[sdiy] Giga-Ohm Resistors--Where?

[James Patchell]

I have used resistors of this size...You do need to make sure you clean 
everything pretty good.

One problem with 1E9 size resistors is the distributed capacitance.   But 
if you want a real challenge, try using 1E12 sized resistors.  The circuit 
I used these on were mounted on a quartz substrate, so leakage wasn't much 
of a problem, but 1E12 sized resistors have enough of their own problems to 
more than make up for that :-).


At 09:51 PM 9/7/2003 +0200, Theo wrote:
>Wow, these things DO exist??
>Still see quite a bit of trouble using them for DIY though.
>For example the resistance of the PCB material (+ flux residue) could very
>well mess up the 3G value of the component.
>
>Theo
>
>
>
>----- Original Message -----
>From: andy <mcphive at corrupt.net>
>To: <synth-diy at dropmix.xs4all.nl>
>Sent: Sunday, September 07, 2003 8:40 PM
>Subject: Re: [sdiy] Giga-Ohm Resistors--Where?
>
>
> >
> > This is an interesting article I found on gigaohm resistors...
> >
> >
> >
>http://www.reed-electronics.com/ednmag/index.asp?layout=article&articleid=CA
>84282&rid=0&rme=0&cfd=1
> >
> > On Sun, 7 Sep 2003, Glen wrote:
> >
> > > I've been looking at some schematics recently that mention 1G and 3G
> > > resistors. Does anyone know of a place to purchase such large value
>resistors?
> > >
> > > 10M is the largest resistor that I've been able to find so far. I really
> > > wouldn't like the idea of chaining 300 10M resistors in series, just to
>get
> > > a single 3G resistor.
> > >
> > > thanks,
> > > Glen Berry
> > >
> >

         -Jim
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