Piezoelectric Actuators By Kathir Sudhir Automation Solutions

The PDu150 is a complete miniaturized power supply and ultra-low noise driver for up to three 100V, 120V or 150V piezoelectric stack actuators. Output currents up to 100mA per channel are developed at frequencies up to 80 kHz with exceptionally low noise. The three channels can be connected in parallel to produce an output current of up to 300mA. The noise level of 26uV is typically an order of magnitude better than the best full-size instruments even though the output power is similar. With a peak-to-peak resolution exceeding one part-per-million or 20-bit, the PDu150 exceeds the most demanding requirements in semiconductor machinery, scanning probe microscopy, optics, vibration control, and nano positioning. There are four main types of piezo actuators, distinguished by the arrangement of their piezo elements and by the type of movement they generate.