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Op Amps: Voltage Controlled Filter

In this video we examine a voltage controlled filter. The tuning frequency can be adjusted by an external voltage rather than through the use of a potentiometer. This particular VCF is based on the state variable filter and has multiple outputs. It uses multiple op amps and OTAs (Operational Transconductance Amplifier). It is best if you watch the video covering the state variable filter and the one discussing the OTA before watching this one. References: Operational Amplifiers and Linear Integrated Circuits: Theory and Application; Chapter 11, section 7. My free texts and lab manuals are available for download at my college web site https://www.mvcc.edu/jfiore and at my personal site http://www.dissidents.com Inexpensive print and kindle copies are available at Amazon https://www.amazon.com/author/jimfiore If you like my texts and videos, and would like to help defray the costs of making and maintaining them, consider making a modest donation at https://www.buymeacoffee.com/Professo...