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Req: Charge Amplifier for Piezoelectric Presure sensor

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weeyndha

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Hello All,

Please, help. I need schematic of charge amplifier for presure sensor (piezoelectric).

Regards
 

flatulent

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one method

One cheap method is to use an op amp integrator. Put your transducer between the - input and ground. Put a capacitor between the - input and the output. Ground the + input. One major source of error is the op amp input bias current. pick one with the least current.
 

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