Re: K2/100 - Power investigation
Posted by
Vic K2VCO on
Jan 14, 2008; 3:48pm
URL: http://elecraft.85.s1.nabble.com/K2-100-Power-investigation-tp458672p458680.html
Vic K2VCO wrote:
>
> Be careful if you use this method! I learned the hard way (destroyed
> THREE probes) that the voltage rating for scope probes goes down as
> frequency goes up. There is a little piece of paper that comes with the
> probes; look at it, compute the voltage across your dummy load at the
> power levels that you will be testing (100 watts is about 70.7 volts),
> and make sure that the probe can handle it at the frequency of interest.
I should have said 70.7 v RMS; the peak voltage will be 1.414 x 70.71 =
100v, which means that the peak-to-peak voltage will be 200v.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco_______________________________________________
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