I am trying to drive a "piezo atomizer" which is pretty much a transducer from what I can see.

The specs on the transducer are as follows:

-30-50VPP  -Resonant frequency fr: 190 KHz±5KHz  -Resonant impedance Zm: ≤250 Ω  -static capacitance Cs: 2.2nF ±30%  -Test Condition: 25±3 °C 40~70% R.H.  -Cs => LCR meter at 1KHz 1Vrms

I thought I would be able to drive the transducer using the following circuit. I can get the the transducer to creak small bubbles when its in water but I can not get it to act like it should (a small humidifier).

Any suggestions as to where I am going wrong?

^{simulate this circuit – Schematic created using CircuitLab}

I am trying to drive a "piezo atomizer" which is pretty much a transducer from what I can see.

The specs on the transducer are as follows:

-30-50VPP 

-Resonant frequency fr: 190 KHz±5KHz 

-Resonant impedance Zm: ≤250 Ω 

-static capacitance Cs: 2.2nF ±30% 

-Test Condition: 25±3 °C 40~70% R.H. 

-Cs => LCR meter at 1KHz 1Vrms

I thought I would be able to drive the transducer using the following circuit. I can get the the transducer to creak small bubbles when its in water but I can not get it to act like it should (a small humidifier).

This is what I am getting from the net that connects collector of the npn and the negative lead of the piezo.

Any suggestions as to where I am going wrong?

^{simulate this circuit – Schematic created using CircuitLab}