XPost: sci.electronics.equipment   
   From: imvalid@somewear.com   
      
   On Sat, 30 Dec 2017 05:42:00 -0000, Robert Baer    
   wrote:   
      
   > 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.   
      
   Bullshit.  The absorber could overheat, requiring a thermal cutout.  Selling   
   something to Joe Bloggs in the general public and allowing it to break by   
   simply forgetting to put food in it is irresponsible.   
      
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