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Below are all of the forum threads, including all
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Post subject: Comparator circuit Posted: Wed Oct 05, 2005
I am new in circuit designing, i have to design a circuit
that compares a -ve and a +ve input and gives +ve input at the output
only if the -ve input is -5V, otherwise 0V at output. How can i do so
Post subject: ComparatorPosted:
Wed Oct 05, 2005 3:46 pm
With computers, you can sometimes actually
say something like "if the -ve input is -5V" and have it mean something.
In the physical, analog world, equality is only a concept - there's
always noise, which makes equality testing impossible and essentially
meaningless. (For example, what should the circuit do if ve is -5.0000001V?
It's not really equal, but it's not very far off, either).
you really mean "if the -ve input is less than -5V"?