Hi,
Does anyone know if there is an equation to calculate the pressure produced by a piezoelectric transducer (maybe in function of electrical power, density of media, etc).
Thanks,
pilafa
The transducer supplier should have some help available. ... probably in a fairly dense technical document that an ordinary salesperson could not even read.
Off the top of my head, I think that a piezo transducer produces mechanical strain in proportion to electrical charge, and conversely.
To get units of voltage per unit pressure, you need a charge amplifier, which is strictly speaking a charge to voltage transducer.
Between the charge amp and the piezo, you need gold plated terminals and teflon coax, which you have to bake regularly to keep out atmospheric moisture.
I don't think charge amps are bidirectional, so you need a different box to take a voltage input and pump charge into/out of the piezo to make it move.