A big howdy to every one here.
I've got a strain gage project I'm building and is feeding into a 10 seg led dot bar driver, and have got it working not to bad. But i need to adjust the sensitivity (gain) without the dc offset being moved as i only want to use one POT for ease of adjustment.
Say Rail is 10v and ground is 0v. What i want to do is when there is no force applied to the strain sensor the output of the Op-amp is fixed at 5v so i can stress the sensor to go to 10v-0v. How would i do this so when i adjust the gain with no load the middle led stays on no matter what the gain is
Thoughts would be most welcome
Cheers
Snowie
I've got a strain gage project I'm building and is feeding into a 10 seg led dot bar driver, and have got it working not to bad. But i need to adjust the sensitivity (gain) without the dc offset being moved as i only want to use one POT for ease of adjustment.
Say Rail is 10v and ground is 0v. What i want to do is when there is no force applied to the strain sensor the output of the Op-amp is fixed at 5v so i can stress the sensor to go to 10v-0v. How would i do this so when i adjust the gain with no load the middle led stays on no matter what the gain is
Thoughts would be most welcome
Cheers
Snowie