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Hi Andy, Thanks for the suggestion - I'll take a look at that example and the built-in LPNP model. Your point about the antiquity of the device is well-taken. I'm working on learning some more

Trying to get this opamp model to work. I keep getting errors. I know it has to do with the "TABLE" lines, but not sure how to fix. Model was pulled from OnSemi's website. File is posted in the temp

If I were to do this, I would use something like the one suggested by Donald.? I prefer it because I think it is easy to visualize how it gives you the? varying duty cycle, and it might be close to

Manauo, Have you looked at this schematic, that comes with LTspice? I don't know how it compares to your efforts, but it is another one to consider.? I'm guessing that one just copied the

Edit: Schematic is uploaded in files/temp, "741.asc"

Hi, I'm sure this has been asked before but in searching I couldn't find anything that addressed my issue, so apologies if this is a duplicate. As an exercise I'm modeling the 741 op-amp internal

Hi, : Here is a reference demo for MPPT, https://www.analog.com/media/en/simulation-models/LTspice-demo-circuits/LT8611_LTC4412_MPPT.asc Thanks to the ADI's kindly sharing. Help to utilize the

Hello, What are your panel parameters (Vov, Isc, Vmpp, Impp etc.)? What kind of algorithm are you using (Perturb and Observe (PnO), Incremental Conductance (InC) etc.)? What is your MPPT frequency?

The "left" part of the I-V curve with the current load is physically unrealisable because it requires the rail Vpv400W to go negative. This can't happen with a resistive load. Try adding the "LOAD"

Hi, : This may also enable your joy ,similar to the website. By sample & hold. Wish you happy. Version 4 SHEET 1 1224 680 WIRE 128 64 32 64 WIRE 336 112 304 112 WIRE 128 160 64 160 WIRE 32 272 32 64

I've uploaded /g/LTspice/files/Temp/DutyCycleModulator.zip which uses a switch, a ramp, and a triangle voltage to approximate your desire. Donald.

Hi, I am trying to understand how MPPT works in a buck converter with resistive load by doing an LTSpice simulation. I have a PV model which works very accurately with a current sink load. And it

Hello, I am fairly new to LTspice, so my suggestion may not be the best way to go about implementing what you are looking for. However, can the following trick help you? PWL(repeat forever 0 0.01

Dear Dennis, A very good day to you. Again thanks a lot for explaining the insights on how to use .meas intelligently. I am grateful to you, teacher. I looked at figure 5 of the white paper carefully.

Hi, I am trying to create a duty cycle that kind of continuously varying like in a 200ms simulation I want a duty cycle start from 0.01 to 0.99 ?(approximately 0.01 Duty increase per 2 ms). How can I

Hi All How can one restore the Classic Menu in LTSpice Version 24.1.6? Regards ik

That might be so, but I personally doubt it.? Just my opinion. That might be why these UniversalOpamp models lack any explicit provision for Rin(CM).? It seems to have been ignored - even though its

Yes and no. They were re-packaged with altered symbol and model names.? But as far as I know, the innards of each of the models themselves were unchanged by ADI. Andy (

Weren't these models changed soon after AD took over? -- This email has been checked for viruses by AVG antivirus software. www.avg.com

It seems as if whoever designed these Universal Opamps gave no thought whatsoever to a common-mode input impedance.? Not one of them has a parameter for that. If you ground either input pin and