Hi, for a didactic project (this one: http://forum.allaboutcircuits.com/threads/triangle-wave-generator.109269/#post-840873 ) I need a rail-to-rail op amp, eg an LT1498 or a TLV271: the problem is that in the electronic local stores I am unable to find these op amp; I've found them on Digikey, Mouser and on Ebay, but in the first two online shop I have to achieve a minumum order (and the shipping cost is expensive) and on Ebay (with free shipping) these ICs costs about $7 for a single item, which, honestly, is too much by my point of view.
So: considering the circuit: http://forum.allaboutcircuits.com/threads/triangle-wave-generator.109269/#post-840873
There is a way to replace the rail-to-rail op amp with another common op-amp? Or can I achieve the same result using some transistors? Or, again, there would be an alternative circuit using common components to achieve the same triangle wave generator?
Consider that this project is just for study purposes and for fun, since I also want to take confidence with an oscilloscope software which I've bought.
Kind regards.
So: considering the circuit: http://forum.allaboutcircuits.com/threads/triangle-wave-generator.109269/#post-840873
There is a way to replace the rail-to-rail op amp with another common op-amp? Or can I achieve the same result using some transistors? Or, again, there would be an alternative circuit using common components to achieve the same triangle wave generator?
Consider that this project is just for study purposes and for fun, since I also want to take confidence with an oscilloscope software which I've bought.
Kind regards.