1kHz sine wave oscillator(741)

Published:2011/4/20 2:42:00 Author:Ecco | Keyword: 1kHz , sine wave, oscillator | From:SeekIC

The circuit shown in the chart is 1kHz sine wave oscillator circuit. Basing on the double-T circuit, the circuit using 741ordinary operational amplifier to produce 1000Hz sine wave output. Adjusting 100kΩ potentiometer will make circuit start oscillation, the oscillation frequency is determined by R1 and R2, and under normal circumstances, the value of two resistors is equal, the oscillation frequency is in inversely proportion with the resistance. Usually, the resistance is chosen between 4.7 ~ 18Ω, when the resistance of R1 and R2 is determined, the capacitor size could be selected according to need. In the figure, the resistor value choses 13Ω, capacitance is 0.01/μF.



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