[sdiy] Substituting op-amps

[dj hohum]

On 7/13/07, Jason Proctor <jason at redfish.net> wrote:
> newbie chiming in: the LF442 looks like it's used mainly for CV
> summing and the potential range is quite wide. the TL072 is not
> rail-safe so it's not a good choice there. the MOTM opamp of choice
> for this application is the LT1013, also consider MC34072 and in a
> pinch, LM358.

Hi Jason,

Thanks for the info. After reading the construction notes it seems
other op amps were tried but some, including the TL-072, didn't work
well at all.  Ian Fritz suggested that the TL-072 might work better
with the addition of a cap. At any rate, I have a tube of LM358s and I
found one LF442 in my bin so I can try a few different op-amps and see
what works.