New Types of Sinewave Oscillators

New types of variable frequency sinewave oscillators are introduced which bring the most desirable linear tuning laws of the forms fo ¿ Re, and fo ¿ Ce into the domain of sinusoidal oscillators. Two exemplary circuits are presented and the experimental results are given which are found to be in agreement with the theory. In their various modes of operation, the proposed types of oscillators promise to provide many significant advantages in various instrumentation and measurement applications which are not possible to achieve with previously known active resistance-capacitance (RC) oscillators.

[1]  Bjoern E. Bjerede.  Short-Term Stability of a Class of Capacitively Tuned Transducer Oscillators , 1971 .

[2]  M. Hribsek,et al.  VCO controlled by one variable resistor , 1976 .

[3]  A. P. Shivaprasad.  A Wide-Range Variable-Frequency Phase-Shift Oscillator , 1972 .

[4]  N. Boutin.  Synthesis of dual-feedback ideal op-amp oscillator circuits , 1982 .

[5]  R. Senani.  New canonic sinusoidal oscillator with independent frequency control through a single grounded resistor , 1979, Proceedings of the IEEE.

[6]  Vimal Singh.  Comment: Novel sinusoidal oscillator employing grounded capacitors , 1980 .

[7]  U.S. Ganguly.  RC-oscillator synthesis: Sub-audio-frequency generation with a single control , 1978, Proceedings of the IEEE.

[9]  Subbarayan Pasupathy.  Equivalence of LC and RC oscillators , 1973 .

[10]  R. Senani.  Some observations concerning the methods of filter/oscillator realization using the concept of FDNR , 1979, Proceedings of the IEEE.

[11]  R. Nandi,et al.  New RC oscillators with single-element controls , 1978 .

[12]  D. Patranabis,et al.  Some observations on single-element control sine-wave oscillators , 1977 .

[13]  S.C. Dutta Roy,et al.  Single element controlled oscillators: A network synthetic approach , 1979, Proceedings of the IEEE.

[14]  M.N.S. Swamy,et al.  A simple voltage controlled oscillator with grounded capacitors , 1977, Proceedings of the IEEE.

[15]  B. B. Bhattacharyya,et al.  A New Precision Voltage Control Scheme for the Amplitude of Oscillators , 1979, IEEE Transactions on Instrumentation and Measurement.

[16]  R. Senani,et al.  New canonic active RC realizations of grounded and floating inductors , 1978, Proceedings of the IEEE.

[17]  S. Saha.  Electronically Tunable RC Sinusoidal Oscillators , 1975, IEEE Transactions on Instrumentation and Measurement.

[18]  Raj Senani.  Reply: Novel sinusoidal oscillator employing grounded capacitors , 1980 .

[19]  B. B. Bhattacharyya,et al.  Systematic generation of canonic sinusoidal RC-active oscillators , 1981 .

[20]  A. K. Bandyopadhyay.  New type of variable-frequency RC oscillator , 1974 .

[21]  P. C. Sen,et al.  A simulated inductor and an RC oscillator , 1971 .

[22]  Sudhanshu Shekhar Jamuar,et al.  Identification and design of single amplifier single resistance controlled oscillators , 1983 .