AW: ASM-1 up and running

Haible_Juergen#Tel2743 HJ2743 at
Mon Oct 7 20:00:00 CEST 1996

>    One thing that has me stumped is that the with really low frequencies
> (like less than 1 hz), the output of the LFO seems to be asymetrical. On
> the triangle wave, the rising part takes a lot longer than the falling
> part. On the square wave, the voltage stays low for much longer than it
> stays high. I believe I just used a ceramic dip capacitor, could this be
> the problem ? Apparently it's discharging faster than it's charging at low
> frequencies. Also, although my LFO goes well up into the audio range, it
> stops oscillating when it gets below around .2 hz. Of course I'd like the
> LFO to do really slow sweeps. As far as I know I put the proper components
> in.
>   Anyone have any suggestions ?

Do you have offset compensation on the opamp that forms the integrator?
(posted about this a few weeks ago ...)


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