Re: Damned Projects!

On Tue, 31 Dec 2024 16:12:01 -0000 (UTC), "Don" <g@crcomp.net> wrote:

Carlos E.R. wrote:

Don wrote:

Electrolysis can cause the DC sensor to degrade over time.

>
Use graphite. Two pencil leads.

>
You can probably adapt this technique to the task:
>
   Make your own non-inductive graphite resistors
   <http://www.troelsgravesen.dk/graphite.htm>
>
Is electrolysis mitigation the sole benefit of using AC instead of DC?
Is there any other reason to prefer AC?

Operating at say a kilohertz or so gets one well above the flicker
noise down around zero hertz., greatly improving SNR.

Joe Gwinn