Updated ADSR-circuit

[Jonas Karlsson]

I should have sent you this message earlier, but I have been out of town for a few days.

The ADSR schematics are now updated. I checked the 4066 datasheet and found that a current-limiting resistor of 250 Ohms is enough to give a maximum current of 20mA. This is the "Absolute maximum rating" of the 4066. 

The capacitor is changed to 10nF. This gives a minimum time of about 5.8ms and the slowest possible time is about 12 seconds. (Simulated times)

The schematics are still at http://www.edu.isy.liu.se/~z93jonka/synt.html

PS.
This is maybe off the subject for this list, but please have a look at my filter synthesis program, Fsyn. It is far from finished, but it can at least calculate the poles for a butterworth and chebychev lowpass filter from a specification. If you like it, let me know, I might get inspired and finish it ;-)

The program is at http://www.edu.isy.liu.se/~z93jonka/Fsyn.html

This page is in Swedish, but you should be able to find the correct link anyway.

Jonas Karlsson