Cgs synth

Still staring at this circuit. I'm determined to figure it out :)

Is the End Out supposed to act like a flip flop?

Is Pin 1 of the LM3900 supposed to be tied to ground?

Thanks for any and all suggestions,
-dustin

--- In cgs_synth@yahoogroups.com, "colorful.bottle" <colorful.bottle@...> wrote:
>
> Hello All,
>
> Having a bit of trouble...my End Out seems to be putting out a constant ~8V output. It follows the input inversely. When I gate the input with 5V it will go to 0V according to the Rise pot and return to ~8V according to the Fall pot.
>
> I am breadboarding the circuit and not working from the PCB. I wanted to learn more about the different aspects of the circuit but this part has proven to be very hard to troubleshoot.
>
> Any thoughts?
>
> Thanks,
> -dustin
>