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  1. zmoose

    Shannon Limit on 64 QAM

    I have a simple qusetion regarding how to interpret Shannon's limit. I am looking at this for fun and am not a system/theoretical engineer so please excuse my errors as I'm sure there a lot. I believe Shannon's limit can be written as: Capacity =log2(1+Br/Wn * Eb/No) where Br is...
  2. zmoose

    Using Buck Converter to regulate from 120V to low DC

    I have been wondering why people don't use a buck converter (switched regulator) to go straight from 120V to a lower DC value, like 12V or 5V. Most conventional power supplies use a transform to go to a lower intermediate voltage and then use a switched regulator to get the desired regulated...

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