Can you quantify the size of the changes for the loads you are looking at? = I assume this is a FSR like material. Veronica On 2013-02-12, at 6:09 PM, yamanoor sairam wrote: > Hi All, >=20 > I am using a Fabric Pressure sensor in my project that could be read usin= g a potential divider arrangement. =20 >=20 > Due to the hysteresis, the change in resistance is really small when this= sensor is subjected to several cycles of stress/strain.=20 >=20 > Another disadvantage behind using the sensor is that there is a sudden ch= ange in resistance when the fabric is stretched/contracted.=20 >=20 > I am planning to designing an op-amp circuit with a gain of 10, rail to r= ail configuration to detect small changes in resistance and get rid of larg= e changes. Is this the only way to do it? >=20 > I thought I should check this with someone before buying the components. = I tried a unity gain amplifier and I was not successful.=20 >=20 > Thanks, > Sai > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .