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What is cmr?

Answer Posted / Sanjeev Saxena

CMR stands for Common Mode Rejection Ratio, which is a measure of a transformer's ability to suppress common mode noise (noise that is present on both legs of the primary and secondary winding). A high CMR value indicates that the transformer is effective at isolating the two legs from each other and rejecting common mode noise. This is important in many electronic circuits, especially those that are sensitive to interference.

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