Experimental Study on a PZT Driver Circuit with Good Dynamic Response Characteristics

We study the dynamic response characteristics of the piezoelectric ceramics (PZT) driver for many kinds of the irregular signals. The driver circuit can linearly amply many kinds of irregular signals with little distortion. When sinusoid signal is inputted, we measured the frequency response range of this circuit. When the frequency of the input sinusoid signal is in the range of 0-10 KHz, the distortion of the output signal is less than 3.19%. The rise-time and the fall-time were only 4.6 and 18.4 respectively when rectangular signal is inputted. The results show that, the PZT driver has wonderful dynamic response characteristics for irregular signals, and the frequency range is wide and the response speed is very fast. Furthermore, we find that when the frequency of the input signal changed, the consumed power of the driver changed correspondingly. By analyzing the experiment data, we can find that the consumed power of driver is proportional to the frequency of the input signal. To our knowledge, the correlation is seldom mentioned before.