Application Cases

Experiment Name: Application of Power Amplifier in Research on Anti-Fatigue High-Voltage Piezoelectric Materials

Research Direction: Piezoelectric Materials

Experimental Content: Using a function generator to set the desired waveform to be applied across the sample, the voltage signal is input into the Aigtek ATA-2161 voltage amplifier. The amplification factor is set according to the required voltage, and the amplified positive and negative output terminals are respectively connected across the load. Throughout the experiment, the monitoring interface at the rear of the amplifier is connected to an oscilloscope to monitor the voltage signal in real time. An AC voltage cycling test is applied to the material to examine its anti-fatigue characteristics.

Test Objective: To detect changes in the electrical properties of the material under fatigue cycling.

Testing Equipment: Function Generator, ATA-2161 High-Voltage Amplifier, Oscilloscope

Experimental Procedure:
The objective of the experiment was to test the electrical property characteristics of piezoelectric ceramics after different numbers of cycles. The surface-silvered piezoelectric ceramic wafer was placed in a specialized pressurization mold, and the entire mold was immersed in silicone oil to prevent hazards caused by electrical sparks generated by high voltage. First, a function generator was used to set the desired waveform to be applied across the sample. The voltage signal was input into the ATA-2161 voltage amplifier, and the amplification factor was set according to the required voltage. The amplified positive and negative output terminals were respectively connected to the positive and negative terminals of the mold. During the entire experiment, an oscilloscope was connected to the rear monitoring interface of the amplifier to monitor the voltage signal in real time.

Test Results:
After applying pressurized testing to the samples using the ATA-2161 high-voltage amplifier, the frequency of electric field cycles was calculated based on the applied voltage frequency and time. After applying different numbers of voltage cycles, the samples were placed in specialized testing instruments to measure their electrical properties. The specific results are shown in the figure below, with the left and right columns representing performance test charts for different material compositions. Compared to the composition before modification, the modified composition exhibited a electric field anti-fatigue effect, maintaining good electrical properties even after the application of electric field cycles.

Figure: ATA-2161 High-Voltage Amplifier Specifications and Parameters