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Abstract
A simple oscillator circuit, which uses 1 operational amplifier (OA), 4 resistors and 2 equal-valued grounded capacitors, is given. Conditions are obtained to minimize the effect of the finite gain of OA at high frequencies. Continuous tuning is possible over a large high frequency range with ganged capacitors or resistors. Capacitance (C)-multipliers are used to extend the lower frequency range of the oscillator. A typical design of a wideband oscillator (15 Hz to 100 kHz) is given. Experimental results are included, which support the theory.
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B.H. Khan
Khan, BH: (b. 1955 July 1, Farrukhabad) He received the B.Sc. (Hons.) and M.E. degrees in Electrical Engineering in 1976 and 1978, respectively, from Aligarh Muslim University, Aligarh, and the Indian Institute of Science, Bangalore. Since 1978, Mr. Khan is on the faculty of the Department of Electrical Engineering, A.M.U., Aligarh. His research interests are in Applied Electronics and Power System Protection.