Filters - Square Wave to Sine Wave

Discussion in 'General Electronics Chat' started by alexkymberly, Oct 17, 2016.

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  1. alexkymberly

    Thread Starter New Member

    Oct 17, 2016
    Hey everyone!
    I am a year 11 student currently studying electronically generated sound. I have an RC circuit with a 555 timer. My project is to reach a desired freq. of 440Hz with R1=33kOhm R2= 330kOhm and C=0.0047mF. When i connect my circuit to a oscilloscope i get a square wave. How do i make it a sine wave with the insertion of a low pass filter? Also, what even is a low pass filter!?
    A quadrillion thanks is advance!
  2. MrChips


    Oct 2, 2009
    Please keep discussion on the same topic to one thread.
    Continue here.
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