#6301
LectronFan
Moderator

Hi all,

Wouldn’t it be cool to actually hear sounds produced by this oscillator ?

Well, by adding a speaker and some modules, we can !

We have to use a red wire connected to 2 contact plugs which can easily slide between two adjacent Lectron cubes. Put the red plug as shown in the picture. Use the black plug to “probe” around the circuit and hear the different sounds produced.

An oscilloscope can come in very handy to visualize the different waveforms !

Don’t forget to turn the potentiometer to change the pitch of the sound !

Triangle sound generator

For some experimenting, change the value of <span style=”color: #0000ff;”>C <span style=”color: #000000;”>to 47nF</span><span style=”color: #000000;”>. Also, change the value of <span style=”color: #0000ff;”>R<span style=”color: #000000;”> to 1,5K.</span></span>
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Have you already figured out how the circuit works ?

A hint : <span style=”color: #0000ff;”>R</span> and <span style=”color: #0000ff;”>C</span> are responsible for the pitch of the oscillator.<span style=”color: #000000;”> The circuit is a combination of 2 basic circuits.</span>

Can you guess which ones ?

Give it a go, before we dive into the next experiment : a sawtooth oscillator !

Greetings

  • This reply was modified 2 years, 9 months ago by Michael.
  • This reply was modified 2 years, 9 months ago by Michael.