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Old 6th Apr 2019, 8:13 pm   #6
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,902
Default Re: What are these transformers?

Could also be line isolating/matching transformers for things like 600 Ohm phone lines etc.

The first step is to use an audio generator and scope to measure the ratio(s) and then measure the bandwidth.

David
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