Cn / En
Case reference

EMC solutions

Debugging example 5

Aug 08,2019

Debugging item: space radiation

Countermeasure analysis and solution description


1. Chnage the place of ferrite bead from MOS tube's middle pin to its S pin. 

    Contact a ferrite bead in series with the tube foot of the rectifier bridge.

    Add a piece of copper foil to DC end.


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Radiation testing data after debugging



Testing data in horizontal direction after radiation debugging at 120V:


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Testing data in vertical direction after radiation debugging at 230V:


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Testing data in horizontal direction after radiation debugging at 230V:


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Testing data of zero line after conduction debugging at 230V:


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Testing data of live line after conduction debugging at 230V:


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Testing data of live line after conduction debugging at 120V:


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Testing data of zero line after conduction debugging at 120V:


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