Thanks Craig. That was what I had expected. I encountered some=20 strange wording.=20 -----Original Message----- From: Clewell, Craig [mailto:cclewell@xxxxxxxxxxxxxx] Sent: Monday, September 08, 2003 3:18 PM To: Moeller, Merrick Subject: RE: [SI-LIST] Return Path Usage Merrick,=20 For all intent and purposes DC, VRef, Vcontrol, etc...are all ground. = Think about the frequency you are dealing with and the affect on impedance. Reactance is not an issue at DC since the Real parts of the impedance = are >> than the reactive parts. The reactive parts are frequency dependant, = and the frequency of DC, etc... is zero for all intent and purposes. One issue that may arise is ground bounce. Since you are going to have = one voltage on the ground plane on one side of the connector and possibly a different voltage on the ground plane on the side that is holding the = other half of the connector there will be a difference in the ground plane voltages. This is going to be pretty small, and is neglected quite = often. CC=20 -----Original Message----- From: Moeller, Merrick [mailto:mmoeller@xxxxxxxxxxxxxxx] Sent: Monday, September 08, 2003 3:53 PM To: Si-List (E-mail) Subject: [SI-LIST] Return Path Usage What issues could arrise by using a return path for DC voltage, = Reference voltage, or on-off control voltage? Would low AC impedance path be interupted or changed in any manner?=20 Regards, Merrick M. Moeller=20 ------------------------------------------------------------------ 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 archives are viewable at: =20 //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages=20 Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu =20 ------------------------------------------------------------------ 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 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