At 11:22 AM 6/29/2008, you wrote:
I just use the car/flight adapter plugs.
One problem I wish to avoid is RF interference. It was a problem on my last
boat when i was using a small inverter to power the computer. If i wanted
to use the HF radio the whistles and humms were bothersome and at times
overpowered weak signals.
I believe that most auto adapters are small inverters, if you plug the
brick into them, and voltage multipliers if you go directly to the computer
from them. Both are electrically noisy. One specification that is lacking
on any of the inverters and voltage multipliers I have looked at was
RF output. One would hope the better ones have less of it.
Thanks to all who took part in this enlightening discussion. This is what
I have learned.
Pure DC is rarely so. And when it is not it can be destructive.
My reluctance to use an inverter is based upon a false assumption.
DC-DC power supplies are less efficient than a well designed "pure sine
wave" inverter.
Only to the ignorant and the deeply enlightened are all things simple.
The simple solution for a man of my profound ignorance and addiction to
technology is to use the 600w pure sine wave inverter I have already
installed. If RF is a problem, deal with it with chokes and shielding as
necessary.
Thank you all.
Philip
"Be the change you want to see"
Philip & Marilyn Lange
AE4OV & KD4JRC,
ORYOKI
Witness 35 Catamaran
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