Load Cell Amplifier

I’ve found some interesting schematic of load cell amplifier. As we know, load cell amplifier is pretty expensive with fair price range of 100-300 USD. You may built your own load cell amplifier to get the lower cost. Here the two scheme diagram of load cell amplifier circuit:

Load Cell Amplifier using AMP04:

load cell amplifier schematic

source: http://cgi.ebay.com/Load-Cell-Amplifier-Improved-Better-Stability-New-/350451149452

Load Cell Amplifier using INA125:

load cell amplifier
source: http://www.aircommandrockets.com/day67.htm

Load Cell Amp Schematic
source: http://psas.pdx.edu/LoadCellAmp/

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