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Single Commercially Available IC: LT1228 Based Sinusoidal Oscillator DOI:10.15199/48.2019.04.41

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The sinusoidal oscillator is extremely useful in communication systems, electronic power systems, and instrumentation/measurement systems [1-3]. Furthermore, a sinusoidal signal is a key part of training students in the laboratory [3-5] to become skilled electrical and electronic engineering. Today, sinusoidal oscillators are frequently used in research and a large number of results have now been published [1-22]. They employ different high performance active building blocks and exhibit several advantages such as: their condition and frequency of oscillation can be orthogonally or independently adjusted with the transconductance gains [3-9, 15-17, 20-22] or the parasitic resistances [2-4, 13, 16, 18] or voltage gains [1, 10, 12, 14]. The sinusoidal signal provides only voltage-mode [1-2, 7, 10-14, 19-20] or current-mode [3, 6, 8-9, 15, 18, 22]. Also, some circuits provide voltage and current-mode simultaneously [4-5, 16-17]. However, there are some drawbacks as it has been found that (i) there are many active devices [10-11, 13-14, 18-19] (ii) there are requirements for an extension or copy terminal of active devices [3-4, 7, 9, 15, 17] (iii) the use of floating capacitors may cause parasitic effects [8, 19, 21] (iv) the outputimpedance of voltage signal does not have low-impedance which is required for a voltage buffer [2, 5, 7, 10, 13-14, 17] (v) the active devices in [2, 4-5, 9, 11, 13-16, 18-20, 22] are not commercially available with IC, (vi) the results of oscillator circuits in [2, 4-5, 9, 11, 13-16, 18-20, 22] are only presented by computer simulation without an experimental implementation. A comparison of the proposed sinusoidal oscillator and recent research is shown in Table 1. This paper proposes a synthesis of the voltage-mode sinusoidal oscillator with gain control of the oscillation frequency. The proposed sinusoidal circuit enjoys several advantages such as (i) construction of a circuit is very simple empl[...]

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