Amplifier for piezoelectric sensors

[gdan]

This is an amplifier especially designed for piezoelectric sensors.
It is a differential charge amplifier but a two pin piezoelectric sensor can be connected to the (+) and (-) input.

The amplifier includes three gain setting (0 - 10 - 20 dBs) and high pass filters (3 Hz- 16Hz - 160Hz).

I have some PCBs available (without any components), if someone is interested to build one.
The dimensions of the PCB are 84mm × 101mm.
The price is 28 Euros (shipping is included).

 

[gdan]

Reminder!

 

[Mark Tillotson]

Perhaps this is too niche for much demand? Do you have a BoM?

 

[gdan]

I don't think so.
It has all the necessary circuits for the proper operation of a piezo sensor.
If a part of the circuit is not necessary, you can easily bypass it.

 

[UniQ]

What are some useful examples related to audio, and what kind of piezo sensor should one get?

 

[gdan]

Piezo sensors can be used to measure vibration on loudspeaker cabinets, turntables etc.
You can use them as a cheap alternative to accelerometers.

Here is a cheap one I have used with good results.

 

[gdan]

I have some PCBs available to build the amplifier.
The price is 28 Euros (shipping is included).

 

[gdan]

I still have some PCBs available to build the piezo-amplifier.

The price now is 25 Euros (shipping is included).

If you are interested, send me a message.