07-14-14 14:36 Mike Luther wrote to Tom Walker about UPS Clicking-Report   
      
    ML> @MSGID: <53C50502.13042.windowsa@capcity2.synchro.net>   
    ML> @REPLY: <53C45539.13037.windowsa@capcity2.synchro.net>   
      
    TW> The ones I am thinking about have NO switchingy. They run all the time   
    TW> on the battery and the function of the line power is only for battery   
    TW> charging. So NO frequency matching is not needed when line power is   
    TW> restored.   
      
    ML> True.  But also be careful about one other thingee!  The good   
    ML> UPS stuff does use sine wave AC output.  However, some of   
    ML> these, per my recall, use triangular wave form output.  Or was   
    ML> it square wave form output?.  Been a long time back, can't be   
    ML> sure I've got this exact.  I forgot to mention that in my   
    ML> original post(age) here.  Age creeps into even postal work!   
      
   Howdy! Mike,   
      
   I looked at the Specifications for the BCPERS300, when it is running   
   on Battery it delivers a PWM sine wave to the gear connected to it.   
      
   Also learned that my UPS is called a "Standby UPS System".   
      
   ... It's only a hobby ... only a hobby ... only a   
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