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PSoC 5, 3 & 1 MCU

Not applicable

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.



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