Primary winding on X transformer symbol

[rgaddi]

I’m new to QSPICE and trying to set up an isolated converter, and couldn’t for the life of me figure out why my simulation wasn’t even remotely working. The answer was I had managed to flip the (4 coil) transformer symbol horizontally and, since the symbol is symmetric, I couldn’t tell.

It would be great if there was some kind of visual marker on the symbol for which coil is the primary, since all of the parameters are relative to that one. A little P next to the dot, something like that.

[KSKelvin]

You can identify the pin from symbol properties, refer to below example in highlight ×1 PRI+ pin.
As Qspice standard symbol may not meet everybody taste, a simple way to resolve it is to build your own library. I have alternative Qspice symbol in my symbol library. Here are 6 ×-Device (transformer) with winding label, and inversed secondary.

Qspice/Symbols/qspice-alternative at main · KSKelvin-Github/Qspice