I am starting a new topic, targeting high frequency PCB design. The Gerber Viewer will be a base for it. But for now, my targets are more abstract and more related to general electrotechnic or electromagnetism. I have already realized that the equation system solving is going to be the main difficulty, due to the size of the unknown variable set. So I am learning.
My first milestone, I am happy to share, is a 2D resistance solver, which could be used to calculate the current flow and voltage build-up on a PCB trace or plane.
This simple program reads a bitmap (e.g. png) representing the PCB copper shape (white), test electrodes (red and blue) and performs 2D resistance calculations.
The result is a current density map and a voltage drop map (animation). Moving mouse pointer over the image gives the numerical output in the actual point.
The program also shows the total resistance value, between the 2 terminals.
To keep it simple for me, all values are to be scaled to the particular physical constraints.
I assume the resistance of the 2D square, perfectly connected at the opposite edges, to be 1.
I also assume that the voltage across the test points is also 1. The software is to be download in two versions. 32-bit and 64-bit.
The reason for this is that the equation solving part, for now, is a straightforward Gaussian elimination, suitable only for relative small amount of variables,
limited by n² storage requirement. To make it a bit better, 64-bit version can access much bigger memory, available now on the standard PC.
The program starts with preloaded demo.
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