Author Options:

What all are the cool sensors you could make with an op amp lm 741?.I was planning to make some sensors for fun!? Answered



You can't make "sensors" with an op-amp - you should fix your question tags, op-amp is one concept.

You CAN connect sensors TO a 741, but it won't "sense" anything without them.


op amps "comparator " function seemed to me as a tool to make sensors!
yes op amp itself is not necessary.but could u provide some nice stuff to build from op amps!

Like I said, it will condition the output of a sensor, perhaps by amplifying it, then comparing it against a reference, but WHAT will it sense ?


thank u for the link.but what i meant was to use op amp as a tool in making sensors not entirely depending on its functions! like its comparator functions!

Sensors for fun eh?
I guess that if you had a conductivity-sensor which you could place on a person's body you'd get a positive if they got moist, by sweating for example.
That's not too hard, Darlington transistor.