This is a simple design circuit for capacitive load. This circuit is based on LF411 or LF441 op amps IC. This is the figure of the circuit;
Both the LF411 and LF441 families have a lot of trouble driving more than about 200 pF without oscillating. Standard techniques to get around this problem are to add a small resistor (about 50X) in series with the output or to use one of the LF356 family (the 356 itself being the most popular for this purpose). An explanation of why the 356 output stage is so unusually strong is provided in the second reference listed. When extra output filtering is desired, a series RC damper will often be more effective than just a large filter capacitor.
[Circuit source: National Semiconductor Notes].
Both the LF411 and LF441 families have a lot of trouble driving more than about 200 pF without oscillating. Standard techniques to get around this problem are to add a small resistor (about 50X) in series with the output or to use one of the LF356 family (the 356 itself being the most popular for this purpose). An explanation of why the 356 output stage is so unusually strong is provided in the second reference listed. When extra output filtering is desired, a series RC damper will often be more effective than just a large filter capacitor.
[Circuit source: National Semiconductor Notes].
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