Robert Bruninga via EV wrote:
Was just reading a DC Power supply article and it casually mentioned the
benefit of moving to higher frequency for DC/DC convresion in not only
efficiency, but also, by being above 2 MHz, there are no harmonics in he AM
band.
Nice to know they are thinking about it.
Good to know they are thinking about it. But even if the frequency is
above 2 MHz, you still get noise in the AM band. The frequency is
usually modulated to regulate the supply; and that will create
subharmonics in the AM band.
Besides that, modern cars are already incredible noise sources. Tune an
AM radio between stations, and just listen to all the pops and buzzes as
you turn things on and off.
AM radio would be nearly useless without those 50,000 watt broadcast
stations.
--
Whether we or our politicians know it or not, Nature is party to all
our deals and decisions, and she has more votes, a longer memory,
and a sterner sense of justice than we do. -- Wendell Berry
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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