Warsash Scientific introduces the E-482 power amplifier/controller from PI (Physik Instrumente).
A new high-power piezo amplifier/controller with 6A peak current at 1050V voltage swing, the E-482 is suitable for applications such as material testing for quality control purposes or highly dynamic control of valves in test stands.
Especially designed for the operation of piezo actuators with high electrical capacitance such as the PICA piezo actuator series P-225 and P-235, the E-482 is a 19-inch benchtop class D switching amplifier that modulates the pulse width of the control signal and 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, helping the E-482 achieve high efficiency with peak currents of up to 6A and average currents of up to 2A. This type of energy recovery allows energy savings of up to 80% when compared with analogue amplifiers.
Additionally, the amplifier does not heat up as much, reducing its influence on the actual application. The output voltage range of 0 to 1050V can be set to bipolar on request.