HI,

I'm testing a product that's switching at 50 kHz, modulated by a 1 kHz 
signal.

I'm getting a great deal of noise between 9 kHz to 13 kHz, I think is 
related. Specifically, it goes when I stop the modulation... Any ideas on 
ways to clean this up. Filtering seems to be effective, but HUGE!

Thanks,

Derek N. Walton
Owner,
L. F. Research EMC Design and Test Facility
12790 Route 76,
Poplar Grove,
IL 61065
www.lfresearch.com

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