Introduction: Building a Synth: Getting the Oscillators Working.

Picture of Building a Synth: Getting the Oscillators Working.

Here are some photos of an oscillator design that I have been working on recently.
I came up with a simple design for an oscillator using an op amp, a capacitor, and four resistors.
The object of this project is to get some good oscillators working to use in a synth.

The schematic for the oscillator is included in the photos.
If you have any questions about the project, don't hesitate to ask!



pizzyflavin (author)2013-12-16

I would put an ac coupling cap at the output to remove the dc component.

jensenr30 (author)pizzyflavin2013-12-18

Yeah. I agree completely. If you were going to play this sound through a speaker or try to amplify it, that would be a good first step.

insanepoetry (author)2013-05-23

where would the outputs be so you could pass the signal to a filter or something else

jensenr30 (author)insanepoetry2013-05-23

The output of the Op amp will do nicely.
you will get a square wave out of that end. It would be a good idea to use a buffer (unity gain amplifier) to amplify that signal first (so that the filter itself doesn't interfere with the frequency and characteristics of the oscillator).
If you want to use a "shark fin" wave, you'll have to put a second (preferably unity gain) amplifier on the positive node of the capacitor. then the output of that second op amp will be where you would connect your filtering circuit.

About This Instructable




Bio: I'm an 18 year old Electronics enthusiast. I have completed five semesters of schooling at Minnesota State University in Mankato. I'm pursuing a ... More »
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