Published:2011/6/23 22:39:00 Author:Zoey | Keyword: 555sine wave, generator, circuit | From:SeekIC
As shown in the figure 5-13, the astable multivibrator is composed of IC1, Rp1, R6 and C3, and f=1.44/(RP1+2R5)C3. Oscillation frequency of the parameter in the figure is 20Hz~20khz, which can be adjusted by RP1. Figure5-13 Sina wave Generator Circuit Both IC2 and IC3 use Double BCD up counter for obtain four-stage cascaded frequency. IC4 is a new switched-capacitor filter, it filters the frequency signal sent and output standard sine fundamental. While IC5 uses JEFT to input theoperational amplifier, which is used to butter the amplifier stage, and the value of amplitude can be adjusted by RP2, the magnification K≈RP2/RHo.
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