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1. Crazy electrical question (score: 1): Author: Ed Van Scoy <edvs@yahoo.com>; Date: Tue, 18 Jul 2006 13:01:56 -0700 (PDT); A friend sent me this baffling note from a friend, any help here would be greatly appreciated. "In our bedroom we have a electrical outlet that is driving me nuts. Seems when you plug in a clock to t; /html/shop-talk/2006-07/msg00024.html (8,267 bytes)
2. RE: Crazy electrical question (score: 1): Author: "Randall" <tr3driver@comcast.net>; Date: Tue, 18 Jul 2006 13:55:41 -0700; Noise on the line can do that. Look for anything in the area that might be putting noise back into the AC line, like fluorescent lights, electric motors that don't run all the time, or possibly a ba; /html/shop-talk/2006-07/msg00026.html (8,194 bytes)
3. Re: Crazy electrical question (score: 1): Author: Pat Horne <pjhorne@mail.utexas.edu>; Date: Tue, 18 Jul 2006 16:04:31 -0500; Sounds like your friend has a poor connection either on that outlet or one of the outlets between that one and the breaker panel that is arching. If that outlet is controlled by a switch, it could b; /html/shop-talk/2006-07/msg00027.html (9,896 bytes)
4. Re: Crazy electrical question (score: 1): Author: "john niolon" <jniolon@bham.rr.com>; Date: Tue, 18 Jul 2006 16:00:16 -0500; it's not a matter of watts or for that matter volts... it's frequency. Electric clocks get their time keeping ability from the 60 cycle frequency of the A.C. supplied to the house. I've never seen a; /html/shop-talk/2006-07/msg00028.html (9,243 bytes)
5. crazy electrical question (score: 1): Author: <bottorff25@verizon.net>; Date: Tue, 18 Jul 2006 16:26:40 -0500 (CDT); Most digital clocks use the frequency of the a/c current in the line as their "time". If this one outlet somehow is generating a slightly higher frequency then the clock would run fast. I would ident; /html/shop-talk/2006-07/msg00029.html (7,780 bytes)
6. Re: Crazy electrical question (score: 1): Author: Gt6steve@aol.com; Date: Tue, 18 Jul 2006 17:25:15 EDT; John's got it exactly right here. The frequency on that circuit is being distorted by a chopped current load on something else on that circuit. By the time it goes all the way to the load center and; /html/shop-talk/2006-07/msg00030.html (8,176 bytes)
7. Re: Crazy electrical question (score: 1): Author: James Juhas <james.f.juhas@snet.net>; Date: Tue, 18 Jul 2006 17:27:40 -0400; Ed, I'm not sure if this matters, but are these digital or analog clocks? Analog clocks, from what I recall, keep time via a synchronous motor that controls its speed in response to 60hz current. Dig; /html/shop-talk/2006-07/msg00031.html (9,877 bytes)
8. RE: Crazy electrical question (score: 1): Author: "Randall" <tr3driver@comcast.net>; Date: Tue, 18 Jul 2006 14:41:38 -0700; Just to clarify, John, the problem comes in with the circuit that samples the line frequency. Since transformers are expensive and line regulation is poor, the usual circuit is a simple resistor and; /html/shop-talk/2006-07/msg00032.html (8,799 bytes)
9. RE: crazy electrical question (score: 1): Author: "Mullen, Tim (IT Solutions)" <Tim.Mullen@ngc.com>; Date: Tue, 18 Jul 2006 18:09:11 -0400; Most clocks in general. The analog clocks are set up for motors that turn in response to the 60 cycle frequency too. For somewhere I remember learning that the power companies very carefully control; /html/shop-talk/2006-07/msg00033.html (8,204 bytes)
10. Re: crazy electrical question (score: 1): Author: "David Scheidt" <dmscheidt@gmail.com>; Date: Tue, 18 Jul 2006 21:14:39 -0400; It's very accurate over long intervals -- a day or more. A single cycle can off a fair amount. -- David Scheidt dmscheidt@gmail.com; /html/shop-talk/2006-07/msg00034.html (8,306 bytes)
11. Re: crazy electrical question (score: 1): Author: Ed Van Scoy <edvs@yahoo.com>; Date: Tue, 18 Jul 2006 20:06:56 -0700 (PDT); Thanks to all for the suggestions, I passed them on to my friend and will let you all know what the cause is when he finds it! Ed Tired of spam? Yahoo! Mail has the best spam protection around; /html/shop-talk/2006-07/msg00035.html (8,791 bytes)
12. RE: crazy electrical question (score: 1): Author: "Mullen, Tim (IT Solutions)" <Tim.Mullen@ngc.com>; Date: Wed, 19 Jul 2006 11:06:52 -0400; Yes, you are very correct. They will adjust the frequency as needed to speed up or slow down so that over time, it will be very accurate. It can vary over the short time (minutes), but be very accura; /html/shop-talk/2006-07/msg00036.html (7,909 bytes)

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