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good OP AMP circuit

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Hasnom

New Member
Hi! Everyone...

I got a project to make a circuitry using OP AMP. I am currently in 4th semester Electronic Engineering...

Kindly give me some good and different Ideas or circuits which I can make....
 

redsox123

New Member
Dark activated switch

I just recently made a circuit using an op-amp as a comparator. One input i had a steady +5V and on the other input the voltage would change based on a photo resistor. When the photo resistor went below +5V the output of the op-amp would go high. This was then used to activate a transistor. I just made it turn on an LED but you can connect the transistor to whatever you would like. Ill try to put up a schematic tomorrow.
 

Hasnom

New Member
Thanks for the reply....

It will be great if you can put the schematic here...

What do you say about Light Listener?
 

ericgibbs

Well-Known Member
Most Helpful Member
Hi! Everyone...

I got a project to make a circuitry using OP AMP. I am currently in 4th semester Electronic Engineering...

Kindly give me some good and different Ideas or circuits which I can make....

hi,
Look at this pdf, it has a large number of useful circuits for OPA's.:)
 

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