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Coil polarity in Bipolar Current sense transformer?

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cupoftea

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Hi,
I saw a winding spec for a bipolar current sense transformer (50:1) used in an LLC converter. It was pertaining to the polarity of the primary and secondary coils. Why do they bother with that? In a bipolar CST, it doesn’t matter which way round the bobbin pri and sec are wound.
 

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It doesn't matter if the secondary is being rectified to just detect the absolute value of the current. There are many other feasible uses for a CT in an LLC converter though.
 
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