Thread
:
Northstar 8000 W Honda generator, feedback
View Single Post
#
14
Larry Caldwell
Posts: n/a
In article ,
(Chris Szilagyi) says...
According to the catalog specs for the Northstar 8000, it has "6%
total harmonic distortion for use with voltage-sensitive equipment
like computers...". I am assuming this means the voltage swing is
around 6% as you mentioned for regulated units.
No, THD is a measure of harmonics distorting the mathematically pure
sine wave. Through Fourier transforms, you can describe any wave form
as the sum of a perfect sine wave and its odd and even harmonics.
Getting within 6% of a perfect sine wave is pretty common for any
rotating field brushless generator. No regulation required. The THD
says nothing about the stability of frequency or voltage.
--
http://home.teleport.com/~larryc
Reply With Quote