The classic book is Ralph Morrison -- Grounding and Shielding Techniques. ISBN: 0471245186 For ideas on cable shielding there is nothing better than Henry Ott -- Noise Reduction Techniques in Electronic Circuits. ISBN: 0471850683 Curt Curt McNamara. P.E. Senior Electrical Engineer Logic Product Development 411 Washington Ave. N Suite 101 Minneapolis, MN 55401 Tel 612-436-5178 Fax 612-672-0443 curtm@xxxxxxxxxxx www.logicpd.com <file://www.logicpd.com> This message (including any attachments) contains confidential information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this message, or the taking of any action based on it, is strictly prohibited. ________________________________ From: si-list-bounce@xxxxxxxxxxxxx on behalf of Mike S. Sent: Sat 2/18/2006 12:13 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Electrical wiring questions Thanks for the replies Steve and Deniel. Any book suggestions? B. Mike On 2/18/06, dgun@xxxxxxxxxx <dgun@xxxxxxxxxx> wrote: > Since you are stuck with a single-ended sensor, I don't see how > the differential ADC will cancel any noise. Probably best to > just use it in single-ended mode. > > -- > Daniel > > > > From: "Mike S." <powersurf@xxxxxxxxx> > > Hello to all, > > I would like to ask for some advice and orientation on electrical > > wiring matters! > > I believe this configuration is very common: > > I have an analog sensor with 3 wire leads (Vcc -5 V-, GND, signal) > > that will be sampled by a fully differential ADC that is on a separate > > PCB. I only have one 5 V power supply to power both the sensor and the > > ADC PCB (this card is also 5V). I believe that the best way to connect > > this setup is to power the ADC PCB and then, with a single connector > > from the ADC PCB to sensor, containing 3 pins (Vcc,GND and signal). > > This way would avoid ground loops. The problem is that I don't have > > such a connector in the ADC PCB. In fact, I only have a connector with > > 2 pins (Signal+ and Signal-, that are the ADC differential pins). So > > the sensor must be powered from the same power supply, but with a > > different cable that will not originate in the ADC PCB, but directly > > in the power supply. > > Since the connector to the sensor in the ADC PCB doesn't have any > > ground pin the sensor return current would have to return in the power > > supply ground wire. Although the ADC has fully differential inputs > > (that would cancel any induced currents in the loop) I don't think > > this is a good solution. Is it? > >=3D20 > > Any suggestions or comments are welcome. > > References like books or other publications that deal with these > > matters are also welcome. > >=3D20 > > Thanks in advance > > Best Regards > >=3D20 > > B. Mike > > > --=3D20 > ___________________________________________________ > Play 100s of games for FREE! http://games.mail.com/ > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List FAQ wiki page is located at: > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > List technical documents are available at: > http://www.si-list.org > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu