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N_Cook <diverse@tcp.co.uk>: Jun 22 07:40AM +0100 Anyone any insight into this error? Yesterday , coincidently? the longest day. Set the alarm function for 06:30. Luckily woke just after 06:00 and decided to get up . Synchronous mains clock read 06:08 but radio-code clock read 04:08, minute and seconds agreeing with another radio-code clock but it had decided to go east 2 time zones. Still like that about 07:00 but on returning in the evening the erroneous clock had reset itself. How to predict when this error will reoccur? any amelioration, plenty of LCD contrast so presumably the batteries are ok?

Jeff Liebermann <jeffl@cruzio.com>: Jun 22 12:16AM -0700 >that about 07:00 but on returning in the evening the erroneous clock had >reset itself. How to predict when this error will reoccur? any >amelioration, plenty of LCD contrast so presumably the batteries are ok?   Nope. My clocks are just fine. Sometimes my WWVB based clocks go nuts from RF noise in the shop. They then reset themselves after midnight, when 60 KHz propagation is best. In the UK, you're probably using MSF. <http://www.npl.co.uk/science-technology/time-frequency/products-and-services/time/msf-radio-time-signal> They do have some scheduled outages, but that's not the problem this time: <http://www.npl.co.uk/science-technology/time-frequency/products-and-services/time/msf-outages> Offhand, I would guess(tm) that your unspecified model radio clock has a dying battery. My various clocks do some rather strange things when the battery is low.   You might want to fasten your seat belt on June 30th. <http://www.dailymail.co.uk/sciencetech/article-3131840/The-longest-day-Leap-second-make-61-second-minute-end-June-experts-warn-break-internet.html> <http://www.wired.com/2015/01/leap-second-rattle-internet-theres-plot-kill/> <http://money.cnn.com/2015/01/13/technology/leap-second/> The good news is that you'll get an extra second of sleep during the night of June 30th.   More: <http://www.leapsecond.com/java/nixie.htm> <http://802.11junk.com/jeffl/crud/GPS-vs-UTC.jpg>   At the tone, the time will be: <http://www.leapsecond.com/java/gpsclock.htm> Ummm... never mind.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

N_Cook <diverse@tcp.co.uk>: Jun 22 09:41AM +0100 On 22/06/2015 08:16, Jeff Liebermann wrote:   > At the tone, the time will be: > <http://www.leapsecond.com/java/gpsclock.htm> > Ummm... never mind.   Not specified as litterally no name/model on it. Casio watch, I compared it to , was fine . At least I now know not to rely on "no-name" and use it in alarm mode with another alarm clock. If it went erroneous "to the west" it would not be so problematic

"Ralph Mowery" <rmowery28146@earthlink.net>: Jun 22 09:59AM -0400 "N_Cook" <diverse@tcp.co.uk> wrote in message news:mm8aj3$o5i$1@dont-email.me... > 07:00 but on returning in the evening the erroneous clock had reset > itself. How to predict when this error will reoccur? any amelioration, > plenty of LCD contrast so presumably the batteries are ok?   As the minuits agree, but the hours are off, I would look for a setting as to which time zone the clock is set for.

N_Cook <diverse@tcp.co.uk>: Jun 22 04:17PM +0100 On 22/06/2015 14:59, Ralph Mowery wrote: >> plenty of LCD contrast so presumably the batteries are ok?   > As the minuits agree, but the hours are off, I would look for a setting as > to which time zone the clock is set for.   I've never seen an option to change country of use, or any legend like LON for London as in the Casio. Automatically seems to selct UK , the strongest signal? along with automatic daylight saving changes. Just pressed reset to remind me that no country option comes up and within 10 minutes had sync'd with the Casio , in effect. Tried Google Images but this one not seen in the first 3 pages of pics of silver desktop "radio controlled" LCD clocks

N_Cook <diverse@tcp.co.uk>: Jun 22 04:25PM +0100 So perhaps that was the failure mechanism. Rugby went down for maintainence or its signal got locally shadowed/echoed/interferred with and if Darmstadt was a stronger/clearer? signal , perhaps reset itself to CET time for a while. The Casio having a preset station option , it may loose updating but it would not try to find another code source.

N_Cook <diverse@tcp.co.uk>: Jun 22 04:35PM +0100 On 22/06/2015 16:25, N_Cook wrote: > and if Darmstadt was a stronger/clearer? signal , perhaps reset itself > to CET time for a while. The Casio having a preset station option , it > may loose updating but it would not try to find another code source.   Ah, CET is in advance of GMT (BST - 1 ) not behind, and I doubt there is a transmitter for the Cape Verde Islands.

Phil Allison <pallison49@gmail.com>: Jun 21 08:19PM -0700 ** Hi,   not some relic from the 1960s, but a near new looking combo called an "AC15HW1X". The HW indicates the deluxe "hand wired'" version - see pic.   http://www.planetz.com/wp-content/uploads/2011/03/2010-11-05-Vox-AC15HW1-003.jpg   Features a bright blue, 12 inch Alnico magnet speaker, 2 x EL84s, 3 x ECC83s and a 6CA4 rectifier - but no tremolo circuit and no pentodes in the preamp so not a clone of the original AC15.   Usual assortment of faults including intermittent sound, cracking noises and completely shot EL84s.   AC30 & AC15 amps of all ages run the EL84s deep into class A and way too hot - so I normally change the wire wound cathode resistor to one of double the value and bypass it with a pair of 7.5V, 5W zeners in series. This changes it to class AB, similar to using grid bias. The 84s now run much cooler and put out a tad more power too.   As you can see from the pic, the tag board is wired with mainly carbon comp resistors - for a "vintage sound" no doubt. Should be no surprise that some of them had gone high in value, one 220kohms reading 457kohms.   So, a fake vintage amp with real vintage faults !!   BTW, on the back in small print it says:   " Made in Vietnam ".   Tom Jennings must be rotating in his grave....     ... Phil

"Arfa Daily" <arfa.daily@ntlworld.com>: Jun 22 01:51PM +0100 "Phil Allison" <pallison49@gmail.com> wrote in message news:0ff17f1c-6573-4433-aa63-c72515eeb6a7@googlegroups.com...   > " Made in Vietnam ".   > Tom Jennings must be rotating in his grave....   > ... Phil   Yebbut ya gotta say it is actually quite nicely made in terms of the soldering quality and how nicely regimented the components are on those strips, Phil ... :-)   At least it is readily fixable, which is more than can be said for some 'modern' offerings !   Arfa

whit3rd <whit3rd@gmail.com>: Jun 21 10:58AM -0700 > On Friday, June 19, 2015 at 12:19:59 AM UTC-4, captainvi...@gmail.com wrote: > > Just wanted to get back to the group about this AC motor that was running in reverse after being disassembled and then put back together. It turns out that reversing the brushes did indeed reverse the direction of the motor. We can't argue with success, but I still don't fully understand why this is so. Can anyone please explain this to me? Thanks, Lenny   > I'm just curious, when this plate was moved did all the brushes rotate the same amount, or perhaps just two? Because if you think about that if they all moved the same as a group it doesn't make any sense. Lenny   I think it makes sense. The commutator selects a winding. The rotation of brushes determines whether winding #1 puts a new rotor N pole CW of the stator's S pole, or winding #2 puts a new rotor N pole CCW of the stator's S pole

all2001@spambog.com (Wolfgang Allinger): Jun 21 03:52PM -0300 On 21 Jun 15 at group /sci/electronics/repair in article 88958a1d-8253-423f-bfd0-1c1b1e17949e@googlegroups.com >rotation of brushes determines whether winding #1 puts a new rotor N >pole CW of the stator's S pole, or winding #2 puts a new rotor N pole >CCW of the stator's S pole   on an AC Motor are no permanent S and N poles ;( Its because Alternating Current = AC!         Saludos (an alle Vernünftigen, Rest sh. sig) Wolfgang   -- Wolfgang Allinger, anerkannter Trollallergiker :) reply Adresse gesetzt! Ich diskutiere zukünftig weniger mit Idioten, denn sie ziehen mich auf ihr Niveau herunter und schlagen mich dort mit ihrer Erfahrung! :p (lt. alter usenet Weisheit) iPod, iPhone, iPad, iTunes, iRak, iDiot

M Philbrook <jamie_ka1lpa@charter.net>: Jun 21 07:39PM -0400 In article <DJHb4JrEQoB@allinger-307049.user.uni-berlin>, all2001 @spambog.com says... > Its because Alternating Current = AC!   > Saludos (an alle Vernünftigen, Rest sh. sig) > Wolfgang   Yeah but, it's a series motor so that means it can operate on AC or DC..   As for the communtator being out by 1.5" or so, that isn't anything to worry about because in the first short running time that should smooth out, unless there is some bearing play? You really don't want that.   Jamie

"hrhofmann@sbcglobal.net" <hrhofmann@sbcglobal.net>: Jun 21 07:53PM -0700 It's good to know Sam Goldwasser is still around, his posts are almost always 100 correct!!!

all2001@spambog.com (Wolfgang Allinger): Jun 22 12:11AM -0300 On 21 Jun 15 at group /sci/electronics/repair in article MPG.2ff115271eb155a4989c33@news.eternal-september.org >> Its because Alternating Current = AC!   >Yeah but, it's a series motor so that means it can operate >on AC or DC..   The OP didn`t say anything about how the field is connected. It`s likely, but not necessarily a series motor.! So how do you know?   There are 3 types of brushed Motors with non permanent fields:   Nebenschluss Motor - shunt wound motor Reihenschluss Motor - series wound motor and combinations of them.   Mostly but not all are running with DC and low freq. AC (50/60Hz) Some need a special wound for running properly with AC.     Saludos (an alle Vernünftigen, Rest sh. sig) Wolfgang   -- Wolfgang Allinger, anerkannter Trollallergiker :) reply Adresse gesetzt! Ich diskutiere zukünftig weniger mit Idioten, denn sie ziehen mich auf ihr Niveau herunter und schlagen mich dort mit ihrer Erfahrung! :p (lt. alter usenet Weisheit) iPod, iPhone, iPad, iTunes, iRak, iDiot

"Arfa Daily" <arfa.daily@ntlworld.com>: Jun 22 01:45PM +0100 > on the commutator that was soldered to the individual rotor winding had > heated, melted the solder, and "threw" it out of the connection, leaving > that winding either open or intermittent at best. >   A friend from my youth was an auto-electrician, and apparently, back then, this was a common occurrence on starter motors and the like. The term that he used for the condition was "flung" as in 'it's got a "flung" armature'   I knew what that one meant, but the one that I never got in terms of where the phrase came from was "drop testing" which I believe referred to the resistance checking of the armature windings across opposite brass commutator segments, as described here by someone else.   Arfa

radiotek <radiotek.fcd880b@diybanter.com>: Jun 20 04:26AM +0200 I purchased a Sony TFM-3750W AM/FM transistor radio that has the FM antenna wire removed and need to know where it is connected on the circuit bord. Even a picture showing where the FM antenna wire is on the circuit board would be helpful.         -- radiotek

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