Tunable Active Phase RС-Corrector
Abstract
The article describes designing of a simple active filter circuit for an amplitude RC equalizer on three operational amplifiers with reconfigurability of all three main parameters: resonance frequency transfer coefficient and Q. Reconfigurability of these parameters is carried out by two variable resistors and one potentiometer. To adjust the resonance frequency, a dual potentiometer is not required. The quality factor and the transmission coefficient are adjusted within one decade. The tuning of the resonance frequency is possible within one octave without a significant effect on the Q-value. The obtained scheme of a simple tunable amplitude corrector is suitable for working in the range of low frequencies to video frequencies.
About the Authors
Y. M. Inshakov
Saint Petersburg Electrotechnical University "LETI"
Russian Federation
Ph.D. in Engineering (1973), Associate Professor (1978), Professor of the Department of Theoretical Bases of Electrical Engineering
Russian Federation
Ph.D. in Engineering (1973), Associate Professor (1978), Professor of the Department of Theoretical Bases of Electrical Engineering
A. V. Belov
FGBNU "Institute of Experimental Medicine" (Saint Petersburg)
Russian Federation
Ph.D. in Engineering (1977), leading research
Russian Federation
Ph.D. in Engineering (1977), leading research
References
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5. Inshakov Yu. M., Belov A. V. Tunable Bandpass Active RC Filter. Izvestiya Vysshikh Uchebnykh Zavedenii Rossii. Radioelektronika [Journal of the Russian Universities. Radioelectronics]. 2013, no. 2, pp. 66-70.
Review
For citations:
Inshakov Y.M., Belov A.V. Tunable Active Phase RС-Corrector. Journal of the Russian Universities. Radioelectronics. 2017;(4):42-46. (In Russ.)
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