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#11
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service by Sony... Read on...
William:
Go back to using 6 cells and then obtain and implement a LM7812, 12v regulator. More than 12 volts can go into the regulator but, only 12 volts will come out of the 3 pin active device. Other chips to use; National Semiconductor LM25xx family - http://www.national.com/parametric/0,1850,1758,00.html Full schematic of a 12v, low voltage, regulated power supply: http://www.drbob.net/project/powersu...d/default.html Voltage regulation concept: http://www.allaboutcircuits.com/vol_6/chpt_5/7.html Dave "William Graham" wrote in message news%mCc.94061$eu.6020@attbi_s02... | | "David H. Lipman" wrote in message | ... | I almost *always* Top Post and will continue to do so ! | | If they state it -- there has to be a reason. Please provide it. | | Dave | | Any batteries will work in a camera as long as they do not exceed the | voltage specs for the camera as put out by the manufacturer. If they are too | low in voltage the camera won't work, but it won't harm the camera, since | any battery you use will begin to put out a too small voltage when near the | end of its useful life. I use a home-made lead acid battery pack on my Nikon | F5. It only uses 5 cells, since 6 cells will charge up to 14.5 volts, and I | was afraid that this might over voltage the camera circuits. Fortunately, I | was able to find individual cells that only charge to about 2.1 volts each, | and build a 5 cell pack that only charges to about 10.5 volts, which is well | within the manufacturers 12 volt specs. I have to wear this pack on my | waist, and connect it to my camera with a two conductor cord, but it will | provide the camera with plenty of power for a long time, since it holds | about 3500 ampere-hours. I use it for a back-up if the eight 1.55 volt | lithium's die when I am on a location somewhere out in the sticks. | | |
#12
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service by Sony... Read on...
"David H. Lipman" wrote in message ... William: Go back to using 6 cells and then obtain and implement a LM7812, 12v regulator. More than 12 volts can go into the regulator but, only 12 volts will come out of the 3 pin active device. Other chips to use; National Semiconductor LM25xx family - http://www.national.com/parametric/0,1850,1758,00.html Full schematic of a 12v, low voltage, regulated power supply: http://www.drbob.net/project/powersu...d/default.html Voltage regulation concept: http://www.allaboutcircuits.com/vol_6/chpt_5/7.html Dave Thanks, Dave. - I may just try building one of these. I am using gell-cell 2 volt cells that I found on line pretty cheap, but I would prefer a regular 12 volt gell cell because they are very common, and I can plug them into my car cigarette lighter socket and recharge them while I am driving around. I have to charge my home-made pack with a 6 volt wall wart supply that really puts out 10.65 volts under no load. This works, but it takes several days to recharge the 10.5 volt pack back up if it is nearly discharged.....12 volt gell-cells are really neat for this application because they come in all sizes. The ones used for bicycle lights are a nice size...... |
#13
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service bySony... Read on...
Dave wrote:
On Wed, 23 Jun 2004 09:54:54 -0400, Alan Browne somehow managed to impart: David H. Lipman wrote: Don't top post Good points. I found the same lack of quality support with Sony Vaio laptops. Therefore I won't buy Sony. As for using Lithium AA's in the camera. There is absolutely NO reason why you should not be able to use them. Electrically they are the same as any other AA batteries, they just last longer. I buy mine from Sears at ~$10.00 for 4 x AA batteries (better price than Radio Shack). When the camera manufacturer puts in a warning: "AA Lithium batteries cannot be used" it is there for a good reason. Yes, but what? No idea. Unfortunately they don't explain why. The body 123 batteries I use are lithium, but the vertical grip instructions say "thou shalt not" without explanation as to why. A possibility is that the instructions were generated at about the time lithiums came on the market, perhaps with some characteristic that the engineers at Minolta were wary of, hence the warning ... but no "why". Possibly it can be used with lithiums without trouble at all... -- --e-meil: there's no such thing as a FreeLunch.-- |
#14
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service by Sony... Read on...
"Alan Browne" wrote in message news Dave wrote: On Wed, 23 Jun 2004 09:54:54 -0400, Alan Browne somehow managed to impart: David H. Lipman wrote: Don't top post Good points. I found the same lack of quality support with Sony Vaio laptops. Therefore I won't buy Sony. As for using Lithium AA's in the camera. There is absolutely NO reason why you should not be able to use them. Electrically they are the same as any other AA batteries, they just last longer. I buy mine from Sears at ~$10.00 for 4 x AA batteries (better price than Radio Shack). When the camera manufacturer puts in a warning: "AA Lithium batteries cannot be used" it is there for a good reason. Yes, but what? No idea. Unfortunately they don't explain why. The body 123 batteries I use are lithium, but the vertical grip instructions say "thou shalt not" without explanation as to why. A possibility is that the instructions were generated at about the time lithiums came on the market, perhaps with some characteristic that the engineers at Minolta were wary of, hence the warning ... but no "why". Possibly it can be used with lithiums without trouble at all... -- --e-meil: there's no such thing as a FreeLunch.-- I know every time I've used a set of my Lithiums to power up a flashlight, the bulb doesn't last very long (e.g. minutes at most). Therefore I'd be cautious of using them in anything that says not to. |
#15
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service bySony... Read on...
pjp wrote:
No idea. Unfortunately they don't explain why. The body 123 batteries I use are lithium, but the vertical grip instructions say "thou shalt not" without explanation as to why. A possibility is that the instructions were generated at about the time lithiums came on the market, perhaps with some characteristic that the engineers at Minolta were wary of, hence the warning ... but no "why". Possibly it can be used with lithiums without trouble at all... -- --e-meil: there's no such thing as a FreeLunch.-- I know every time I've used a set of my Lithiums to power up a flashlight, the bulb doesn't last very long (e.g. minutes at most). Therefore I'd be cautious of using them in anything that says not to. Really? Wow. Any web references you can point me to? I'm not about to 'test' the batteries in the grip (US$200 or so) in any case. Cheers, Alan -- --e-meil: there's no such thing as a FreeLunch.-- |
#16
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service by Sony... Read on...
Energizer silver/blue lithium batteries are designed for digital cameras
specifically. I don't think they intended to use them in flashlights. "pjp" wrote in message ... "Alan Browne" wrote in message news Dave wrote: On Wed, 23 Jun 2004 09:54:54 -0400, Alan Browne somehow managed to impart: David H. Lipman wrote: Don't top post Good points. I found the same lack of quality support with Sony Vaio laptops. Therefore I won't buy Sony. As for using Lithium AA's in the camera. There is absolutely NO reason why you should not be able to use them. Electrically they are the same as any other AA batteries, they just last longer. I buy mine from Sears at ~$10.00 for 4 x AA batteries (better price than Radio Shack). When the camera manufacturer puts in a warning: "AA Lithium batteries cannot be used" it is there for a good reason. Yes, but what? No idea. Unfortunately they don't explain why. The body 123 batteries I use are lithium, but the vertical grip instructions say "thou shalt not" without explanation as to why. A possibility is that the instructions were generated at about the time lithiums came on the market, perhaps with some characteristic that the engineers at Minolta were wary of, hence the warning ... but no "why". Possibly it can be used with lithiums without trouble at all... -- --e-meil: there's no such thing as a FreeLunch.-- I know every time I've used a set of my Lithiums to power up a flashlight, the bulb doesn't last very long (e.g. minutes at most). Therefore I'd be cautious of using them in anything that says not to. |
#17
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service by Sony... Read on...
Alkaline batteries voltage drop as a function. Therefore the filament receives a lower
voltage as a function of time and burns less hot as a function of time. Lithium batteries provide a constant voltage as a function of time until its life has been spent then its voltage drops off rapidly to zero. Therefore the filament receives a constant voltage as a function of time and burns hot consistently over the life span of the battery thus reducing the life span of the bulb. Cameras, CD players, DVD players or other electronic devices are active devices as opposed to bulbs which are passive device which are electrical not electronic devices. Therefore the two, cameras and flashlights, can NOT be compared equally. Dave "unavailable" wrote in message link.net... | Energizer silver/blue lithium batteries are designed for digital cameras | specifically. I don't think they intended to use them in flashlights. | | "pjp" wrote in message | ... | | "Alan Browne" wrote in message | news | Dave wrote: | On Wed, 23 Jun 2004 09:54:54 -0400, Alan Browne | somehow managed to impart: | | | David H. Lipman wrote: | | Don't top post | | | Good points. I found the same lack of quality support with Sony Vaio | laptops. Therefore I | won't buy Sony. | | As for using Lithium AA's in the camera. There is absolutely NO | reason | why you should not | be able to use them. Electrically they are the same as any other AA | batteries, they just | last longer. I buy mine from Sears at ~$10.00 for 4 x AA batteries | (better price than Radio | Shack). | | When the camera manufacturer puts in a warning: | "AA Lithium batteries cannot be used" it is there for a good reason. | | | Yes, but what? | | No idea. Unfortunately they don't explain why. The body 123 | batteries I use are lithium, but the vertical grip instructions | say "thou shalt not" without explanation as to why. A | possibility is that the instructions were generated at about the | time lithiums came on the market, perhaps with some | characteristic that the engineers at Minolta were wary of, hence | the warning ... but no "why". Possibly it can be used with | lithiums without trouble at all... | | | -- | --e-meil: there's no such thing as a FreeLunch.-- | | | I know every time I've used a set of my Lithiums to power up a flashlight, | the bulb doesn't last very long (e.g. minutes at most). Therefore I'd be | cautious of using them in anything that says not to. | | | | |
#18
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service by Sony... Read on...
Oooops...
I meant to state... "Alkaline batteries voltage drop as a function of time." Dave "David H. Lipman" wrote in message ... | Alkaline batteries voltage drop as a function. Therefore the filament receives a lower | voltage as a function of time and burns less hot as a function of time. | | Lithium batteries provide a constant voltage as a function of time until its life has been | spent then its voltage drops off rapidly to zero. Therefore the filament receives a | constant voltage as a function of time and burns hot consistently over the life span of the | battery thus reducing the life span of the bulb. | | Cameras, CD players, DVD players or other electronic devices are active devices as opposed | to bulbs which are passive device which are electrical not electronic devices. Therefore | the two, cameras and flashlights, can NOT be compared equally. | | Dave |
#19
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service by Sony... Read on...
"pjp" wrote in message ... I know every time I've used a set of my Lithiums to power up a flashlight, the bulb doesn't last very long (e.g. minutes at most). Therefore I'd be cautious of using them in anything that says not to. If the voltage is correct for the bulb, the battery type can't hurt it. I suggest you look up Ohm's law, and take a few minutes to learn some basic electrical theory.....Believe me, it should only take an hour or less, and the information will be invaluable to you, regardless of what you choose for your profession....... |
#20
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Sony Cybershot DSC-W1... Bad Camera...Bad Customer Service bySony... Read on...
William Graham wrote:
"pjp" wrote in message ... I know every time I've used a set of my Lithiums to power up a flashlight, the bulb doesn't last very long (e.g. minutes at most). Therefore I'd be cautious of using them in anything that says not to. If the voltage is correct for the bulb, the battery type can't hurt it. I suggest you look up Ohm's law, and take a few minutes to learn some basic electrical theory.....Believe me, it should only take an hour or less, and the information will be invaluable to you, regardless of what you choose for your profession....... WRONG! Lithium batteries are capable of delivering very high currents. If a flashlight is designed for carbon/zinc or alkaline batteries, the designers are probably counting on the internal resistance of the batteries to limit the current through the bulb. Lithiums could easily burn out the bulb. But, it's your flashlight, try it out. Then tell us how it affects bulb life. |
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