Novel sinusoidal oscillator employing grounded capacitors

Novel sinusoidal oscillator employing grounded capacitors

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An earlier single-resistance-controlled oscillator (s.r.c.o.) with grounded capacitors employs three operational amplifiers (o.a.); the new s.r.c.o. proposed here employs only two o.a.s and a reduced number of resistors. The proposed s.r.c.o. may be adopted for voltage-controlled-oscillator realisation. In addition, the new circuit may also be employed for the generation of very-low-frequency oscillations. The circuit appears to be suitable for integrated-circuit implementation.


    1. 1)
      • M. Hribsek , R.W. Newcomb . VCO controlled by one variable resistor. IEEE Trans. , 166 - 169
    2. 2)
      • R. Senani . New canonic sinusoidal oscillator with independent frequency control through a single grounded resistor. Proc. IEEE , 691 - 692
    3. 3)
      • M. Sundaramurthy , B.B. Bhattacharyya , M.N.S. Swamy . A simple voltage-controlled-oscillator with grounded capacitors. Proc. IEEE , 1612 - 1614
    4. 4)
      • R. Nandi . Another very low frequency sinusoid oscillator. Int. J. Electron. , 197 - 200

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