Transformers
Hi Gandledorf,
Actually, impedances in transformers (mostly audio tansformers) indicate a function of voltage and current... that's about it. Altho at 1st, it may be a bit difficult to grasp these concepts, it is similar in a lot of ways to the understanding of DC circuits. Again, DC circuits use voltage and current in certain operating conditions. When it comes to audio (or AC), these fundamental principles still apply, but with certain caveats, such as reactances to certain frequencies and such. That's about the only differences between AC and DC. Remember- audio is considered "AC".
As to yer question about a 1kCT, 2kCT being exactly identical to 10kCT, 20kCT transformer, that would probably only be accurate in terms of what we call "Ratio". Again, impedances, such as the ones U'd mentioned, are different than ratios. Altho we do use them togeher sometimes, as in, to determining the turns ratio of primary to secondary of a transformer.
On the other hand, I may not fully understand yer question as to using the different imedance taps (also expressed in ohms) on a transformer.
Again, I assume U are referring to an audio transformer. I can tell U, that if U have a transformer with an impedance of, say, a 1KCT (1000 ohm with center-tap), either primary or secondary, this would be the impedance (NOT the DC resistance) across the entire winding- disregarding the center-tap. Now if U regard the center-tap in this case, then the impedance would be 500 ohms from either side of the end windings to the center-tap. Clear as mud now? (hehe)
In terms of comprehending how impedance (in ohms) works, it might help U to understand how resistors work. There are basic similarities, but then there are some "Got'chas" too. But both are perfectly explainable... just not in this short of space tho. Hope this helped U a bit. Lemme know.
Cheerz!
Bob
bob4analog@yahoo.com