[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
gEDA-user: Re: Looking for a project
On Sun, 01 Apr 2007 13:32:44 +0100, Peter Clifton wrote:
> On Sat, 2007-03-31 at 22:37 -0400, DJ Delorie wrote:
>> So, would an isolated probe need an isolated power supply also? Those
>> could get expensive. Isolated power supply, opto-isolated digital gain
>> control, opto-isolated return data stream, etc.
>
> Yes, but they can be done very simply, or picked up as ready built and
> encapsulated modules.
>
> All it needs is a small ferrite transformer
Or even simpler, supply the instrumentation amp with 9V power packs. Even
a cheap, wall bug with rectified regulated voltage will do, if all
voltages are low enough. This is how I did it, when I needed a
differential probe without the notorious groundloop.
---<(kaimartin)>---
--
Kai-Martin Knaak
http://lilalaser.de/blog
_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user