On Tue, 2004-10-12 at 22:22, Wan Zulhelmi Wan Ahmad Kamar wrote:
> Any suggestion on the opamp.. i use 741 b/cause it's safer since it's general.

Well, that's the problem right there, while the 741 is about as bad as
it gets when it comes to op amps, there really isn't anything more
common then it. FWIW I HATE the 741, way to troublesome a beast to deal
with compared with modern alternatives.

Can't really recommend anything else without knowing what's available to
you. Off hand I'd recommend a CMOS rail to rail single supply opamp
above all, eliminates many of the issues that make the 741 really hard
to deal with. TTYL

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