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利用L4981B的性能进行频率调制
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2009-05-31
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Designing PFC, an important parameter to consider and control is the high frequency noise. This noise is produced by the switching itself and its
level depends on several parameters such as high frequency current ripple, PCB layout, active switch performance and also some particular circuital
solutions.
The parameter to keep under control is the electromagnetic interference (EMI) content, versus the RFI norms and design requirements (EN60555 and VDE0871B). To get more information about this, please refer also to the CIRCUIT FOR POWER FACTOR CORRECTION WITH REGARDS TO MAINS FILTERING (AN510).
level depends on several parameters such as high frequency current ripple, PCB layout, active switch performance and also some particular circuital
solutions.
The parameter to keep under control is the electromagnetic interference (EMI) content, versus the RFI norms and design requirements (EN60555 and VDE0871B). To get more information about this, please refer also to the CIRCUIT FOR POWER FACTOR CORRECTION WITH REGARDS TO MAINS FILTERING (AN510).
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