[sdiy] OK, so...there's this guy...

[Peter Grenader]

Cool..  Thanks for the tip.  I'll pass it on to 'the guy'.




Paul Schreiber wrote:

> This "guy" needs to read up on 'synchronous detectors'.
> 
> Paul S.
> another guy who once had to detect a change of 15 fF (yep, femtofarads)
> 
> 
> 
> ----- Original Message -----
> From: "Peter Grenader" <peter at buzzclick-music.com>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Friday, September 26, 2003 12:46 PM
> Subject: [sdiy] OK, so...there's this guy...
> 
> 
>> And let's say, for argument sake, that this guy is working of creating a
>> logical true (high) when his finger is placed on a piece of conductive
>> material, be it a small strip of metal or a coin, or anything with similar
>> conductive qualities.
>> 
>> And let's just say that he's got it to the point where a signal will in fact
>> rise from ground to about 2 tenths of a volt, albeit one that's looks to be
>> nothing more than amplified noise in that it's a somewhat messed up sine
>> wave with a period of about 15 ms.
>> 
>> And let's say, for argument sake, that this guy has tried a few tricks in an
>> attempt to convert that to a linear DC level of .2 volts without success.
>> 
>> What would you suggest I, I mean... *this guy*, try next?
>> 
>> Any suggestions?
>> 
>> thanks in advance,
>> 
>> Peter
>> 
>> 
>> 
>> 
>> 
>