First, I was wondering if it's possible to ballpark transformer ratio with DCR figures the same way you would calculate it with impedance ratios. I've tried it with a couple of transformers where I know the turns ratio, & it seems to get relatively close, but I don't know if this would work with transformers in general.
Second, I know that you can often guess the impedance of a winding if you know its DCR (eg, 600 ohm windings tend to measure 30-40 ohms.) Is this a pretty consistent thing, or does it vary with other attributes of the transformer? Would a 600 ohm winding on a smallish line input xformer measure about the same as a chunky 600 ohm output transformer?
Tom
Second, I know that you can often guess the impedance of a winding if you know its DCR (eg, 600 ohm windings tend to measure 30-40 ohms.) Is this a pretty consistent thing, or does it vary with other attributes of the transformer? Would a 600 ohm winding on a smallish line input xformer measure about the same as a chunky 600 ohm output transformer?
Tom