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SMPS Regulation and efficiency

Switching waveforms < > EMC noise
Below is an example of an exam form (Bias = auxiliary winding voltage)

Check if the output voltage is within the specified range.
Check if the power supply efficiency is at the expected value.
A graph of the efficiency values would be helpful visually.

Auxiliary winding voltage Advice

Some IC functions use an auxiliary winding, so it is better to check the auxiliary winding voltage.

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