application-note · German
Die Differentialgleichung und ihre Lösung mit den Operationsverstärkern; Grundlagen einfacher Regeleinrichtungen
A January 1972 PEK Electronic application note (document numbers L 1112 and L 2310) covering two related topics in 18 pages. The first part (L 1112) explains how to solve ordinary differential equations using op-amp integrator circuits, covering single and double integration, differentiation, time transformation, and a worked RL-circuit simulation example. The second part (L 2310) introduces the fundamentals of simple electronic controllers — P, I, PI, and D types — realized with op-amps, including step-response waveforms and transfer functions.
differential equationsoperational amplifiersanalog computing circuitscontrol systems