When you can model? Listening is so 60's.
Your post inspired me play with this as it actually didn't seem like it would be very difficult to model. I was ready to send you a post along that line when it occurred to me that I'd never actually done an electrostatic model with FEMM so figured maybe I'd wait for the weekend and actually try it.
I'm not sure if this is the sort of geometry that you guys were talking about, but it is one that I'm considering using so I guess you can see where my priorities are. This is two pieces of ~1/8"OD teflon tubing (Alpha TFT 200-9) almost touching with 28AWG wires lying on their bottoms.
I'll attempt to attach a picture. They say it's gotta be less then 640x480 so it's going to be fuzzy but you can see the potential lines and the color is the flux density. I'll email a clear one if you want to see it better. To finish up I need to integrate into the page and come up with the capacitance and effective dielectric constant, but I think I'm going to stop here. I want to look at just taping the wires to the outside of a single tube or just plain poking them down the spaghetti like a normal person.
Anyway, food for thought. The software is free and eats up about a weekend to get the hang of. I have used it before for magnetic modeling but had blessedly forgotten most of the oddities in it's UI. While this is my first shot using it for an electrostatic problem I liked it for magnetics. I compared the results with both another program and with the actual measured fields on real live loops and after fussing around with the ever-changing magnetic units to get something I could understand, Webers/furlong^2, they all matched beautifully.
Regards, Rick
