In a message dated 9/3/2003 5:56:51 PM Eastern Daylight Time,
kelly@thejohnsons.ws writes:
> I'm planning to do some rover operations and need a power inverter to run
> my laptop. I could use advice on selecting a power inverter that won't
> generate large amounts of RFI. Any advice?
>
Don't even think about using an a 120 volt AC inverter to power your laptop's
120 vac power supply (either external or internal to the laptop).
I, and several friends, have had good luck with a "car adapter" to supply
whatever DC voltage the laptop needs. In my case, with an older IBM ThinkPad,
that is about 18 volts. I found such an adapter on eBay for around $30.
One important trick: power the car adapter from a separate battery. The car
adapter powered from the car's electrical system was still noisy; from a
separate battery, very quiet.
73 - Jim K8MR
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