How can i make a voltage or charge amplifier for a piezoelectric sensor ? what do i need to know ?

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iceng4 years ago
You need to understand a piezo has more output range then any op-amp.

To use a piezo always add a peak limit and the natural negative protection.

If you can not determine your high piezo output before-hand there
is the technical gain amplifier selection on the fly with its attendant
resolution losses.

A charge coulomb integrating amplifier collector can be useful.

Strain gauges are proper more reliable approach to instrumentation.

To work out the performance, you need to specify the load you are going to apply, in terms of microstrain.

It could be 200V.
Take a look for "charge amplifier circuits"
nobykobe (author)  steveastrouk4 years ago
thanks for the fast response
The data sheet you posted has a block diagram of the signal amp. All you need is an Op-amp, resistor and capacitor and your all set. According to the diagram in the data sheet anyway.

Here is some great information on Op-amps that should help you figure out what you need.
nobykobe (author)  mpilchfamily4 years ago
I want to know , how much voltage does the piezoelectric sensor generate so i can determine how to design the amplifier