On Sun, 07 Oct 2012 10:42:06 -0600, ���hw��f <snuhwolf@netscape.net> wrote:>John Fields wrote: >> On Sat, 06 Oct 2012 18:36:06 -0600, ���hw��f <snuhwolf@netscape.net> >> wrote: >> >>> John Fields wrote: >>>> On Sat, 06 Oct 2012 13:29:23 -0600, ���hw��f <snuhwolf@netscape.net> >>>> wrote: >>>> >>>>> Phil Hobbs wrote: >>>>>> On 10/06/2012 12:51 PM, ���hw��f wrote: >>>>>>> Phil Hobbs wrote: >>>>>>>> [......] >>>>>>>> >>>>>>>> Stew Leonard's Espresso Roast, roasted fresh daily in sunny Yonkers. >>>>>>>> Best beans I've ever come across, and worth the trip. Always a crowd >>>>>>>> pleaser. >>>>>>>> >>>>>>>> Cheers >>>>>>>> >>>>>>>> Phil Hobbs >>>>>>>> >>>>>>> Sorry to hijack this thread but I have an actual electronics repair >>>>>>> question: how do I go about getting my old AIWA CX-NA10 stereo system to >>>>>>> read CD's again? Is the lazer bad? It detects the cd and spins up but >>>>>>> wont play it. >>>>>>> >>>>>>> >>>>>>> >>>>>> You're no fun anymore. >>>>>> >>>>>> Cheers >>>>>> >>>>>> Phil Hobbs >>>>>> >>>>> Uh huh. I fixed it somewhat by fiddling with the screw behind the back >>>>> cover. G00gle told me how. You lot are obviously quite useless. >>>>> >>>>> <nods> >>>> --- >>>> Hardly surprising, since your query would have more appropriately been >>>> directed to sci.electronics.repair. >>>> >>>> >>> Gee, good thing this thread was never x-posted there, huh? >>> >>> <aside> >>> >>> Are all the regs of s.e.b this fucking retarded? >> >> --- >> Since you chose to use 'this' instead of 'that', you've demonstrated >> that you _are_ grammatically challenged, but not yet knowing the exact >> level of your retardation, it's impossible to answer your question. >> >> http://www.englisch-hilfen.de/en/grammar/this_that.htm >> >Yeah, we're not doing a thing.--- Well, you're making mistakes and I'm correcting them, so we're both "doing a thing" and, errorwise, so far you're batting 1000. --->You can find somebody else's leg to hump.--- You need to study up on anatomy. -- JF
Using mobile phone as an internet radio
Started by ●October 2, 2012
Reply by ●October 7, 20122012-10-07
Reply by ●October 8, 20122012-10-08
On 6 Oct 2012 23:31:51 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:>yeah, it would be a good project for the mythbusters, I'd love to see >a slow motion film of an incandescent lamp failing at turn-on. >but could they affor do dedicate their fast camera for long enough.Due to the apparently lack of data and my curiosity, I was thinking of throwing together a crude experiment. Two lamp bases, two 40 watt clear envelope incandescent lamps, two SSS (solid state switches), and some kind of pulse generator. 30 seconds on should be enough to get the filament hot enough for sublimation. 30 seconds off should be enough for it to cool down for a cold start (I need to check this with an IR thermometer). However, I have no intention of running this test for 1000+ hours. Instead, an accelerated life test can be done with higher than normal voltages. <http://www.welchallyn.com/documents/Lighting/OEM_Halogen_Lighting/MC3544HPX_Catalog_2_11_09.pdf> For halogen bulbs, they use: Life = (Vdesign / Vapplied)^12.0 * Life at design voltage For a 1000 hr lamp running at 120% of the rated voltage, the life might be: life = (1/1.2)^12 * 1000 = 112 hrs which is more reasonable for my tinkering and for Mythbusters. With power cycling, the life will be even less. I should have a Variac somewhere in my junk pile. -- 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
Reply by ●October 8, 20122012-10-08
On Oct 8, 12:00=A0am, Jeff Liebermann <je...@cruzio.com> wrote:> On 6 Oct 2012 23:31:51 GMT, Jasen Betts <ja...@xnet.co.nz> wrote: > > >yeah, it would be a good project for the mythbusters, I'd love to see > >a slow motion film of an incandescent lamp failing at turn-on. > >but could they affor do dedicate their fast camera for long enough. > > Due to the apparently lack of data and my curiosity, I was thinking of > throwing together a crude experiment. =A0Two lamp bases, two 40 watt > clear envelope incandescent lamps, two SSS (solid state switches), and > some kind of pulse generator. =A030 seconds on should be enough to get > the filament hot enough for sublimation. =A030 seconds off should be > enough for it to cool down for a cold start (I need to check this with > an IR thermometer). > > However, I have no intention of running this test for 1000+ hours. > Instead, an accelerated life test can be done with higher than normal > voltages. > <http://www.welchallyn.com/documents/Lighting/OEM_Halogen_Lighting/MC3...= > > For halogen bulbs, they use: > =A0 Life =3D (Vdesign / Vapplied)^12.0 * Life at design voltage > For a 1000 hr lamp running at 120% of the rated voltage, the life > might be: > =A0 life =3D (1/1.2)^12 * 1000 =3D 112 hrs > which is more reasonable for my tinkering and for Mythbusters. =A0With > power cycling, the life will be even less. =A0I should have a Variac > somewhere in my junk pile. > > -- > Jeff Liebermann =A0 =A0 je...@cruzio.com > 150 Felker St #D =A0 =A0http://www.LearnByDestroying.com > Santa Cruz CA 95060http://802.11junk.com > Skype: JeffLiebermann =A0 =A0 AE6KS =A0 =A0831-336-2558Hi SEB. Well I sent an email to Don klipstein on this topic. And have permission to copy his reply. <from Don K. below> My apologies - I have been off Usenet for a little over a year.> Hi Don, I was wondering (out loud) if you still lurk on the > sci.electronics.basic usernet forum? > (So I figured I'd just drop you an email.) > > We have a question about the aging of incandescent bulbs from being > turned on and off. You seem like quite a lamp expert and I was > wondering if you've ever come across any real data on the subject.As for real data on effect of switching causing wear on incandescents: I know some data. 1: It is true that incandescents often failon cold starts. However, I know a mechanism where an aging incandescent becomes unable to survive a cold start a little before it becomes unable to survive continuous operation. I explain this in: http://donklipstein.com/bulb1.html#how And: http://donklipstein.com/bulb1.html#wbt 2: In incandescent traffic signals, the bulbs for yellow last longer than for red and green. So even after being switched on and off about a million times, on-time is still a significant factor in life expectancy. However, traffic signal bulbs have a more vibration-resistant filament than standard incandescents. 3: Flashing and chasing marquee lights used to be incandescent until cold cathode CFLs became economically available. Cold cathode CFLs are special CFLs that are dimmable and blinkable, and flashing them does not detract from their life. However, their efficiency is less than that of hot cathode CFLs. Some marquees still use incandescents. 4: I did an experiment to check for voltage drop in one of those now-hard-to-get thermistor-type life-extending "buttons" to attach to the tip of the base of an incandescent. The device claimed to double the life of the bulb. I found enough voltage drop to account for 50-60% life extension. Light output was reduced 13%, and power consumption of the combo of the bulb and the thermistor was only 2.05% less than that of a bulb connected directly to the line. 5: In my experience, incandescent holiday lights that blink last longer than those that don't. However, most of my experience is with low voltage bulbs whose short filaments are probably sturdier. 6: Some incandescents make an audible "ping" when switched on. However, deflection of the filament does not necessarily strain the filament past its "endurance limit" - the threshold of causing metal fatigue. 7: Some railroad crossing signals have a set-up where bulbs have a resistor added in series with them for the first half second or so that they are on. However, this may be done because of how serious the problem is widely said to be, and how serious it actually is appears to me to be much less. 8: One of my friends had a bathroom fixture with a high wattage bulb that was constantly run dimmed by a dimmer. He experienced little gain in life extension. Since his bulbs significantly audibly buzzed, I suspect his filaments resonated at the power line frequency or one of the power line frequency's lower harmonics. 9: My mother had some incandescent nightlights that had diodes in them to significantly dim the bulbs - which should have made the bulbs last for decades. However, they did not. One thing I noticed: These 4-watt bulbs had extremely thin filaments, and with a diode and therefore being off half the time 60 times a second, their temperature varied greatly up and down 60 times a second. I could see that from rolling my eyes up-and-down while looking at them. Maybe the filaments at times resonated at the power line frequency or a lower harmonic thereof. That could easily produce sound too weak to hear from more than a couple inches away, because such low wattage 120V incandescents have a vacuum rather than a gas fill. Or, maybe those bulbs do not do well with DC due to high voltage, vacuum, and the ends of the filament being close to each other. Please see: http://donklipstein.com/bulb1.html#dc =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Overall, I am seeing generally that cold starts are not nearly as bad as many say they are, but in a few bulbs they can be. The data appears to me to be majority in favor of "little to generally no problem from cold starts", but it is incomplete. I would also suggest reading: http://donklipstein.com/ltrouble.html#i =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Hope this helps! - Don Klipstein (don@donklipstein.com)
Reply by ●October 8, 20122012-10-08
John Fields wrote:> On Sun, 07 Oct 2012 10:42:06 -0600, ���hw��f <snuhwolf@netscape.net> > wrote: > >> John Fields wrote: >>> On Sat, 06 Oct 2012 18:36:06 -0600, ���hw��f <snuhwolf@netscape.net> >>> wrote: >>> >>>> John Fields wrote: >>>>> On Sat, 06 Oct 2012 13:29:23 -0600, ���hw��f <snuhwolf@netscape.net> >>>>> wrote: >>>>> >>>>>> Phil Hobbs wrote: >>>>>>> On 10/06/2012 12:51 PM, ���hw��f wrote: >>>>>>>> Phil Hobbs wrote: >>>>>>>>> [......] >>>>>>>>> >>>>>>>>> Stew Leonard's Espresso Roast, roasted fresh daily in sunny Yonkers. >>>>>>>>> Best beans I've ever come across, and worth the trip. Always a crowd >>>>>>>>> pleaser. >>>>>>>>> >>>>>>>>> Cheers >>>>>>>>> >>>>>>>>> Phil Hobbs >>>>>>>>> >>>>>>>> Sorry to hijack this thread but I have an actual electronics repair >>>>>>>> question: how do I go about getting my old AIWA CX-NA10 stereo system to >>>>>>>> read CD's again? Is the lazer bad? It detects the cd and spins up but >>>>>>>> wont play it. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> You're no fun anymore. >>>>>>> >>>>>>> Cheers >>>>>>> >>>>>>> Phil Hobbs >>>>>>> >>>>>> Uh huh. I fixed it somewhat by fiddling with the screw behind the back >>>>>> cover. G00gle told me how. You lot are obviously quite useless. >>>>>> >>>>>> <nods> >>>>> --- >>>>> Hardly surprising, since your query would have more appropriately been >>>>> directed to sci.electronics.repair. >>>>> >>>>> >>>> Gee, good thing this thread was never x-posted there, huh? >>>> >>>> <aside> >>>> >>>> Are all the regs of s.e.b this fucking retarded? >>> --- >>> Since you chose to use 'this' instead of 'that', you've demonstrated >>> that you _are_ grammatically challenged, but not yet knowing the exact >>> level of your retardation, it's impossible to answer your question. >>> >>> http://www.englisch-hilfen.de/en/grammar/this_that.htm >>> >> Yeah, we're not doing a thing. > > --- > Well, you're making mistakes and I'm correcting them, so we're both > "doing a thing" and, errorwise, so far you're batting 1000. > --- > >> You can find somebody else's leg to hump. > > --- > You need to study up on anatomy. >Sod off, aNaL cAkEs. :) -- http://howlingforjustice.wordpress.com www.snuhwolf.9f.com|www.savewolves.org _____ ____ ____ __ /\_/\ __ _ ______ _____ / __/ |/ / / / / // // . . \\ \ |\ | / __ \ \ \ __\ _\ \/ / /_/ / _ / \ / \ \| \| \ \_\ \ \__\ _\ /___/_/|_/\____/_//_/ \_@_/ \__|\__|\____/\____\_\
Reply by ●October 8, 20122012-10-08
On Mon, 08 Oct 2012 10:55:17 -0600, ���hw��f <snuhwolf@netscape.net> wrote:>John Fields wrote: >> On Sun, 07 Oct 2012 10:42:06 -0600, ���hw��f <snuhwolf@netscape.net> >> wrote: >> >>> John Fields wrote: >>>> On Sat, 06 Oct 2012 18:36:06 -0600, ���hw��f <snuhwolf@netscape.net> >>>> wrote: >>>> >>>>> John Fields wrote: >>>>>> On Sat, 06 Oct 2012 13:29:23 -0600, ���hw��f <snuhwolf@netscape.net> >>>>>> wrote: >>>>>> >>>>>>> Phil Hobbs wrote: >>>>>>>> On 10/06/2012 12:51 PM, ���hw��f wrote: >>>>>>>>> Phil Hobbs wrote: >>>>>>>>>> [......] >>>>>>>>>> >>>>>>>>>> Stew Leonard's Espresso Roast, roasted fresh daily in sunny Yonkers. >>>>>>>>>> Best beans I've ever come across, and worth the trip. Always a crowd >>>>>>>>>> pleaser. >>>>>>>>>> >>>>>>>>>> Cheers >>>>>>>>>> >>>>>>>>>> Phil Hobbs >>>>>>>>>> >>>>>>>>> Sorry to hijack this thread but I have an actual electronics repair >>>>>>>>> question: how do I go about getting my old AIWA CX-NA10 stereo system to >>>>>>>>> read CD's again? Is the lazer bad? It detects the cd and spins up but >>>>>>>>> wont play it. >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> You're no fun anymore. >>>>>>>> >>>>>>>> Cheers >>>>>>>> >>>>>>>> Phil Hobbs >>>>>>>> >>>>>>> Uh huh. I fixed it somewhat by fiddling with the screw behind the back >>>>>>> cover. G00gle told me how. You lot are obviously quite useless. >>>>>>> >>>>>>> <nods> >>>>>> --- >>>>>> Hardly surprising, since your query would have more appropriately been >>>>>> directed to sci.electronics.repair. >>>>>> >>>>>> >>>>> Gee, good thing this thread was never x-posted there, huh? >>>>> >>>>> <aside> >>>>> >>>>> Are all the regs of s.e.b this fucking retarded? >>>> --- >>>> Since you chose to use 'this' instead of 'that', you've demonstrated >>>> that you _are_ grammatically challenged, but not yet knowing the exact >>>> level of your retardation, it's impossible to answer your question. >>>> >>>> http://www.englisch-hilfen.de/en/grammar/this_that.htm >>>> >>> Yeah, we're not doing a thing. >> >> --- >> Well, you're making mistakes and I'm correcting them, so we're both >> "doing a thing" and, errorwise, so far you're batting 1000. >> --- >> >>> You can find somebody else's leg to hump. >> >> --- >> You need to study up on anatomy. >> >Sod off, aNaL cAkEs.--- So, not being at all clever, you missed the hint? -- JF
Reply by ●October 9, 20122012-10-09
On Sat, 06 Oct 2012 10:51:47 -0600, ���hw��f <snuhwolf@netscape.net> wrote:>Phil Hobbs wrote: >> [......] >> >> Stew Leonard's Espresso Roast, roasted fresh daily in sunny Yonkers. >> Best beans I've ever come across, and worth the trip. Always a crowd >> pleaser. >> >> Cheers >> >> Phil Hobbs >> >Sorry to hijack this thread but I have an actual electronics repair >question: how do I go about getting my old AIWA CX-NA10 stereo system to >read CD's again? Is the lazer bad? It detects the cd and spins up but >wont play it.Have you taken it apart yet? Try cleaning the lens. In a dirty, smoky or wet environment the lenses can become coated with stuff.
Reply by ●October 10, 20122012-10-10
default wrote:> On Sat, 06 Oct 2012 10:51:47 -0600, ���hw��f <snuhwolf@netscape.net> > wrote: > >> Phil Hobbs wrote: >>> [......] >>> >>> Stew Leonard's Espresso Roast, roasted fresh daily in sunny Yonkers. >>> Best beans I've ever come across, and worth the trip. Always a crowd >>> pleaser. >>> >>> Cheers >>> >>> Phil Hobbs >>> >> Sorry to hijack this thread but I have an actual electronics repair >> question: how do I go about getting my old AIWA CX-NA10 stereo system to >> read CD's again? Is the lazer bad? It detects the cd and spins up but >> wont play it. > > Have you taken it apart yet? Try cleaning the lens. In a dirty, > smoky or wet environment the lenses can become coated with stuff. > >I had it "working" a little after all that and an adjustment to the potentiometer on the back of the lazer as instructed. However it would only read one specific CD and scratched some CD's when it went thru its ejection cycle (disks would not spin down before ejection!) so I removed the tray and wont use it anymore. Further research indicated AIWA was part of a class action lawsuit in the 90's due to their CD players being crap. They're out of business now anyway. Good riddance. -- http://howlingforjustice.wordpress.com www.snuhwolf.9f.com|www.savewolves.org _____ ____ ____ __ /\_/\ __ _ ______ _____ / __/ |/ / / / / // // . . \\ \ |\ | / __ \ \ \ __\ _\ \/ / /_/ / _ / \ / \ \| \| \ \_\ \ \__\ _\ /___/_/|_/\____/_//_/ \_@_/ \__|\__|\____/\____\_\
Reply by ●October 11, 20122012-10-11
On Mon, 8 Oct 2012 06:27:05 -0700 (PDT), George Herold <gherold@teachspin.com> wrote:>Hi SEB. Well I sent an email to Don klipstein on this topic. And >have permission to copy his reply. ><from Don K. below>>2: In incandescent traffic signals, the bulbs for yellow last >longer than for red and green. So even after being switched on >and off about a million times, on-time is still a significant >factor in life expectancy.That means for my proposed test comparing a 50% duty cycle flashing light bulb, with one that is on continuously, the continuous light bulb will burn out first. That's the opposite of what I saw with the theater marquee bulbs. Now, I'm really tempted to run the experiment. -- 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
Reply by ●October 11, 20122012-10-11
Jeff Liebermann wrote:> > On Mon, 8 Oct 2012 06:27:05 -0700 (PDT), George Herold > <gherold@teachspin.com> wrote: > > >Hi SEB. Well I sent an email to Don klipstein on this topic. And > >have permission to copy his reply. > ><from Don K. below> > > >2: In incandescent traffic signals, the bulbs for yellow last > >longer than for red and green. So even after being switched on > >and off about a million times, on-time is still a significant > >factor in life expectancy. > > That means for my proposed test comparing a 50% duty cycle flashing > light bulb, with one that is on continuously, the continuous light > bulb will burn out first. That's the opposite of what I saw with the > theater marquee bulbs. Now, I'm really tempted to run the experiment.Was there any vibration in that theater marquee?
Reply by ●October 11, 20122012-10-11
"���hw��f" <snuhwolf@netscape.net> wrote in message news:k548cn$d53$1@dont-email.me...> default wrote: >> On Sat, 06 Oct 2012 10:51:47 -0600, ���hw��f <snuhwolf@netscape.net> >> wrote: >> >>> Phil Hobbs wrote: >>>> [......] >>>> >>>> Stew Leonard's Espresso Roast, roasted fresh daily in sunny Yonkers. >>>> Best beans I've ever come across, and worth the trip. Always a crowd >>>> pleaser. >>>> >>>> Cheers >>>> >>>> Phil Hobbs >>>> >>> Sorry to hijack this thread but I have an actual electronics repair >>> question: how do I go about getting my old AIWA CX-NA10 stereo system to >>> read CD's again? Is the lazer bad? It detects the cd and spins up but >>> wont play it. >> >> Have you taken it apart yet? Try cleaning the lens. In a dirty, >> smoky or wet environment the lenses can become coated with stuff. >> >> > I had it "working" a little after all that and an adjustment to the > potentiometer on the back of the lazer as instructed. However it would > only read one specific CD and scratched some CD's when it went thru its > ejection cycle (disks would not spin down before ejection!) so I removed > the tray and wont use it anymore. Further research indicated AIWA was part > of a class action lawsuit in the 90's due to their CD players being crap. > They're out of business now anyway. Good riddance. > > -- > http://howlingforjustice.wordpress.com > www.snuhwolf.9f.com|www.savewolves.org > _____ ____ ____ __ /\_/\ __ _ ______ _____ > / __/ |/ / / / / // // . . \\ \ |\ | / __ \ \ \ __\ > _\ \/ / /_/ / _ / \ / \ \| \| \ \_\ \ \__\ _\ > /___/_/|_/\____/_//_/ \_@_/ \__|\__|\____/\____\_\Aiwa is still around as I understand it. They're owned by Sony. The biggest problem with their 3-cd models was that so much dust would get into the lasers that even cleaning eventually would not be enough and the laser would need to be replaced. By the way, the lasers were made by Sony, the same pickups used by many manufacturers at the time. Worked on many of them, the customers were mostly satisfied. Later models had sliding covers that covered up the laser lens when not playing. This helped but of course was not a perfect solution. Mark Z.
