kony <spam@spam.com> wrote
> Rod Speed <rod.speed.aaa@gmail.com> wrote
>> kony <spam@spam.com> wrote
>>> Rod Speed <rod.speed.aaa@gmail.com> wrote
>>>> kony <spam@spam.com> wrote
>>>>> Rod Speed <rod.speed.aaa@gmail.com> wrote
>>>>>> kony <spam@spam.com> wrote
>>>>>>> Rod Speed <rod.speed.aaa@gmail.com> wrote
>>>>>>>> kony <spam@spam.com> wrote
>>>>>>>>> Rod Speed <rod.speed.aaa@gmail.com> wrote
>>>>>>>>>> kony <spam@spam.com> wrote
>>>>>>>>>>> Rod Speed <rod.speed.aaa@gmail.com> wrote
>>>>>>>>>>>> Noozer <dont.spam@me.here> wrote

>>>>>>>>>>>>> If I have an external phone modem that uses a 1amp 9vDC tranformer,

>>>>>>>>>>>> That would be unusual.

>>>>>>>>>>> True, but if it is really 9VDC, next is to determine how much current it
>>>>>>>>>>> uses (if there's a multimeter handy) or the more conservative (higher)
>>>>>>>>>>> equipment current rating, or the overly conservative and probably less
>>>>>>>>>>> useful original PSU (wall wart?) current rating.

>>>>>>>>>>> I seriously doubt it comes remotely close to 1A,

>>>>>>>>>> Plenty of mine are of that order.

>>>>>>>>> The wart might be, but I doubt the modem itself is.

>>>>>>>> Plenty were, most obviously those that came in an
>>>>>>>> extruded aluminum sleeve and got quite hot anyway.

>>>>>>> Quite hot and overheated are not the same thing.

>>>>>> Never ever said it was. It is a reasonable indication that
>>>>>> it might well be using something of the order of 9W tho.

>>>>>>>>> If it used 1A @ 9V, that's of course 9W (practically
>>>>>>>>> all heat generated internally), and nothing gets that
>>>>>>>>> hot to the touch or needs significant heatsinking.

>>>>>>>> Which is why quite a few of them came in an extruded
>>>>>>>> aluminum sleeve and got quite hot anyway.

>>>>>>> See above.

>>>>>> See above.

>>>>>>> That is no proof of any particular heat density

>>>>>> It is a reasonable indication that it might well
>>>>>> be using something of the order of 9W tho.

>>>>> No,

>>>> Yep.

>>>>> given any wart will be conservatively spec'd,

>>>> By nothing like as much that stupid claim you made
>>>> about 250mA you just plucked out of your arse.

>>> Not quite,

>> Fraid so.

>>> while I was ignoring any losses from an onboard linear regulation
>>> stage, it is exceedingly rare for any modem modern enough to
>>> be worth using today (the old speed issue) to use much power.

>> You dont even know that HIS modem is one of those.

>>> Take for example a very common older modem,
>>> there's nothing in it that consumes much power.

>> Have fun explaining how come the USR Courier HST has a 800mA plug pack.

> Because they found a supplier that would sell them for slightly less...
> 800mA is not so common a quantity and these are commodity items
> in general, nothing at all special about the supplies they use.

Irrelevant to that stupid claim about there not
being much in that modem that uses much power.

There clearly is enough for USR to supply an 800mA wall wart with it.

>>> http://69.36.189.159/usr_1034/USR_Sportster_56K_Ext.jpg

>>> IIRC, these had 12V then later 9V AC @ 1A,

>> So much for that stupid claim you made about
>> 250mA you just plucked out of your arse.

> Err, no,

Fraid so.

> that was the supply rating for the modem which obviuosly
> had to use substantially less to be able to run as designed.

Nothing like that stupid claim you made about
250mA you just plucked out of your arse.

>> Plenty of consumer modems had 1A wall warts, and needed them too.

>>> There may be an exception, but find one...

>> You found one yourself.

> Reread what was written.

No point, it remains stupid shit no matter how often its reread.

> It had 1A supply but couldn't possibly have used near 1A.

Have fun explaining the 800mA wall wart supplied with the Courier HSTs.

VERY unlikely indeed that it didnt need the bulk of that.