A gyrator is a passive, linear, lossless, two-port electrical network element proposed in 1948 by Bernard D. H. Tellegen as a hypothetical fifth linear element after the resistor, capacitor, inductor and ideal transformer.
En gyrator er en passiv, lineær, tabsfri, to-port elektrisk netværkselement foreslået i 1948 af Bernard D. H. Tellegen som en hypotetisk femte lineært element efter resistor, kondensator, spole og ideel transformator.