Design and Application of a Low Frequency VCO

Abstract:

The low frequency voltage controlled oscillator (VCO) is designed using integrated operational amplifier. The frequency of the output signal of VCO changes with the magnitude of the input signal voltage, and show a linear relationship within a certain range through the experimental test. Experiments show that, under the input of certain amplitude and frequency range of the square wave, triangle wave, saw-tooth wave, the output waveform of VCO respectively is ambulance, fire siren and other kinds of ambulance siren Signal. This innovative design’ cost is low, realized by analog circuit. It can be used in the practice of teaching case, electronic production or development of sound panels.

• Periodical: Applied Mechanics and Materials (Volumes 668-669)
• Pages: 808-811
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.668-669.808
• Online since: October 2014
• Authors: Hui Min Zhang, Qing Ping Wu, Zheng Yuan Zhou, Xun Wang
• Keywords: Application, Design, Low Frequency, VCO

References

[1] L. D. Xing, VCO circuit design of a center frequency adjustable. Microelectronics and computer, April. (2011).

[2] RolandE. Best. PLL design, simulation and application. Qinghua University Press, Beijing, (2003).

[3] Miyazaki T, Hashimo to M, Onodera H . A performance comparison o f PLLs for clock generation using ring oscillator VCO and LC oscillator in a digital CMOS process[ C]/IEEE Press Piscataway. NJ, USA: IEEE, 2004: 545- 546.

DOI: 10.1109/aspdac.2004.1337641

[4] RAZAVI B. RF microelectronics[M]. 2nd ed. New York: Pearson Education, Inc. (2012).

[5] Qing-ping WU, Electronic technology and project training. Renmin University Press, Beijing, (2011).