[sdiy] Triangle-to-saw conversion

[Magnus Danielson]

David G. Dixon wrote:
>> The lack of square wave can be remedied by setting up a differentiating
>> circuit (integrator with R and C interchanged) and then put a comparator
>> (against 0V) on that output to form a proper square. Then just continue
>> as the general plan, i.e. a CMOS-switch controlled by the square to
>> provide +1/-2 switched gain. Not too complex.
> 
> Doesn't the existence of a triangle wave always imply the existence of a
> square wave (or, at least, a square-ish wave) to drive the oscillator?
> 

You *should* have it, but if you don't... the above solves it.

Cheers,
Magnus