[sdiy] Op amp for saw core VCO

[Michael Zacherl]

On 27.Oct 2014, at 20:23 , Ian Fritz <ijfritz at comcast.net> wrote:

> It's working fine here.  Of course, since I'm on Comcast internet that may not be a good test.  :-)  If you continue to have trouble I could mail you the page and graphic.

thanks! As always, it worked in an instant right after I wrote the mail. 
That, after trying for a couple of hours … long lines, probably ;)

Nice core, BTW! ;)
m.

> At 12:02 PM 10/27/2014, you wrote:
> 
>> On 26.Oct 2014, at 19:55 , Ian Fritz <ijfritz at comcast.net> wrote:
>> 
>>> You don't want to skimp here.  You need low offset, hi impedance and hi speed.  The OPA 134 is what I use.  The OPA 602 is an even better device, but a bit of an overkill, IMO.  A TL074 gives noticably poorer performance.  My designs are here:
>>> http://www.electro-music.com/forum/topic-28713-25.html
>>> http://home.comcast.net/~ijfritz/sy_cir2.htm
>> 
>> is it just me or is the comcast link too slowly or not responding?
>> thanks, m.



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