Mifune T.Mishonov T.M.Serafimov N.S.Dimitrova I.M.Popeski-Dimovski R.Velkoska L.Petkov E.G.Varonov A.M.Barone A.2024-07-102024-07-102024-07-102024-07-102021-02-011089-76230034-674810.1063/5.0041136SCOPUS_ID:85101769286https://rlib.uctm.edu/handle/123456789/628A tunable high-Q resonator is performed in the schematics of the General Impedance Converter (GIC). In the framework of frequency dependent open-loop gain of operational amplifiers, a general formula of the frequency dependence of the impedance of GIC is derived. The explicit formulas for the resonance frequency and Q-factor include as an immanent parameter the crossover frequency of the operational amplifier. Voltage measurements of GIC with a lock-in amplifier perfectly agree with the derived formulas.enNote