XPost: sci.electronics.equipment   
   From: robertbaer@localnet.com   
      
   James Wilkinson Sword wrote:   
   > On Thu, 28 Dec 2017 03:56:51 -0000, Robert Baer   
   >  wrote:   
   >   
   >> rickman wrote:   
   >>> James Wilkinson Sword wrote on 12/11/2017 11:50 AM:   
   >>>> On Mon, 11 Dec 2017 04:07:43 -0000, Mary-Jane Rottencrotch   
   >>>>  wrote:   
   >>>>   
   >>>>> On 2007-01-19 12:13, Peter Fucker wrote:   
   >>>>>> Is it really true that turning on a microwave with nothing in it will   
   >>>>>> break it?   
   >>>>>   
   >>>>> Derp.   
   >>>>   
   >>>> It was a sensible question.  This could be done by accident.   
   >>>   
   >>> I interviewed with a place once that was doing something with testing   
   >>> microwave ovens.  They ran them all the time with nothing in them.  I   
   >>> had always read that you should not operate them with nothing to absorb   
   >>> the energy and mentioned that.  I got a strange look from the guy.   
   >>> Obviously the energy that would be absorbed is within the limits of what   
   >>> the ovens were designed to get rid of.   
   >>>   
   >>    STUPID!   
   >>   
   >>    Microwave ovens *generate* (microwave) energy and cannot "get rid" of   
   >> any of that.   
   >>   
   >>    It boils down to how much of a load mis-match (SWR) can the magnetron   
   >> ("maggie") tolerate.   
   >>   
   >>    Nothing will "break", but the maggie may burn out.   
   >   
   > There is a block to absorb the energy that comes back.  It should have a   
   > thermal cutout on it.   
   >   
      NOTHING to "absorb", IF there is a thermal cut-out that is a BIG clue   
   to that fact.   
      
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