Feature

Power amplifier provides 6A peak for high-voltage piezo actuators

PI's (Physik Instrumente's) new E-482 high-power piezo amplifier/controller provides a 6A peak current at 1,050V in a 19in bench-top unit. The amplifier is suitable for the operation of piezo actuators with high electrical capacitance, such as the PICA piezo actuator series P-225 and P-235.

18/12/2012 15:09:57

This class D switching amplifier modulates the pulse width of the control signal and thus controls the piezo output voltage.

When the piezo actuator is discharged, a patented circuitry for energy recovery stores the returning energy in a capacitor and makes it reusable for the next charging cycle. Thus, the E-482 achieves high efficiency with peak currents of up to 6A and average currents of up to 2A.

The power amplifier will also accept the E-509 sensor-/servo-controller module for closed-loop operation.

Written By Sophia Bell

Sophia Bell is the Group Editor of DPA, Connectivity, and PBSI. She joined the team in 2020 as Assistant Editor after achieving a First-Class Honours BA in English Literature and Film Studies from the University of East Anglia. In her current role, she leads the editorial strategy, driving digital growth and ensuring each title continues to deliver trusted, relevant insight for engineering and manufacturing professionals.