You would probably find the work by Alan Payne interesting. Add "ferrite" and google

I re-selected the same part you used, on the output cap.

I just picked the same cap again. It looked like the data was damaged. K1FZY was my father

The output cap has some issues (other than being fantastically expensive!) I pulled down your files, re-selected the cap to the same part, and it seems fine now.

Solar cells and batteries are relatively complicated to simulate in much detail. Batteries especially as they are chemical reactions that depend on applied voltage, current temperature, recent charge/

It does not look like your zener is connected to the wires.

For those interested, google "Alan Payne Ferrite".

Well, in my application the antenna IS a transformer. The drive winding of a few turns couples to a resonant tank which is a very high Q circuit. (400+) The drive voltage is 2.7V, and the secondary vo

Ferrite rod cores for low frequency antennas.

For ferrites, I've often found values near 0.7 give results similar to reality. FWIW Fractional turns dont exist in real life, but that last turn is usually very poorly coupled. Think of it this way:

Something else that might not be obvious: In LTSpice resistors have polarity, If you put 1V in series with 1 ohm you'll get 1A, but the sign on the current through the resistor might be inverted. Just

One trick I've used is to create a ramdisk (yeah that's still a thing) and run LTSpice there. It helps when you have 128G installed. :) I have some sims that I use which create LARGE files, and while

I could send you a working version

I used perfect switches and pulse generators with time delay. Also good for N-Path filters.

It's worth noting that all simulations are lies. Perfect components are the most misleading. As you add the imperfections to your model, the sims get closer to reality, but it seems like there's alway

I would be interested in seeing it

A large capacitor is not a horrible starting point. Put some impedance in series which varies according to voltage and temperature and history (not so easy..)

Simulating batteries is complex. I would recommend a read on your chemistry at Battery University online, and in the McGraw Hill Handbook of Batteries. Batteries also don't like to be accelerated. Spe

I will have to wait till I have more time, work and fam.. :)

"Are you saying this is definitely a swept-frequency spectrum analyzer? Or definitely an FFT?" Seems it does both. https://www.ntecusa.com/docs/5990-4327EN.pdf