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Window detector working

  1. Apr 3, 2009 #1
    I am having a problem understanding the window detector ckt using a high precision comparator LM1414. Suppose Vut =7,Vlt=2 and if Vin=8,then C1 will be negatively saturated & C2 will be positively saturated , when I think both should be negatively saturated.

    Searching on the net I came across this circuit of Window Detector using IC741 & the difference between the 2 ckts is that 741 ckt contains 2 extra diodes.I understood the working of the ckt using 741 …so I was wondering if they forgot to place diodes in the LM1414 ckt or the diodes already present in the LM1414 or is it something else that I cant see?
    fcom.jpg

    f2.JPG
     
  2. jcsd
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