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

[Paul Schreiber]

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
> 
> 
> 
> 
>