Bank of new schemes of active RC-filters of the Sallen-Key subclass with independent tuning of the main parameters

 A new subclass of Sallen-Key RC-filters with independent adjustment of the main parameters, which are implemented on voltage followers (buffer and operational amplifiers), has been studied. Low- and high-pass filters, band-pass and notch filters are offered, which have the ability to independently adjust the pole frequency, pole quality factor and transmission coefficient with different resistors. Their computer simulation was carried out in the Micro-Cap environment, the amplitude-frequency and phase-frequency characteristics were obtained in the tuning mode using the models of buffer and operational amplifiers built into the Micro-Cap.