Op amp based projects suggestion

[MrOmnos]

So, we were taught op-amps last semester. I understood the theory quite well and I did great in the tests. I didn't touch the books in the summer holidays and after 2 months it seems I have forgotten most of the theory. So, I thought best way to revise and memorize the theory is to do some projects. Please suggest some cool projects based on Op-amps which will require me to revisit the theory and do the calculations. I learn better by doing things.

[ChrisGreece52]

Hey i found not long ago this sine wave generator using op amps http://www.play-hookey.com/analog/generators/sine_wave_generator.html you can get a dual one and build it it does not take much time and its a good project for starting using op amps.
You could also build a comparator http://www.circuitstoday.com/voltage-comparator but as i was suggested in this right forum you better buy a real comparator if you are going to use it for a project

Hope i helped you

[TerminalJack505]

Grab a copy of this PDF to get some inspiration.

Some other ideas:

• Constant current source.
• Constant current sink (Dave's dummy load, for example.)
• Voltage regulator.
• PWM generator (better to use comparators, though.)

[Lightages]

Build a headphone amp as a starter. Then maybe a VLF radio receiver and listen to some weird signals. Try designing a microphone amp. So many things to try.....

[AlxDroidDev]

Grab a copy of this PDF to get some inspiration.

That is one great source of info on Op Amp projects. Thank for that.

[Synthetase]

Plenty of them here (although most are to do with audio).
I recommend building this as it's an incredibly useful piece of kit for easily playing around with opamp circuit ideas.