Articles written in Sadhana
Volume 33 Issue 5 October 2008 pp 713-720
Applications of power operational ampliﬁers (opamps) are increasing day by day in the industry as they are used in audio ampliﬁers, Piezo transducer systems and the electron deﬂection systems. Power operational ampliﬁers have all the features of a general purpose opamp except the additional power handling capability. The power handling feature can be achieved using an external circuitry around a regular opamp. Normally power opamps can deliver current more than 50 mA and can operate on the supply voltage more than ±25 V. This paper gives the details of one of the power opamps developed to drive the Piezo Actuators for Active Vibration Control (AVC) of aircraft/aerospace structures. The designed power opamp will work on ±200 V supply voltage and can deliver 200 mA current.