehaviouralVoltageSource.zip (
By joerg · #160419 ·