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Posted to rec.crafts.metalworking
Michael A. Terrell Michael A. Terrell is offline
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Default 12 v. power source


wrote:

And MANY of them are also totally unregulated and unfiltered. I've
measured in excess of 18 volts open circuit, with over 4 volts AC
ripple. Some are even only HALF WAVE regulated.



How do you 'half wave regulate' something?