"As you probably know if you've been shopping for cables, coax for most video applications is "75 ohm" coax--but what the heck does that mean, anyway? This article is a short, non-technical explanation of impedance, and its significance in video and other circuitry, for those who have always scratched their heads at this one."
And no, impedance is not something that you take Viagra for. :wink:
What is Impedance?
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