1, operating frequency
The working frequency is the vibration frequency of the piezoelectric wafer. When the frequency of AC voltage applied across it is equal to the vibration frequency of the wafer, the output energy is the largest and the sensitivity is the highest.
2. Working temperature
Because the Curie point of piezoelectric materials is generally high, especially when the power of ultrasonic probe for diagnosis is small, the working temperature is relatively low, and it can work for a long time without failure. The temperature of medical ultrasonic probe is relatively high, which requires separate refrigeration equipment.
3. Sensitivity
Mainly depends on the wafer itself. Large electromechanical coupling coefficient and high sensitivity; On the contrary, the sensitivity is low.