[sdiy] converting a 10v p to p to a 0-5 volt signal

[Kyle Stephens]

Heh, the bipolar 10 does seem popular (just wondering why though, if anyone has an answer) though I know the modules themselves don't feel it's very arbitrary ;)


_Kyle

--- On Tue, 5/19/09, Dan Snazelle <subjectivity at hotmail.com> wrote:

> From: Dan Snazelle <subjectivity at hotmail.com>
> Subject: RE: [sdiy] converting a 10v p to p to a 0-5 volt signal
> To: lightburnx at yahoo.com, "sdiy" <synth-diy at dropmix.xs4all.nl>
> Date: Tuesday, May 19, 2009, 6:58 PM
> 
> they are NOT arbitrary when you are feeding something that
> could be destroyed by too high a voltage swing or at best
> distort like mad! :)
> 
> this is why i want to be darn sure i am getting my voltages
> offset into a tiny range. oddly, my modular seems to have 3
> different voltage swings among the 20 modules i have built.
> 
> but MOST of em are +/- 5volts.
> 
> 
> 
> 
> > This is a problem I'll be facing eventually, once my
> system's fully built (level shifting and what not), what
> with various modules from different manufactures accepting
> different ranges of modulations voltages.
> > 
> > I know how to work things to suit their needs, but
> that aside, these standards are pretty arbitrary for the
> most part right?
> > 
> > 
> > _Kyle
> > 
> > --- On Tue, 5/19/09, Jason Proctor  wrote:
> > 
> >> From: Jason Proctor 
> >> Subject: Re: [sdiy] converting a 10v p to p to a
> 0-5 volt signal
> >> To: synth-diy at dropmix.xs4all.nl
> >> Date: Tuesday, May 19, 2009, 5:49 PM
> >> i did exactly this for my Arduino
> >> module. it bidirectionally 
> >> interfaces a +/-5v signal to the micro's 0-5v
> range.
> >> 
> >> turned out to be pretty easy - on the way in, chop
> the
> >> signal in 
> >> half, and bias with +2.5v. then reinvert. on the
> way out,
> >> do the 
> >> opposite. 1 dual opamp each way.
> >> 
> >> lmk if you want the details.
> >> 
> >> (i should also thank Tom Wiltshire here for his
> help
> >> getting me off 
> >> the ground with this stuff.)
> >> 
> >> 
> >>>tonight i was looking at my scope
> >>>
> >>>Checking the input into a circuit that was only
> able to
> >> take 0-5 volts
> >>>
> >>>Sure enough, the signal was between 0 and 5 but
> the
> >> sawtooth was clipped.
> >>>
> >>>So i am looking for a input block that can take
> either
> >>>5vp to p or 10v p to p (or any synth signal)
> >>>and spit it out as a 0-5 signal without
> squaring the
> >> top.
> >>>
> >>>
> >>>anyone know of a good circuit for this?
> >>>
> >>>thanks
> >>>
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> > 
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