DesignTopology
- A TL082 oscillator core produces the square wave.
- An integrator stage turns it into a triangle.
- A shaping and amplification stage produces the sine.
Micro-CapSimulate first
I tuned the circuit in Micro-Cap 12 to 4.4 kHz at 10 V before ordering any boards. Simulation is cheap; a board revision is not.
HardwareBoard and bring-up
The PCB was routed in Altium Designer, populated with through-hole parts and hand-soldered. I captured each output on an oscilloscope and compared it against the simulated traces. The measured hardware matched the simulation on all three outputs at the design frequency and amplitude.