Hi. I am student doing some research work , I am stuck in something. I want to convert microvolt AC that i get from some sensor , i want to amplify it upto 5V DC so i can make relation with input and gain.
i tried many circuit and modules but microvolt is very less for them to work. so i need help if anyone give any suggestion.
Out of curiosity this is what I see with a 1kHz 100uVp-p signal and the single-stage x 200 amplifier from here:
Building a Measurement Amplifier
I had to string a lot of ferrites on the coax though. It will be nice to put a common-mode choke in the next iteration of the design, but not sure how to do that yet, since the BNC is connected to the enclosure. There are some plastic BNC connectors, so that could be worth experimenting with. I might put the land pattern for a choke on the board, but could be just jumpered across if a plastic connector is not available/used.
The problem-solver:
EDIT: Maybe I should put a land pattern for allowing a twisted-pair cable connector like XLR to be used optionally if BNC is not desired.
Out of curiosity this is what I see with a 1kHz 100uVp-p signal and the single-stage x 200 amplifier from here:
Building a Measurement Amplifier
I had to string a lot of ferrites on the coax though. It will be nice to put a common-mode choke in the next iteration of the design, but not sure how to do that yet, since the BNC is connected to the enclosure. There are some plastic BNC connectors, so that could be worth experimenting with. I might put the land pattern for a choke on the board, but could be just jumpered across if a plastic connector is not available/used.
The problem-solver:
EDIT: Maybe I should put a land pattern for allowing a twisted-pair cable connector like XLR to be used optionally if BNC is not desired.
