upand_at_them
Active Member
I have a Polar heart rate monitor and found this online: **broken link removed**
But I don't have a MAX4169. I do, however, have a bunch of 741 Op-Amps.
I'd first like to try the author's approach of using a loop of wire as an antenna. The author used an oscilloscope, which I don't own, but I was using my Parallax Opta-scope and I think it wasn't sensitive enough. Is there any way I can improve this?
It would be cool if I could see the signal on my Opta-scope and then try to work through using an Op-amp to boost and clean up the signal without just copying that circuit and not knowing how it all works.
Mike
But I don't have a MAX4169. I do, however, have a bunch of 741 Op-Amps.
I'd first like to try the author's approach of using a loop of wire as an antenna. The author used an oscilloscope, which I don't own, but I was using my Parallax Opta-scope and I think it wasn't sensitive enough. Is there any way I can improve this?
It would be cool if I could see the signal on my Opta-scope and then try to work through using an Op-amp to boost and clean up the signal without just copying that circuit and not knowing how it all works.
Mike