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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Super Simple Ramp and Sawtooth LFO
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Ojd



Joined: Feb 22, 2008
Posts: 65
Location: Ua
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PostPosted: Mon Mar 16, 2009 2:39 am    Post subject: Super Simple Ramp and Sawtooth LFO
Subject description: Can I get triangle out of it?
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http://musicfromouterspace.com/analogsynth/NewAugustRampLFO.html
I was looking for some mini-LFO, (in matter of size of the PCB, and complexity) to put it into mini-modular-audio processor. With such simplicity i could put 2 of them. But they would be useful to me only having simple triangle modulation.

For my n00b electronic knowledge if i connect together saw and ramp i should get triange, right? If now, where else should i look for these simple 0-5V tri LFOs ? Its a simple question, really.
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g.gabba



Joined: Nov 29, 2008
Posts: 32
Location: berlin

PostPosted: Fri Mar 20, 2009 11:10 am    Post subject: Reply with quote  Mark this post and the followings unread

edit: i was wrong
Last edited by g.gabba on Mon Apr 14, 2014 3:07 am; edited 1 time in total
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richardc64



Joined: Jun 01, 2006
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PostPosted: Fri Mar 20, 2009 1:46 pm    Post subject: Re: Super Simple Ramp and Sawtooth LFO
Subject description: Can I get triangle out of it?
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Ojd wrote:
For my n00b electronic knowledge if i connect together saw and ramp i should get triange, right? If now, where else should i look for these simple 0-5V tri LFOs ? Its a simple question, really.


Select neither, that is, use a switch with a center off position. Or omit the diodes, switch and R1 altogether. But that MFOS circuit runs on +/-12v. For a single-supply LFO you could use the one in the DS-7. It runs on 5volts and uses half an LM324, so you could get 2 out of one IC.

Here's another simple one that might work at 5volts.


SimpleDualLFO.gif
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SimpleDualLFO.gif



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Ojd



Joined: Feb 22, 2008
Posts: 65
Location: Ua
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PostPosted: Sat Mar 21, 2009 12:31 am    Post subject: Re: Super Simple Ramp and Sawtooth LFO
Subject description: Can I get triangle out of it?
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Thank you for the replies. Really easy mod.

The project on which I'm working now, is modular system of sound processing, that includes extensive filter/EQ section, Distortion/Fuzz/Waveshaper, Flanger/Chorus/Delay.
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