And, I might add, it is ALWAYS worth checking that we have done it right simulate the wrong circuit and it will tell you lies. The Rule is: if we can correlate the junctions of our components with those of the real circuit, we are accurately representing the physical circuit. Sometimes we have to bend and squeeze things to get it into a format that our simulator will accept, which leaves us wondering whether we are working with an accurate representation. 1ģ Which all might seem trivial, but is a good reminder right at the beginning that we are creating a virtual representation of a physical circuit. Which I m sure is topologically the same as a cube. Then I wired two sets of four into squares, then connected the remaining four between the corners of the squares. Figure 1: resistor cube schematic All I did was select resistance in the left hand component window and paste them down, rotating as necessary, until I had twelve on the schematic. Here is my attempt to make a cube in Qucs anyone is welcome to try and improve it. What is the resistance between opposite corners of the cube? The intention may have been to teach soldering, as more than one student solved it by making just such a cube! These days we can do that without touching the soldering iron we simulate the circuit. 2 DC Static Circuits A favourite question in electronics courses used to be: You have twelve one ohm resistors you connect them together so that each resistor lies along the edge of a cube.
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