High-voltage amplifier drives piezo tubes


Posted on Feb 17, 2013

The circuit in Figure 1 can drive high-resistance, low-capacitance piezoelectric loads at a 3-dB bandwidth of 6 kHz. It offers a low-cost alternative to commercial drivers.



Applying an input signal to IC1 drives its output toward the positive or the negative 12V supply rail. Allowing IC1's output to saturate would introduce sufficient slew-rate delay to cause oscillations. Although specifying a relatively fast operational a




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