1 Reply Latest reply on Jan 6, 2016 12:02 AM by pavankumar.vibhute

    PSoC3 Op-Amp with strain gauge problem

    atif.abdulhady

      Hello everyone,

         

      I'm designing system conditioning for a strain gauge transducer, I want a gain of about 200. the transducer power (Excitation voltage) I use from the PSoC itself of about 5 volt the output of the strainguage is connected to an Op-amp using different power options.

         

      The problem is that when I use voltage from the VR for instance everything is alright but when I connect the output terminal of the transducer the voltage across them change and the output become fixed no matter I change the strain of the transducer.

         

      Please assist.

         

      maxdamage.