[sdiy] 1.0 kohm "tempco" for VCO / sub octave question

[Ingo Debus]

Am Montag, 01.03.04 um 21:34 Uhr schrieb Oren Leavitt:

> For sub-octaves, a 4013 dual flip-flop will give you the two sub 
> octaves with one chip. Feed it directly from the output of the pulse 
> comparator thru a diode to cut off the negative half of the signal so 
> that it is within the 0 to V+ range of the CMOS.
>

You can also add the original saw and the suboctave square to get a 
suboctave saw. Just an opamp and three resistors.

Ingo