An envelope filter based on the Dr. Q.
Download Build Diagram
Download Etch Template
This entry was posted
on Friday, June 8th, 2007 at 1:14 pm and is filed under Projects.
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July 2nd, 2008 at 1:13 pm
How come this uses a different IC than the schematic and diagram on GGG and GeoFex? They call for a TL072, but I could only find a TL082. Will the TL082 replace the TL072 in the GGG version? And can I use the TL082 in your schematic? Yours looks cleaneer.
July 2nd, 2008 at 3:00 pm
Also, I hate to be a pest, but can you post a parts list for your diagrams? Thanks for the great blog!
November 3rd, 2008 at 6:09 pm
Please can you direct me to a circuit diagram. I can not get hold of the 4558. Can you suggest an equivalent.
Regards Kevin