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How does a voltage comparator work? very simple explanation I need..

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KAS90
#1
Nov30-08, 08:19 AM
P: 23
Hello every1..
I would like just sum help in unerstanding how a voltage comparator works..
I tried to read journals.. books.. but till now, I feel so lost..
can someone just give me a simple explanation of the SIMPLEST voltage comparator? sumthing to help me get on with it...
I'd appreciate that a lot..
i will help me with my project, as I'm running out of time..
thanx a lot in advance..
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dlgoff
#2
Nov30-08, 09:44 AM
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A standard op-amp operating without negative feedback can be used as a comparator. When the non-inverting input (V+) is at a higher voltage than the inverting input (V-), the high gain of the op-amp causes it to output the most positive voltage it can. When the non-inverting input (V+) drops below the inverting input (V-), the op-amp outputs the most negative voltage it can.
Comparator

Can't think of any simpler way to say it.


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