Is this really what you'd expect from an audio balun
On Tue, 7 May 2013 03:46:38 -0700, "William Sommerwerck"
wrote:
Construction of these transformers doesn't have to follow the normal
rules. They don't need good linearity, so very high permeability
ferrite can be used for the core in order to get a high inductance
value. This is because the audio doesn't have to pass through the
ferrite, it bypasses it.
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I know of no transformer type in which the signal "passes through" the core
material.
Nit-picking the terminology? In a transformer, the core is used to
couple the signal from the primary to the secondary. In this sense the
signal "passes through" it. In the series balun the only signal that
interacts with the core is the unwanted common mode or single sided
signal. This is generally of such a low value that it has no chance of
causing sufficient field strength to cause non-linearity.
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