[Ralph] is worked up about impedance matching, and why not? It is very important match the supply and cargo impedance to get probably the most energy out of a circuit. He’s acquired an entire sequence of movies about it. The newest? Matching utilizing a PI community and the venerable Smith Chart.
We like that he makes every video self-contained. It does imply when you watch all of them, you get some overview, however that’s not a foul factor, actually. He additionally does a terrific job of outlining easy ideas, akin to what a fancy conjugate is, that you simply might need forgotten.
Smith charts nearly appear magical, however they’re actually kind of an analog pc. The colour of the road and even the route of an arrow make a distinction, and [Ralph] explains all of it very merely.
The instance circuit is easy with a 50 MHz sign and a mismatched supply and cargo. Utilizing the steps and watching the examples will make it simple, even when you’ve by no means used a Smith Chart earlier than.
The crimson strains plot impedance, and the blue strains present conductance and succeptance. As soon as every part is plotted, you must discover a path between two factors on the chart. That Smith was a intelligent man.
We checked out half 1 of this sequence earlier this yr, so there are 5 extra to look at since then. In case your take a look at gear leaves off the signal of your imaginary element, the Smith Chart can work round that for you.
