Darrin BI hitched the scope up to the power op-amp version of the circuit, and found clipping! That had to end. Soon I built the diode regulated version found in a TI datasheet and added a power output stage to it. A schematic is in the project files area.
Eww, distortion
A project log for Breadboarded 3-Axis Sine-Cosine Controller
Build this controller to engrave the PCB for your permanent controller
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