If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#42
|
|||
|
|||
David Maynard wrote:
Floyd L. Davidson wrote: David Maynard wrote: Speaking of 'unregulated' regulated wall worts isn't good english, logic, engineering, or anything else, except maybe humor. That was *your* term, silly as it is. It is an accurate 'silliness' of your contention that a regulated supply may have significant voltage rise with a lower load than it's 'rating' (your original, and correct, warning about unregulated supplies that you clung to when I brought up regulated wall worts). The term was yours, and it is silly (and all the other adjectives you used to describe it). Which is why *I* didn't use it. But the whole point to "regulation" is to prevent precisely what you argue can take place so it would have to be 'unregulated' for your caution to be true, which would make it an 'unregulated' regulated wall wort, silly as it is. If you think so, you'd better take a closer look at real life regulators! Sometimes the whole point of a "regulator" is ripple reduction at 60 Hz and it's harmonics. Sometimes the whole point of a "regulator" is to provide regulation within a very minimal range. And sometimes "regulation" means within 20%, sometimes 10% and sometimes 0.1%. I suppose I could go on with a longer list of ambiguities, but those are all well known and should be enough to demonstrate that your statement about "regulation" just doesn't have a lot of meaning. The point is that not all regulated power supplies maintain the same voltage with no load, and that some regulated power supplies do not regulate well except within a specified load range. Regardless, your original statement tried to generalize something specific that generally may not be true. I really have no idea why you decided to turn a simple matter of regulated wall worts into a mash of mumbo jumbo. Say someone I'm sorry you don't understand the technical aspects, but that does suggest you perhaps shouldn't try to post technical answers. wants to replace a dead 5V 2A SMP wall wort. What the hell do you suggest they get? A live "5V 2A SMP wall wort". Whatever, this conversation is finished. You can have the last words. Just do try for something a little better than unregulated regulated power, eh? -- Floyd L. Davidson http://web.newsguy.com/floyd_davidson Ukpeagvik (Barrow, Alaska) |
#43
|
|||
|
|||
Floyd L. Davidson wrote:
David Maynard wrote: Floyd L. Davidson wrote: David Maynard wrote: Speaking of 'unregulated' regulated wall worts isn't good english, logic, engineering, or anything else, except maybe humor. That was *your* term, silly as it is. It is an accurate 'silliness' of your contention that a regulated supply may have significant voltage rise with a lower load than it's 'rating' (your original, and correct, warning about unregulated supplies that you clung to when I brought up regulated wall worts). The term was yours, and it is silly (and all the other adjectives you used to describe it). Which is why *I* didn't use it. But the whole point to "regulation" is to prevent precisely what you argue can take place so it would have to be 'unregulated' for your caution to be true, which would make it an 'unregulated' regulated wall wort, silly as it is. If you think so, you'd better take a closer look at real life regulators! Sometimes the whole point of a "regulator" is ripple reduction at 60 Hz and it's harmonics. Sometimes the whole point of a "regulator" is to provide regulation within a very minimal range. And sometimes "regulation" means within 20%, sometimes 10% and sometimes 0.1%. Funny you mention "real life" and then wander off into a fantasy land of speculation. The fact of the "real life" matter is that none of your "sometimes" speculations apply to SMP wall worts. I suppose I could go on with a longer list of ambiguities, but those are all well known and should be enough to demonstrate that your statement about "regulation" just doesn't have a lot of meaning. The point is that not all regulated power supplies maintain the same voltage with no load, and that some regulated power supplies do not regulate well except within a specified load range. Regardless, your original statement tried to generalize something specific that generally may not be true. That is what I meant by your mash of mumbo jumbo. One can 'speculate' anything but the real world case is that a regulated wall wort will have none of the characteristics you ponder as 'possible'. I really have no idea why you decided to turn a simple matter of regulated wall worts into a mash of mumbo jumbo. Say someone I'm sorry you don't understand the technical aspects, but that does suggest you perhaps shouldn't try to post technical answers. Oh I understand them just fine and design them too. The difference is I don't try to obfuscate the practical matters with theoretical 'anything could be' speculations. wants to replace a dead 5V 2A SMP wall wort. What the hell do you suggest they get? A live "5V 2A SMP wall wort". Wouldn't you be terrified it could be one of those unsuitable 'possibilities' of inferior regulation you just ranted about? Whatever, this conversation is finished. You can have the last words. Just do try for something a little better than unregulated regulated power, eh? No need as it's appropriately silly as it stands. |
#44
|
|||
|
|||
On Wed, 08 Jun 2005 15:27:10 -0500, David Maynard
wrote: I don't feel like bringing the network down to put a meter to it but I'd bet the 5V 2.5A wall wort to my D-link 614+ is a switcher because I don't see any way a 12.5VA transformer could fit in the 1.75x2.25x1 inch case, plus there's no weight to it, and the model number, SMP-xxxxx, looks suspiciously like an engineer's "Switch Mode Power" supply acronym. I just happen to have a DLink DI-614+ here. DLink uses several sources of power supplies. This one is a: Fairway Electronics LTD Model: WN10A-050U Input: 100-240VAC 1.0A Max 50-60Hz Output: +5.0VDC 2.5A With such a wide input voltage range, it has to be a switcher. http://www.ncs-fairway.com/catalog/page10.pdf Note that the 5VDC output is regulated (to 5%). I dunno about the 70% efficiency. Seems a bit low. Interesting that the sticker says 2.5A while the data sheet says 2.0A output. Oh-oh. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831.336.2558 voice http://www.LearnByDestroying.com # # AE6KS |
#45
|
|||
|
|||
Jeff Liebermann wrote:
On Wed, 08 Jun 2005 15:27:10 -0500, David Maynard wrote: I don't feel like bringing the network down to put a meter to it but I'd bet the 5V 2.5A wall wort to my D-link 614+ is a switcher because I don't see any way a 12.5VA transformer could fit in the 1.75x2.25x1 inch case, plus there's no weight to it, and the model number, SMP-xxxxx, looks suspiciously like an engineer's "Switch Mode Power" supply acronym. I just happen to have a DLink DI-614+ here. DLink uses several sources of power supplies. This one is a: Fairway Electronics LTD Model: WN10A-050U Input: 100-240VAC 1.0A Max 50-60Hz Output: +5.0VDC 2.5A With such a wide input voltage range, it has to be a switcher. Thanks. Knew it had to be unless someone had invented featherweight iron http://www.ncs-fairway.com/catalog/page10.pdf Oh, I wish that was the one that came with mine. Mine has the plug on the end, which means it sticks almost 3 inches out the wall, if you plugged it into a wall outlet. Note that the 5VDC output is regulated (to 5%). That's the tolerance. They don't seem to mention load/line regulation %. I dunno about the 70% efficiency. Seems a bit low. Interesting that the sticker says 2.5A while the data sheet says 2.0A output. Oh-oh. Look at the second 5 volt job 5 lines down: 2.5A 12.5W |
#46
|
|||
|
|||
But wait! Couldn't the transformer be very light if it were ferrite and
worked at a much higher frequency than 60 Hz? Oh, never mind. Phil Weldon "David Maynard" wrote in message ... Jeff Liebermann wrote: On Wed, 08 Jun 2005 15:27:10 -0500, David Maynard wrote: I don't feel like bringing the network down to put a meter to it but I'd bet the 5V 2.5A wall wort to my D-link 614+ is a switcher because I don't see any way a 12.5VA transformer could fit in the 1.75x2.25x1 inch case, plus there's no weight to it, and the model number, SMP-xxxxx, looks suspiciously like an engineer's "Switch Mode Power" supply acronym. I just happen to have a DLink DI-614+ here. DLink uses several sources of power supplies. This one is a: Fairway Electronics LTD Model: WN10A-050U Input: 100-240VAC 1.0A Max 50-60Hz Output: +5.0VDC 2.5A With such a wide input voltage range, it has to be a switcher. Thanks. Knew it had to be unless someone had invented featherweight iron http://www.ncs-fairway.com/catalog/page10.pdf Oh, I wish that was the one that came with mine. Mine has the plug on the end, which means it sticks almost 3 inches out the wall, if you plugged it into a wall outlet. Note that the 5VDC output is regulated (to 5%). That's the tolerance. They don't seem to mention load/line regulation %. I dunno about the 70% efficiency. Seems a bit low. Interesting that the sticker says 2.5A while the data sheet says 2.0A output. Oh-oh. Look at the second 5 volt job 5 lines down: 2.5A 12.5W |
#47
|
|||
|
|||
On Fri, 10 Jun 2005 21:18:00 -0500, David Maynard
wrote: http://www.ncs-fairway.com/catalog/page10.pdf Oh, I wish that was the one that came with mine. Mine has the plug on the end, which means it sticks almost 3 inches out the wall, if you plugged it into a wall outlet. Most of mine are plugged into power strips where such a compact arrangement is benificial. However, there are ways to deal all manner of wall warts. http://802.11junk.com/jeffl/pics/dri...l-wart-01.html Interesting that the sticker says 2.5A while the data sheet says 2.0A output. Oh-oh. Look at the second 5 volt job 5 lines down: 2.5A 12.5W Oops. I didn't notice the "U" suffix. Thanks. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 AE6KS 831-336-2558 |
#48
|
|||
|
|||
Phil Weldon wrote:
But wait! Couldn't the transformer be very light if it were ferrite and worked at a much higher frequency than 60 Hz? Oh, never mind. Hehe. Sure. That's how a switcher does it. Phil Weldon "David Maynard" wrote in message ... Jeff Liebermann wrote: On Wed, 08 Jun 2005 15:27:10 -0500, David Maynard wrote: I don't feel like bringing the network down to put a meter to it but I'd bet the 5V 2.5A wall wort to my D-link 614+ is a switcher because I don't see any way a 12.5VA transformer could fit in the 1.75x2.25x1 inch case, plus there's no weight to it, and the model number, SMP-xxxxx, looks suspiciously like an engineer's "Switch Mode Power" supply acronym. I just happen to have a DLink DI-614+ here. DLink uses several sources of power supplies. This one is a: Fairway Electronics LTD Model: WN10A-050U Input: 100-240VAC 1.0A Max 50-60Hz Output: +5.0VDC 2.5A With such a wide input voltage range, it has to be a switcher. Thanks. Knew it had to be unless someone had invented featherweight iron http://www.ncs-fairway.com/catalog/page10.pdf Oh, I wish that was the one that came with mine. Mine has the plug on the end, which means it sticks almost 3 inches out the wall, if you plugged it into a wall outlet. Note that the 5VDC output is regulated (to 5%). That's the tolerance. They don't seem to mention load/line regulation %. I dunno about the 70% efficiency. Seems a bit low. Interesting that the sticker says 2.5A while the data sheet says 2.0A output. Oh-oh. Look at the second 5 volt job 5 lines down: 2.5A 12.5W |
#49
|
|||
|
|||
Jeff Liebermann wrote:
On Fri, 10 Jun 2005 21:18:00 -0500, David Maynard wrote: http://www.ncs-fairway.com/catalog/page10.pdf Oh, I wish that was the one that came with mine. Mine has the plug on the end, which means it sticks almost 3 inches out the wall, if you plugged it into a wall outlet. Most of mine are plugged into power strips where such a compact arrangement is benificial. However, there are ways to deal all manner of wall warts. http://802.11junk.com/jeffl/pics/dri...l-wart-01.html LOL. Now HOW did you get a picture of my power strip? Interesting that the sticker says 2.5A while the data sheet says 2.0A output. Oh-oh. Look at the second 5 volt job 5 lines down: 2.5A 12.5W Oops. I didn't notice the "U" suffix. Thanks. |
#50
|
|||
|
|||
On Fri, 10 Jun 2005 23:57:58 -0700, in alt.internet.wireless , Jeff
Liebermann wrote: Most of mine are plugged into power strips where such a compact arrangement is benificial. However, there are ways to deal all manner of wall warts. http://802.11junk.com/jeffl/pics/dri...l-wart-01.html do you not find that the adaptors in the middle get kinda hot? I can practically cook toast on the power strip under my desk at work. -- Mark McIntyre CLC FAQ http://www.eskimo.com/~scs/C-faq/top.html CLC readme: http://www.ungerhu.com/jxh/clc.welcome.txt ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Dell SmartStep 200N NOTEBOOK - When I plug the AC Adapter into the notebook, the screen fades to dark. | The Truth | Dell Computers | 2 | November 20th 04 04:12 PM |
2 questions: Difference between 65w and 90w AC adapter and 2nd battery | Martin Barron | Dell Computers | 1 | April 27th 04 10:27 PM |
Arena 8600 on an Ultra320 adapter | Olaf Pors | Storage & Hardrives | 0 | February 24th 04 01:50 AM |
Wireless USB adapter help | unwired | General Hardware | 1 | January 29th 04 09:15 AM |
ATI AIW Radeon Owners Using the HDTV Adapter - Experiences???? | J.Clarke | Ati Videocards | 1 | December 21st 03 07:06 PM |