[sdiy] BUCHLA Music Easel Pulser question

[Dave Leith]

I have built this circuit and it "seems" to be functioning correctly.
It stops, triggers and runs continuously.

Here's the question: At slower speeds it creates the perfect downward
ramp as one expects. However at higher speeds at the top end of it's
range it produces a sawtooth with the top flattened. Not sure if this
is normal but it seems to be created by the capacitor (910pf to
ground) that is in the reset circuit and stretches the length of the
reset pulse. The cap is on the front panel. If the cap is removed one
gets a perfect downward ramp at all frequencies. The reset circuit is
connected between pulser pls in <3> and pulser pls out <2>

So is this normal or not? If it's normal then why? To me when using
the pulser at audio rates this modified ramp seemed to give a better
sound. If this operation is incorrect well I guess it's back to the
trouble shooting :-)

The circuit is available at
<http://rubidium.dyndns.org/~magnus/synths/companies/buchla/Buchla_2080_4_200.jpg>

and the front panel wiring is at
http://rubidium.dyndns.org/~magnus/synths/companies/buchla/Buchla_2080_13B_200.jpg

thanks Dave