Karolina_1
Member level 3
Hi friends, I wanted to build one circuit from an article but i cant understand it. I think its a active low pass filter but i am not sure. Can someone help me figure out what kind of filter is it. Its a very strange filter indeed. I tried simulating but i couldnt arrive to a logical answer. (Bode plot, AC frequency analysis)
* Why he put 3V reference to the input. Is it going to be 3V. When i built it in real life it wasnt 3V in the positive input of the opamp.
* Connecting the outputs of the the two opamps also seemed illogical.
Its said to be one pole/one zero active filter in the description. Thats all what is known.
Can someone help please
* Why he put 3V reference to the input. Is it going to be 3V. When i built it in real life it wasnt 3V in the positive input of the opamp.
* Connecting the outputs of the the two opamps also seemed illogical.
Its said to be one pole/one zero active filter in the description. Thats all what is known.
Can someone help please