If I want a very simple, rough approximation of how a transformer will work in LTspice simulation, it seems like a few inductance values and resistance values would be a good starting point, but if I don't physically have a transformer and the tools to measure it, I don't know where to start in estimating those values.
I know how to add the inductors, couple them, and set their values, but I have no idea what the values should be. Right now I want to simulate a circuit running off of this transformer: http://catalog.triadmagnetics.com/Asset/FS12-090-C2.pdf
It takes 115VAC and outputs 6.3VAC (depending on choice of serial/parallel connections.) This is a turns ratio of roughly 18.25:1. I know you square this to get an inductance ratio of around 333:1, but where should I set those values? If I make them to large I get a transformer capable of seemingly infinite power transfer, with inductive spikes to match! Too small and I can't get any power out of it. I haven't the faintest idea what a reasonable value would be.
1H:333H?
1kH:333kH?
1mH:333mH?
As you can see, I'm not looking for precise accuracy, more like getting within the right order of magnitude - very ballpark. When you make such a guess, what's it based on? VA rating of the transformer? Physical size/weight of the transformer? I'd love to make reasonable estimates like this in the future without coming here begging for help, so I'm more interested in your thought process (or links to external resources I've failed to find in my own searches,) than in just having the answer for this one specific transformer.
Thanks!
I know how to add the inductors, couple them, and set their values, but I have no idea what the values should be. Right now I want to simulate a circuit running off of this transformer: http://catalog.triadmagnetics.com/Asset/FS12-090-C2.pdf
It takes 115VAC and outputs 6.3VAC (depending on choice of serial/parallel connections.) This is a turns ratio of roughly 18.25:1. I know you square this to get an inductance ratio of around 333:1, but where should I set those values? If I make them to large I get a transformer capable of seemingly infinite power transfer, with inductive spikes to match! Too small and I can't get any power out of it. I haven't the faintest idea what a reasonable value would be.
1H:333H?
1kH:333kH?
1mH:333mH?
As you can see, I'm not looking for precise accuracy, more like getting within the right order of magnitude - very ballpark. When you make such a guess, what's it based on? VA rating of the transformer? Physical size/weight of the transformer? I'd love to make reasonable estimates like this in the future without coming here begging for help, so I'm more interested in your thought process (or links to external resources I've failed to find in my own searches,) than in just having the answer for this one specific transformer.
Thanks!