Help needed ! Explainary for the Comparator circuit. Urgent!

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AlvinTan

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Hi all,

can anyone explain to me how this comparator works? with formulas? any recommendation on which type of softwares suitable to simulation this circuit?

Thanks.

 

There doesn't seem to be much that can be said about it. The CA311 is an equivalent of the LM311 I assume. R128 & VR103 form a potential divider between the +12V and GND to set the threshold voltage on the inverting input. The pullup R129 gives a 5V output (the comparator output is open collector). The strobe pin (6) would normally be left open if the strobe function is not used rather than connected to +12V.

What do you not understand about it?

Keith.
 
with ur explaination, it seem much clearer. appreciated with much thanks.
 

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