Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
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"?
Good Luck1Posted 11/12/2012