ELECTRICA
Original Articles

Single Commercially Available Integrated Circuit-based Sinusoidal Oscillators with Amplitude Adjustability and Electronic Control of Condition

1.

Department of Engineering Education, School of Industrial Education and Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand

2.

Department of Teacher Training in Electrical Engineering, Faculty of Technical Education, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand

3.

Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic

ELECTRICA 2024; 24: 799-811
DOI: 10.5152/electrica.2024.24082
Read: 386 Downloads: 85 Published: 08 November 2024

Abstract
This paper presents four new sinusoidal oscillators using a commercially available integrated circuit (IC). The proposed circuits are simple topologies that employ a single commercial IC, LT1228. It is connected to passive element, consisting of four resistors and two capacitors. All derived oscillator circuits have low output impedance, allowing them to connect to other circuits without requiring an additional buffer. Using an active LT1228 device enables electronic adjustment of parameters in the proposed circuits. A feedback resistor can be used to change the output signal's amplitude without affecting the oscillation's frequency or condition. We performed both simulations using the PSPICE program and experiments to confirm the accuracy of all proposed oscillator circuits. The best total harmonic distortion was 0.13% for the proposed oscillator circuit 3. Adjusting the maximum amplitude using a resistor provides a gain of roughly 1.5–16.5 dB for the proposed oscillator circuit no. 1.

Cite this article as: S. Duangkaew, P. Supavarasuwat, M. Siripruchyanun, R. Sotner, W. Jaikla and W. Sunthonkanokpong, "Single commercially available integrated circuit-based sinusoidal oscillators with amplitude adjustability and electronic control of condition," Electrica, 24(3), 799-811, 2024.

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