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IETE Journal of Research Volume 32, 1986 - Issue 2
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Letters to the Editor

Single Grounded-Resistor-Controlled Variable Frequency Active RC Notch Filters

T.S. RathoreDepartment of Electrical Engineering, Concordia University, 1455 De Maisonneuve Blvd. West, Montreal, QuebecH3G 1M8, Canada
&
B.B. BhattacharyyaDepartment of Electrical Engineering and Computer, University of Quwait, P.O. Box 5969, Quwait.
, FIETE
Pages 73-74 | Received 08 Jul 1985, Published online: 02 Jun 2015
 
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Abstract

Two new single operational amplifier (OA) notch filters that use two capacitors and five resistors are described. The null-frequency (NF) can be adjusted, independent of the condition of null (CN), over a wide range by a single grounded resistor. Test results agree with the theoretical analysis.

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