Tried to be neutral, but couldn't avoid being influensed, hence following reflection: How on earth do you connect car electronics to ground? Remove tires and run on the rims? And isn't water better than earth? Connection to digital/analogue water...think yachtsmen would prefer water the hull rather than ground it. And why do we speak about return? Current I've used for my central heater has never returned. Inge -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Scott Decker Sent: den 21 juni 2007 00:39 To: [log in to unmask] Subject: Re: [TN] Different Types of Ground NTC OK, this negative talk is potentially grounding everything I thought was positive. Hummm, is that a double negative? Anyway, perhaps something I can offer to the group is this. If you plan on being an electric eel trainer, you should be well grounded in underwater fundamentals. I my self will not be looking into that profession at this time although I will be looking for a new job at the end of the month... sigh, ah, the dreaded cutbacks... Well such is life in the big city... I shall stay grounded and keep a positive attitude for a potential new position and stay current in the field. OK, consider the dead horse beat some more... :-) :-) Scott Decker AKA: PadMasterson Hypercom CAD Ph:602-504-5344 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Neil Maloney Sent: Wednesday, June 20, 2007 3:15 PM To: [log in to unmask] Subject: Re: [TN] Different Types of Ground NTC Because they can bring us all back down to Earth, potentially speaking. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Chris Ball Sent: Wednesday, June 20, 2007 11:42 AM To: [log in to unmask] Subject: Re: [TN] Different Types of Ground NTC Wire you guys beating this into the ground? "Whittaker, Dewey (EHCOE)" <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 06/20/2007 11:58 AM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to "Whittaker, Dewey (EHCOE)" <[log in to unmask]> To [log in to unmask] cc Subject Re: [TN] Different Types of Ground NTC At least it will be on my own accord. Dewey -----Original Message----- From: John Burke [mailto:[log in to unmask]] Sent: Wednesday, June 20, 2007 8:52 AM To: 'TechNet E-Mail Forum'; Whittaker, Dewey (EHCOE) Subject: RE: [TN] Different Types of Ground NTC Any more comments like that on this current thread Dewey and I am afraid that you will be grounded...... John Burke (408) 515 4992 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE) Sent: Wednesday, June 20, 2007 8:19 AM To: [log in to unmask] Subject: Re: [TN] Different Types of Ground NTC I'm glad you're keeping up with the current humor. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis Sent: Wednesday, June 20, 2007 7:54 AM To: [log in to unmask] Subject: Re: [TN] Different Types of Ground NTC If they were phased, they would certainly be fazed. Brian Bev Christian wrote: > Speaking of "keep the various grounds apart and connected correctly" I > once worked for a company (NOT Nortel, they know better) that when I > insisted that we have ESD protection in the building, they hooked all > the assemblers to the electrical outlets on the shop floor. Gulp. > Bev > RIM > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar > Sent: Wednesday, June 20, 2007 2:32 AM > To: [log in to unmask] > Subject: Re: [TN] Different Types of Ground > > Wee is asking on good grounds and Donald's reply is excellent. I want > add this, Wee: when you perform electrical tests, it's important to > connect the probes > to the adequate ground or return, as some call it. Checking digital > signals with probes on analogue ground (AGnd, AG) can give very > misleading results, as well as doing analogue measurements connected to > digital ground (DGnd, DG), just to give example. As Donald explained, > it's VERY important to keep the various grounds apart and connected > correctly. Inge > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Donald Kyle > Sent: den 19 juni 2007 14:36 > To: [log in to unmask] > Subject: Re: [TN] Different Types of Ground > > Hello, Wee Mei > > In the broadest sense GROUND refers to the return wire or object or path > that is connected to a voltage source (clouds, batteries, power > supplies, power lines). > > With regard to electronic equipment, the different types of grounds are > just names for different return paths to a power supply. > > For example, if a circuit board had an analog section and a digital > section the circuit designer may have two or three different power > supplies for each section. > > The digital power supplies most likely would have a common connection > perhaps call DIGITAL GROUND and the analog sections would have a common > connection called ANALOG GROUND. > > Depending on the circuit design, these Grounds or return paths may be > connected together at some point or not. > > In the case of lighting or static electricity (ESD), objects like you > and me or a door knob or your favorite electronic device can become the > GROUND path to earth. In these cases the ground path through the object > would be considered an unwanted ground path. > > Chassis ground can refer to the metal box that electronic circuits are > housed in or the frame of your car. > > If you are looking at AC power in your home for example, there are two > types of ground. One is called the safety ground (green wire) and the > other is called the neutral or ground (white wire). These two are > connected together at the breaker box. The safety ground is connected > to the metal chassis of the electrical device to protect you from > unwanted electrical currents. > > I hope this helps. > > Donald Kyle > > > > > At 03:25 AM 6/19/2007, you wrote: >> Hello, >> >> Can someone share with me the different types of grounds : ESD ground, >> digital ground, analog ground, chassis ground, earth ground, electrical > >> ground, anymore other types of grounds . . and their functions and >> applications. >> >> Thanks in advance. >> Wee Mei >> >> --------------------------------------------------- >> Technet Mail List provided as a service by IPC using LISTSERV 15.0 To >> unsubscribe, send a message to [log in to unmask] with following text in >> the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt >> or (re-start) delivery of Technet send e-mail to >> [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing >> per day of all the posts: send e-mail to >> [log in to unmask]: SET Technet Digest >> Search the archives of previous posts at: >> http://listserv.ipc.org/archives Please visit IPC web site >> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional >> information, or contact Keach Sasamori at [log in to unmask] or >> 847-615-7100 ext.2815 >> ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 To > unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or > (re-start) delivery of Technet send e-mail to [log in to unmask]: SET > Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the > posts: send e-mail to [log in to unmask]: SET Technet Digest Search the > archives of previous posts at: http://listserv.ipc.org/archives Please > visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for > additional information, or contact Keach Sasamori at [log in to unmask] or > 847-615-7100 ext.2815 > ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 To > unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to > [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to > [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: > http://listserv.ipc.org/archives > Please visit IPC web site > http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional > information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 > ext.2815 > ----------------------------------------------------- > > > > --------------------------------------------------------------------- > This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. 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