[sdiy] LM13700 single supply?

[Anthony Rolando]

You might get comparable results with the figure 15 VCO circuit from the 
National Semi Applications for the LM13700 (which does not use a 555 and is 
thus simpler; might consume less current as well). The single supply LFO I 
did was based on that one...

TR



>From: flightofharmony at comcast.net
>To: synth-diy at dropmix.xs4all.nl (synth DIY)
>Subject: RE: [sdiy] LM13700 single supply?
>Date: Fri, 15 Jun 2007 17:57:47 +0000
>
>Instead of trying to explain the circuit I have posted the schematic and 
>accompanying text on my site here: http://www.flightofharmony.com/VCO.html
>
>(I don't know if this is kosher, so the page will be deleted tonight.  
>Please don't sue me Mr. Jung!)
>
>~flight
>
>p.s. - this is send attempt #2, Outlook and SDIY just don't get along...
>
>-----Original Message-----
>From: synth-diy-bounces at dropmix.xs4all.nl 
>[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Paul Perry
>Sent: Friday, June 15, 2007 8:44 AM
>To: Synth-diy at dropmix.xs4all.nl
>Subject: RE: [sdiy] LM13700 single supply?
>
>Infuriatingly, I only have the 1st ed of Jung's 555 book - and it doesn't
>have this.
>
>But, unless he is doing something exotic with the 3080 (as in that 
>notorious
>VCA) then the 3080 can be replaced by half a 13700.
>
>Can you say what is happening in the circuit?
>
>Paul Perry Melbourne Australia
>
>-----Original Message-----
> >I am experimenting with the exponential VCO from Walter Jung's IC Timer
> >Cookbook 2nd ed., p. 239.  I want to use an LM13700 in place of the 
>CA3080,
> >but he has this circuit set up for single-supply. Can the LM13700 be used
> >this way?
>
>
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