Odp: [sdiy] inversion, CMOS, etc.

[patchell]

    You can avoid the .6 volt diode drop by using Ideal Diode circuits.

http://www.oldcrows.net/~patchell/archives/idealdiode.html

media.nai at rcn.com wrote:

> >What I'd like to do is combine the HW rectifier with the passive summer
>
> The problem with using a rectifier is the diode drop (typically .6V)
>
> >Something like this:
> >
> >/\__/\__/\__/\__/\   pot turned all the way down, +5V peak
> >
> >
> >/\  /\  /\  /\  /\
> >__\/__\/__\/__\/__\  pot turned all the way up, +10V
> >
> >i'd like to make this function voltage controllable also, by adding another
> >summer between the signal and the input from an LFO or other LF voltage
> >source.
>
> You might want to check out the MOTM-320 to pedal converter at
> wiseguysynth.com.  It turns a bipolar LFO into a single-sided LFO.
>
> If you want to make the amount of offset "voltage controlable", then what
> you want is a DC mixer with reversing attenuators.  Check out the Oakley
> Multimix2.  There are plans for a Multimix3, but I don't know if it is out
> yet.
>
> If you want to make the amount of LFO voltage controlable, you can do this
> by combining a mixer with a VCA.

--
 -Jim
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