Actually. My tablet has a usb style power adapter. But at 30v. It won't charge on a normal one On Jan 31, 2013 3:38 PM, "Aemilianus Kehler" <[email protected]> wrote:
> Those adapters still only run on 5v just like the USB specification but > just at higher amperage not voltage, and that's total throughout amperage > not exactly what the device is using. If they had an adapter with USB with > a higher voltage good chance it would fry the device. So I'm still not > getting how a spec such as FireWire could output higher than 12v when > that's what it's main power supply provides? Besides the additional -12 v > which has a weak sauce amperage value. > > Cheers!! > > On Jan 31, 2013, at 3:11 PM, "Michael Kozakewich" < > [email protected]> wrote: > > Firewire is a specification, not an exact technology. It’s > understandable that there could be leeway in the spec to allow specific > applications to use it in different ways. From what I’ve read, most > implementations don’t go anywhere near the spec’s limits. Like 10-20 W > power instead of something crazy like 60 W. > > It’s like, there are USB chargers for tablets and things that provide WAY > more power than the ports on a laptop. > > *From:* Aemilianus Kehler <[email protected]> > *Sent:* Thursday, January 31, 2013 2:32 PM > *To:* [email protected] > *Subject:* Re: [SkullSpace-Discuss] Recording talks [Was: Crazy idea..] > > How is it possible that FireWire can have over 24 volts? Every PSU I've > worked with only supplies 12v and have a -12v lines so together you could > get 24 volts.. Soo where is the extra voltage being supplied from? Does > FireWire include some kind of transformer to boost voltage at the expense > of amperage at the lower voltage? > > Cheers!! > > On Jan 31, 2013, at 8:25 AM, "Michael Kozakewich" < > [email protected]> wrote: > > Also, I really hate it when people quote USB 2.0 speeds as 480 Mbps, > because you really only get upwards of 40 MB/s if you’re lucky (320 Mbps) > and 30 MB/s usually (240 Mbps). > So make sure you don’t get confused by that. > > Also also, keep in mind that a Firewire/USB-3.0 comparison is as stupid as > USB-1.1/Firewire. Nowadays it’s USB 3.0 vs Thunderbolt that you’ve got to > look at. > > *From:* chris kluka <[email protected]> > *Sent:* Thursday, January 31, 2013 1:47 AM > *To:* Discuss, SkullSpace <[email protected]> > *Subject:* Re: [SkullSpace-Discuss] Recording talks [Was: Crazy idea..] > > Also, don't forget that "firewire" also has a 2.0 version which is > firewire 800 that is somewhere between usb 2.0 and usb 3.0 in performance. > > > On Thu, Jan 31, 2013 at 1:38 AM, d-_-b <[email protected]> wrote: > >> On a desktop it would be ~25Volts, 6watts on a laptop it is determined by >> the battery. >> >> >> On Wed, Jan 30, 2013 at 4:30 PM, Aemilianus Kehler <[email protected]>wrote: >> >>> Sorry I should have stated that better, USB supplies 5v at .5 amps or >>> 2.5 watts total. Does FireWire use a higher voltage and amperage? >>> >>> Cheers!! >>> >>> On Jan 30, 2013, at 4:22 PM, d-_-b <[email protected]> wrote: >>> >>> Firewire shines when there is sustained data transfer over the line, >>> as well as cases where devices need to be powered by the host/hub. >>> >>> "Independent benchmark tests between USB 2.0 and IEEE-1394a show that >>> IEEE-1394a is the performance winner, even though the published rates tell >>> a different story. IEEE-1394a lends itself to >>> real-time video transfer due to higher sustained data rates. It is also >>> very useful because of its peer-to-peer topology and ability to >>> independently power CCD cameras from a host controller. >>> USB 2.0, meanwhile, has evolved into a convenient interconnect for >>> external hard drives, flash drives, and consumer-grade digital cameras, >>> owing to the availability of these ports on just >>> about every computer now sold. As previously mentioned, overall >>> sustained data rates are reduced by the master-slave topology of USB 2.0 >>> (due to overhead and increased CPU load). The inability >>> to provide substantial power is another downside, creating the need for >>> an additional connection to the high performance camera." -- >>> http://www.qimaging.com/support/pdfs/FirewireUSB.pdf >>> >>> On Wed, Jan 30, 2013 at 4:10 PM, Ace Tunes <[email protected]> wrote: >>> >>>> Lol i was just about to say, that if they hadn't been firewire it would >>>> be a shame. >>>> On Jan 30, 2013 4:09 PM, "Aemilianus Kehler" <[email protected]> wrote: >>>> >>>>> FireWire, shudders, wasn't that just to beat out transfer rates of USB >>>>> 1.0, which became obsolete with USB 2.0, and for sure is nothing compared >>>>> to 3.0 >>>>> >>>>> Cheers!! >>>>> >>>>> On Jan 30, 2013, at 4:04 PM, Mak Kolybabi <[email protected]> wrote: >>>>> >>>>> > On 2013-01-30 15:57, Benjamin Bergman wrote: >>>>> >> I remember seeing a pile of firewire camcorders at SkSp 1.0 that >>>>> had been >>>>> >> used at least once at talks done at RRC. What happened to those? >>>>> > >>>>> > I believe they were trashed. >>>>> > >>>>> > -- >>>>> > Mak Kolybabi >>>>> > <[email protected]> >>>>> > >>>>> > () ASCII Ribbon Campaign | Against HTML e-mail >>>>> > /\ www.asciiribbon.org | Against proprietary extensions >>>>> > >>>>> > _______________________________________________ >>>>> > SkullSpace Discuss Mailing List >>>>> > Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>>>> > Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>>>> _______________________________________________ >>>>> SkullSpace Discuss Mailing List >>>>> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>>>> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>>>> >>>> >>>> _______________________________________________ >>>> SkullSpace Discuss Mailing List >>>> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>>> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>>> >>> >>> >>> >>> -- >>> ) thor.robinson; >>> ) icon/phreshlyspun/ppca/skullspace >>> >>> -----BEGIN GEEK CODE BLOCK----- >>> Version: 3.1 >>> GMU/O/AT d-s:+aC++++ULPL@E----W@N!oK?w--- >>> O-M--V?PS+++PEY+PGP+t5+XRtvb++DI++D++ >>> G+e*h--rx++ >>> ------END GEEK CODE BLOCK------ >>> >>> _______________________________________________ >>> SkullSpace Discuss Mailing List >>> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>> >>> >>> _______________________________________________ >>> SkullSpace Discuss Mailing List >>> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>> >> >> >> >> -- >> ) thor.robinson; >> ) icon/phreshlyspun/ppca/skullspace >> >> -----BEGIN GEEK CODE BLOCK----- >> Version: 3.1 >> GMU/O/AT d-s:+aC++++ULPL@E----W@N!oK?w--- >> O-M--V?PS+++PEY+PGP+t5+XRtvb++DI++D++ >> G+e*h--rx++ >> ------END GEEK CODE BLOCK------ >> >> _______________________________________________ >> SkullSpace Discuss Mailing List >> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >> > > ------------------------------ > _______________________________________________ > SkullSpace Discuss Mailing List > Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss > Archive: https://groups.google.com/group/skullspace-discuss-archive/ > > _______________________________________________ > SkullSpace Discuss Mailing List > Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss > Archive: https://groups.google.com/group/skullspace-discuss-archive/ > > ------------------------------ > _______________________________________________ > SkullSpace Discuss Mailing List > Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss > Archive: https://groups.google.com/group/skullspace-discuss-archive/ > > _______________________________________________ > SkullSpace Discuss Mailing List > Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss > Archive: https://groups.google.com/group/skullspace-discuss-archive/ > > > _______________________________________________ > SkullSpace Discuss Mailing List > Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss > Archive: https://groups.google.com/group/skullspace-discuss-archive/ >
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