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DIY Oscillator using 4093 Trigger - Suggestions
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taita-sound



Joined: May 20, 2015
Posts: 3
Location: Ecuador

PostPosted: Wed May 20, 2015 9:04 am    Post subject: DIY Oscillator using 4093 Trigger - Suggestions Reply with quote  Mark this post and the followings unread

Dear partners!

I read the Nicolas Collins book and I would like to start my oscillator project using the 4093 element. So, I need that you help me with some Schematic for begin to work it. I built sometime ago a 555 oscillator and I found it very funny.

Greetings
Javier
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Steveg



Joined: Apr 23, 2015
Posts: 16
Location: Perth, Australia

PostPosted: Wed May 20, 2015 6:47 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hello Javier,

4093 based oscillators are used a lot in Lunettas (only second to 40106 oscillators).

Try http://electro-music.com/forum/viewtopic.php?highlight=4093&t=64169 for one 4093 based circuit.

There are a lot of other examples there in other threads.
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taita-sound



Joined: May 20, 2015
Posts: 3
Location: Ecuador

PostPosted: Wed May 20, 2015 7:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hello Steveg!

Thanks for your reply. Just a new question. I would like to add 2 different oscillators with 4 controls (potentiometers) so, get a different sound on each configuration. Is it possible to do in one circuit this?

Greetings
Javier
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PHOBoS



Joined: Jan 14, 2010
Posts: 2188
Location: Moon Base
Audio files: 412

PostPosted: Thu May 21, 2015 2:41 am    Post subject: Reply with quote  Mark this post and the followings unread

welcome party!

besides the NANDulator you can also make 4 oscillators and chain them, like here.
You could also make 4 oscillators and just mix them together with resistors or diodes but than you aren't using the NAND
function and are better of using a 40106 which has 6 gates. An example of that setup is the hetereodyne space explorer.
(hmm that site seems to be suspended but you can still see it at the internet archive).
But I think the NANDulator will give you most bang for it's buck with a single NAND chip.


taita-sound wrote:
I would like to add 2 different oscillators with 4 controls (potentiometers) so, get a different sound on each configuration. Is it possible to do in one circuit this?

hmm I don't really understand what you mean by that. You can change capacitors for different frequencies
but the outputs will always be squarewaves.

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taita-sound



Joined: May 20, 2015
Posts: 3
Location: Ecuador

PostPosted: Thu May 21, 2015 6:07 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello PHOBoS!

Thanks for your reply. Yes, I mean different frequencies. Just a new question. The first schematic that you sent me has a led on it. Should I to reemplace them for potentiometers or switchs? I would like to get audio from this oscillator. What would be the output audio?

Greetings
Javier
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PHOBoS



Joined: Jan 14, 2010
Posts: 2188
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PostPosted: Thu May 21, 2015 7:06 am    Post subject: Reply with quote  Mark this post and the followings unread

There's no LED on it, you're probably confused by the breadboard design but the text below it says:
Quote:
The red thing between pins 2 & 3 is the resistor; start w/ 100k, or variable (pot, photocell).

The audio output is labeled 'out'.

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