[sdiy] 555-based ADSR that refuses to work with 9v

[Karl Ekdahl]

Hi all, i'm currently trying my luck adopting another
René Schmitz design to 9v. The 555-based adsr2;
http://www.uni-bonn.de/~uzs159/adsr2.png

I don't get the ADSR to work, it seems like the
reset-pin doesn't like the non-reset VCC feed it gets
from the transistors. It resets fine with the circuit
given but it can't be set again unless i manually move
the wire from Reset to VCC. Of course, i've measured
the collector tied to Reset, and it is approx. 8.8V
which should be more than fine as i understand it.

I just thought there might be some "magic" as with the
noise source that i had to tie to -9 instead of GND.
Btw, could someone explain that a little closer? JH
mentioned the reverse breakdown voltage or "zener"
voltage, BE, but that is stated to be 6V for a
BC547...  ??

anyhow, help appreciated with the ADSR so i can finish
this project!

Thanks

Karl