Design and Application of a Low Frequency VCO
2014 ◽
Vol 668-669
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pp. 808-811
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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.
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1996 ◽
Vol 06
(08)
◽
pp. 1595-1600
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1971 ◽
Vol 36
(4)
◽
pp. 527-537
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