This paper presents the design of a voltage-mode sinusoidal oscillator using commercially available ICs (AD830). The proposed circuits are a single-phase sinusoidal oscillator and a multiphase sinusoidal oscillator. The first circuit presents a single-phase sinusoidal oscillator with low output impedance. The oscillation frequency and oscillation condition can be easily tuned by the value of the resistors. The proposed single-phase sinusoidal oscillator consists of two AD830, two resistors, and two capacitors. The second circuit presents the multiphase sinusoidal oscillator synthesized on a first-order low-pass filter. The proposed multiphase sinusoidal oscillator consists of three AD830s, nine resistors and three capacitors. The oscillation frequency of the multiphase sinusoidal oscillator can be adjusted without affecting the oscillation condition. The output voltage of the multiphase sinusoidal oscillator is low impedance, allowing for simple external load driving without the use of voltage buffers. The operation of the proposed oscillator circuits is confirmed by experimental testing. The results of experiments achieve a theoretical design that is very appropriate for developing a worksheet for teaching and learning in electrical and electronic engineering laboratories.
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