The amplifier design requirements were to deliver a drive voltage of 100 V rms at 1 kHz into a 140 nFload. A schematic diagram of the amplifiers built for the ANCF test is shown in figure 2.9. The design is based on an APEX Model PA85 power operational amplifier. A feedback loop around ... The maximum current is set by the 3.9W resistor and the 68 pF plus 100W provide amplifier phase compensation.
|Title||:||Active Control of Fan Noise by Vane Actuators|