Hello,

judging the time scale of the scope the VCO is running at a very high
frequency (~20kHz). In this case you will see the resetpulse of the
comparator/transistor circuit.

You will find that at many VCOs. The most famous is the VCO of the
Yamaha VCO chip:
http://www.cs80.com/vco.html

Florian


Am 21.07.2015 um 09:34 schrieb vladoman@... [Doepfer_a100]:

>
>
> Hi,
>
> no the 110-1 is different, on the 110-1 there is a glitch at the peak of
> the triangle and this one is way less audible than this glitch at the
> bottom of the triangle on the 110-2.
>
> see the linked picture:
>
> IMG_20150709_174337.jpg