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

Dan Snazelle subjectivity at hotmail.com
Wed May 20 03:58:06 CEST 2009

```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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>
>
>
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