Forums

Barrel connectors

Started by Don Y November 15, 2013
On 11/16/2013 9:19 AM, Joe Gwinn wrote:
> In article <beo7a0FkeakU1@mid.individual.net>, Phil Allison > <phil_a@tpg.com.au> wrote: > >> "Joe Gwinn" >>> >>>> ** The term "barrel connector" must be an Americanism - cos I have never >>>> heard it before. >>>> >>>> It alludes to resemblance of the male connector to a gun barrel - right >>>> ? >>> >>> Nahh. Whiskey barrel. >> >> **See: >> >> http://www.vetco.net/catalog/images/PH-250LB-1.jpg >> >> Nahh. > > Doesn't this connector seem confused about its gender? > > Joe Gwinn >
That's just being politically correct.
On 11/16/2013 11:28 AM, krw@attt.bizz wrote:
> On Fri, 15 Nov 2013 21:49:52 -0500, Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > >> On 11/15/2013 9:41 PM, Phil Allison wrote: >>> "Phil Hobbs is insanely autistic" >>> >>> >>> ** Get cancer and die - you know nothing, fucking MORON >>> >>> >>> >>> >>>>> "Phil Hobbs is insanely autistic" >>>>>> >>>>>> Phil Allison >>>>>>> "Don Y" >>>>>>> >>>>>>>> They're everywhere! >>>>>>>> >>>>>>>> And, often CRAP! >>>>>>>> >>>>>>>> Any guidelines on selection criteria? Any worries about failure modes? >>>>>>>> >>>>>>>> Do the "inverse" variety (now popular on laptops, LCD's, etc.) offer >>>>>>>> any special advantages over the traditional style? >>>>>>> >>>>>>> >>>>>>> ** The term "barrel connector" must be an Americanism - cos I have >>>>>>> never >>>>>>> heard it before. >>>>>>> >>>>>>> It alludes to resemblance of the male connector to a gun barrel - >>>>>>> right ? > > It would be the female part that sorta resembles a gun barrel but I > doubt that's where it got its name, though. > >>>>>>> How pathetic. >>>>>> >>>>>> "Barrel connector" historically refers to M-M or F-F RF coax connectors. > > It also refers to the common DC power connector. > > e.g. <http://www.digikey.com/product-detail/en/S760/SC1052-ND/109419> > >>>>> ** Does it - news to me. >>>>> >>>>> >>>>>> Applying it to coaxial power connectors ... >>>>> >>>>> >>>>> ** Has probably got nothing to do with the above at all. >>>>> >>>>> >>>>>> is a perfectly ordinary bit of technical illiteracy of the sort we all >>>>>> know and love, probably coming from some ESL type in the Far East. >>>>> >>>>> ** You just made that up. >>>>> >>>>> >>>>>> IOW you made that up. >>>>> >>>>> ** No, you made shit up. >>>>> >>>>> I asked a simple question. >>>>> >>>>> BTW: >>>>> >>>>> Fuck off - you vile, autistic pile of septic shit. >>>>> >>>>> >>>>> >>>>> .... Phil >>>>> >>>>> >>>> >>>> Enjoy! >>>> >>>> Cheers >>>> >>>> Phil Hobbs >>>> >> >> Well, you seem to think that I'm an American, based on your poorly-aimed >> insults. Guess again. > > I'm amazed to see you as the target of Phyllis' psychotic rage. >
As the saying goes, "whatever hits the fan will not be evenly distributed." ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 USA +1 845 480 2058 hobbs at electrooptical dot net http://electrooptical.net
On Sat, 16 Nov 2013 10:32:58 -0600, amdx <nojunk@knology.net> wrote:

>On 11/16/2013 8:27 AM, John Larkin wrote: >> On Sat, 16 Nov 2013 14:58:22 +1100, "Phil Allison" <phil_a@tpg.com.au> wrote: >> >>> >>> "John Larkin" >>> "Phil Allison" >>>> >>>>> "Phil Hobbs is insanely autistic" >>>> >>>> I know Phil, >>> >>> ** No you don't. >>> >>> >>>> and he's not. >>> >>> >>> ** Impossible for someone as fucked in the head as you to even tell. >>> >>> Cos the exact same comment applies 100% to you. >>> >>> Asshole. >>> >>> >>> .... Phil >>> > Phil you seem to be free of all medication at this point and now have >demons running around in your mind. It doesn't seem like it is working well. > Please use some new abusive terms for me, your same old line is, >well, get old. > Thanks, Mike >
Autism is a birth defect. Why abuse people for a problem that they didn't cause? Many tekkies are, to some degree, asperger-y. So what? Phil seems to have Tourettes. Probably another birth defect. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
On Sat, 16 Nov 2013 11:28:33 -0500, krw@attt.bizz wrote:

>On Fri, 15 Nov 2013 21:49:52 -0500, Phil Hobbs ><pcdhSpamMeSenseless@electrooptical.net> wrote: > >>On 11/15/2013 9:41 PM, Phil Allison wrote: >>> "Phil Hobbs is insanely autistic" >>> >>> >>> ** Get cancer and die - you know nothing, fucking MORON >>> >>> >>> >>> >>>>> "Phil Hobbs is insanely autistic" >>>>>> >>>>>> Phil Allison >>>>>>> "Don Y" >>>>>>> >>>>>>>> They're everywhere! >>>>>>>> >>>>>>>> And, often CRAP! >>>>>>>> >>>>>>>> Any guidelines on selection criteria? Any worries about failure modes? >>>>>>>> >>>>>>>> Do the "inverse" variety (now popular on laptops, LCD's, etc.) offer >>>>>>>> any special advantages over the traditional style? >>>>>>> >>>>>>> >>>>>>> ** The term "barrel connector" must be an Americanism - cos I have >>>>>>> never >>>>>>> heard it before. >>>>>>> >>>>>>> It alludes to resemblance of the male connector to a gun barrel - >>>>>>> right ? > >It would be the female part that sorta resembles a gun barrel but I >doubt that's where it got its name, though. > >>>>>>> How pathetic. >>>>>> >>>>>> "Barrel connector" historically refers to M-M or F-F RF coax connectors. > >It also refers to the common DC power connector. > >e.g. <http://www.digikey.com/product-detail/en/S760/SC1052-ND/109419> > >>>>> ** Does it - news to me. >>>>> >>>>> >>>>>> Applying it to coaxial power connectors ... >>>>> >>>>> >>>>> ** Has probably got nothing to do with the above at all. >>>>> >>>>> >>>>>> is a perfectly ordinary bit of technical illiteracy of the sort we all >>>>>> know and love, probably coming from some ESL type in the Far East. >>>>> >>>>> ** You just made that up. >>>>> >>>>> >>>>>> IOW you made that up. >>>>> >>>>> ** No, you made shit up. >>>>> >>>>> I asked a simple question. >>>>> >>>>> BTW: >>>>> >>>>> Fuck off - you vile, autistic pile of septic shit. >>>>> >>>>> >>>>> >>>>> .... Phil >>>>> >>>>> >>>> >>>> Enjoy! >>>> >>>> Cheers >>>> >>>> Phil Hobbs >>>> >> >>Well, you seem to think that I'm an American, based on your poorly-aimed >>insults. Guess again. > >I'm amazed to see you as the target of Phyllis' psychotic rage.
The way to tell a Canadian from a USian is to get them to say "about." -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
On Sat, 16 Nov 2013 09:12:26 -0800, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

>On Sat, 16 Nov 2013 11:28:33 -0500, krw@attt.bizz wrote: > >>On Fri, 15 Nov 2013 21:49:52 -0500, Phil Hobbs >><pcdhSpamMeSenseless@electrooptical.net> wrote:
<...>
>>> >>>Well, you seem to think that I'm an American, based on your poorly-aimed >>>insults. Guess again. >> >>I'm amazed to see you as the target of Phyllis' psychotic rage. > >The way to tell a Canadian from a USian is to get them to say "about."
OK, I can tell you're USAian. Now all we have to do is get Phil to say it, 'ay?
Don Y <This.is@not.me> wrote:
> I've seen numerous colors: yellow, red, ubiquitous_black, etc. At > first, I was excited thinking there might be some color code that > would make sorting out what's what easier. But, that didn't pan out.
Rat Shock color-codes their replacement connectors, but hardly anybody else does.
> I am more interested in understanding how/why particular sizes > are chosen as there doesn't seem to be any sense to it all.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This is the relevant part here. The reasons probably include: People's Shining Power Supply Factory #7 had a blowout sale on adapters with a certain size plug. (For 5 cents extra, PSPSF7 will download the UL or TUeV artwork from the net and print that on there, too!) The previous product had that size, and there are still lots of adapters in stock. The previous product had a different size, but greater sales of replacement power supplies are now desired. The competition uses that size and they wanted to be plug-compatible. The competition uses a different size and they wanted to be plug- incompatible. The device has some other hole that should not have a power supply connected to it, so the power supply is chosen to not fit the wrong hole. Marketing wanted the device to be 0.5 mm thinner, so the first power supply plug wouldn't fit. Dumping 100 watts through the previous, smaller, plug didn't work, so they picked a bigger one with more contact area.
> It *seems* US firms have the barrel negative wrt center post. > And, many far east firms the opposite. > > Except when they aren't! :<
I've noticed that too. I sort of like tip-positive, if for no other reason that the barrel part is more exposed, and I'd rather have that be ground. In a house it doesn't matter so much, as DC ground should be isolated from AC ground, but in a car, DC ground is everywhere... it's nice if a cigarette-lighter cord doesn't blow its fuse when the plug end flops against the seat track or something.
> I think the biggest risk, there, is a "plug" with a "too large" I.D. > being *apparently* mated to one with the correct O.D. but smaller > I.D. -- not a very robust connection (if at all!)
Yeah, I've had that happen before. It depends on how much travel and tension the spring in the ID of the connector has. Some other notes on barrel connectors: You can get adapters from both male and female barrels to screw terminals, which is handy for prototyping. Mouser JACK21-F-TERM and JACK21-M-TERM; Sparkfun https://www.sparkfun.com/products/10287 and https://www.sparkfun.com/products/10288 ; All Electronics http://www.allelectronics.com/make-a-store/item/SDP-S/RETRO-FIT-2.1MM-COAX-SOCKET/1.html and http://www.allelectronics.com/make-a-store/item/SDP-P/RETRO-FIT-2.1MM-COAX-PLUG/1.html . You can get adapters from one size to another: http://www.digikey.com/product-detail/en/6872340FG/271-2628-ND http://www.allelectronics.com/make-a-store/category/198300/Connectors-DC-Power-Coax/Adapters/1.html You can get "extension cords" and cables with barrel connectors on one end: http://www.allelectronics.com/make-a-store/category/123/Cables-Co-Ax-Power-Plugs/1.html Standard disclaimers apply: I don't get money or other consideration from any companies mentioned. Matt Roberds
On Sat, 16 Nov 2013 12:19:25 -0500, krw@attt.bizz wrote:

>On Sat, 16 Nov 2013 09:12:26 -0800, John Larkin ><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: > >>On Sat, 16 Nov 2013 11:28:33 -0500, krw@attt.bizz wrote: >> >>>On Fri, 15 Nov 2013 21:49:52 -0500, Phil Hobbs >>><pcdhSpamMeSenseless@electrooptical.net> wrote: ><...> > >>>> >>>>Well, you seem to think that I'm an American, based on your poorly-aimed >>>>insults. Guess again. >>> >>>I'm amazed to see you as the target of Phyllis' psychotic rage. >> >>The way to tell a Canadian from a USian is to get them to say "about." > >OK, I can tell you're USAian. Now all we have to do is get Phil to >say it, 'ay?
Dat's roite, mayte. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Hi Matt,

On 11/16/2013 11:26 AM, mroberds@att.net wrote:
> Don Y<This.is@not.me> wrote: >> I've seen numerous colors: yellow, red, ubiquitous_black, etc. At >> first, I was excited thinking there might be some color code that >> would make sorting out what's what easier. But, that didn't pan out. > > Rat Shock color-codes their replacement connectors, but hardly anybody > else does.
So, it's only helpful if you are replacing one RS product with another?
>> I am more interested in understanding how/why particular sizes >> are chosen as there doesn't seem to be any sense to it all. > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > This is the relevant part here. > > The reasons probably include: > > People's Shining Power Supply Factory #7 had a blowout sale on adapters > with a certain size plug. (For 5 cents extra, PSPSF7 will download the > UL or TUeV artwork from the net and print that on there, too!) > > The previous product had that size, and there are still lots of adapters > in stock. > > The previous product had a different size, but greater sales of > replacement power supplies are now desired. > > The competition uses that size and they wanted to be plug-compatible. > > The competition uses a different size and they wanted to be plug- > incompatible. > > The device has some other hole that should not have a power supply > connected to it, so the power supply is chosen to not fit the wrong > hole. > > Marketing wanted the device to be 0.5 mm thinner, so the first power > supply plug wouldn't fit. > > Dumping 100 watts through the previous, smaller, plug didn't work, so > they picked a bigger one with more contact area.
Or, none of the above. Someone just *picked* a size and let someone else chase down the actual adapter, etc.
>> It *seems* US firms have the barrel negative wrt center post. >> And, many far east firms the opposite. >> >> Except when they aren't! :< > > I've noticed that too. I sort of like tip-positive, if for no other > reason that the barrel part is more exposed, and I'd rather have that > be ground. In a house it doesn't matter so much, as DC ground should > be isolated from AC ground, but in a car, DC ground is everywhere... > it's nice if a cigarette-lighter cord doesn't blow its fuse when the > plug end flops against the seat track or something.
I repair/rescue lots of kit (from lots of places -- not uncommon to see something with a european power plug, etc.). So, a big part of the "project" is often sorting out what the hell you need to *provide* (power) to the device -- before you can even see if it is working! (wall warts and bricks tend to get misplaced or separated fromtheir "mates") Early on, the solution I came up with was to unceremoniously *cut* the plugs off a variety of "power supplies" (which were headed for the tip) and wire them to a digitally programmable PS. So, when I have a bit of kit that *might* be worth rescuing, I can hunt down the power requirements (USUALLY written SOMEWHERE on the device *or* a WWW search -- or, GUESS!), type in V & I and then hunt for which of the multiple "ends" of my homegrown octopus cable happen to fit the device. If the results look promising, *then* worry about finding/making a real PS to marry to it!
>> I think the biggest risk, there, is a "plug" with a "too large" I.D. >> being *apparently* mated to one with the correct O.D. but smaller >> I.D. -- not a very robust connection (if at all!) > > Yeah, I've had that happen before. It depends on how much travel and > tension the spring in the ID of the connector has. > > Some other notes on barrel connectors: > > You can get adapters from both male and female barrels to screw > terminals, which is handy for prototyping. Mouser JACK21-F-TERM and > JACK21-M-TERM; Sparkfun https://www.sparkfun.com/products/10287 > and https://www.sparkfun.com/products/10288 ; All Electronics > http://www.allelectronics.com/make-a-store/item/SDP-S/RETRO-FIT-2.1MM-COAX-SOCKET/1.html > and > http://www.allelectronics.com/make-a-store/item/SDP-P/RETRO-FIT-2.1MM-COAX-PLUG/1.html
Ah, that might be nice to have on hand (one of each size). Currently, I keep "common" plug sizes on hand so I can butcher PS's that have the right V/I but wrong connector!
> You can get adapters from one size to another: > http://www.digikey.com/product-detail/en/6872340FG/271-2628-ND > http://www.allelectronics.com/make-a-store/category/198300/Connectors-DC-Power-Coax/Adapters/1.html
Hmmm... that sounds like it might be "iffy". The connectors seem pretty crappy to begin with and that just adds aother "wiggle" to the equation.
> You can get "extension cords" and cables with barrel connectors on one > end: > http://www.allelectronics.com/make-a-store/category/123/Cables-Co-Ax-Power-Plugs/1.html
Someone made a device (laptop?) in which the cord *to* the device (from the PS) ws replaceable. Either it was done to allow a single PS to be used with multiple devices *or* anticipated the cord failing (from use). Hard to imagine adding the second connector without a *good* reason!
> Standard disclaimers apply: I don't get money or other consideration > from any companies mentioned.
<grin> I notice all the "house numbers" are of the form MRI#### [Matt Roberds Industries? :>] Thanks for the references and the effort you went thru! Take a few bucks out of petty cash... ;-)
On 11/16/2013 12:12 PM, John Larkin wrote:
> On Sat, 16 Nov 2013 11:28:33 -0500, krw@attt.bizz wrote: > >> On Fri, 15 Nov 2013 21:49:52 -0500, Phil Hobbs >> <pcdhSpamMeSenseless@electrooptical.net> wrote: >> >>> On 11/15/2013 9:41 PM, Phil Allison wrote: >>>> "Phil Hobbs is insanely autistic" >>>> >>>> >>>> ** Get cancer and die - you know nothing, fucking MORON >>>> >>>> >>>> >>>> >>>>>> "Phil Hobbs is insanely autistic" >>>>>>> >>>>>>> Phil Allison >>>>>>>> "Don Y" >>>>>>>> >>>>>>>>> They're everywhere! >>>>>>>>> >>>>>>>>> And, often CRAP! >>>>>>>>> >>>>>>>>> Any guidelines on selection criteria? Any worries about failure modes? >>>>>>>>> >>>>>>>>> Do the "inverse" variety (now popular on laptops, LCD's, etc.) offer >>>>>>>>> any special advantages over the traditional style? >>>>>>>> >>>>>>>> >>>>>>>> ** The term "barrel connector" must be an Americanism - cos I have >>>>>>>> never >>>>>>>> heard it before. >>>>>>>> >>>>>>>> It alludes to resemblance of the male connector to a gun barrel - >>>>>>>> right ? >> >> It would be the female part that sorta resembles a gun barrel but I >> doubt that's where it got its name, though. >> >>>>>>>> How pathetic. >>>>>>> >>>>>>> "Barrel connector" historically refers to M-M or F-F RF coax connectors. >> >> It also refers to the common DC power connector. >> >> e.g. <http://www.digikey.com/product-detail/en/S760/SC1052-ND/109419> >> >>>>>> ** Does it - news to me. >>>>>> >>>>>> >>>>>>> Applying it to coaxial power connectors ... >>>>>> >>>>>> >>>>>> ** Has probably got nothing to do with the above at all. >>>>>> >>>>>> >>>>>>> is a perfectly ordinary bit of technical illiteracy of the sort we all >>>>>>> know and love, probably coming from some ESL type in the Far East. >>>>>> >>>>>> ** You just made that up. >>>>>> >>>>>> >>>>>>> IOW you made that up. >>>>>> >>>>>> ** No, you made shit up. >>>>>> >>>>>> I asked a simple question. >>>>>> >>>>>> BTW: >>>>>> >>>>>> Fuck off - you vile, autistic pile of septic shit. >>>>>> >>>>>> >>>>>> >>>>>> .... Phil >>>>>> >>>>>> >>>>> >>>>> Enjoy! >>>>> >>>>> Cheers >>>>> >>>>> Phil Hobbs >>>>> >>> >>> Well, you seem to think that I'm an American, based on your poorly-aimed >>> insults. Guess again. >> >> I'm amazed to see you as the target of Phyllis' psychotic rage. > > The way to tell a Canadian from a USian is to get them to say "about."
That's really as much an East-West divide as anything. People from Washington State say something like "abaaout", except broader than that. (Americans trying to mimic the regional Ontario pronunciation that reminds them of a sailing vessel are just cute. I imagine it's roughly on a par with the way fake German, e.g. "blinkenlights", sounds to a real German.) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 USA +1 845 480 2058 hobbs at electrooptical dot net http://electrooptical.net
John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> writes:

> On Sat, 16 Nov 2013 10:32:58 -0600, amdx <nojunk@knology.net> wrote: > >>On 11/16/2013 8:27 AM, John Larkin wrote: >>> On Sat, 16 Nov 2013 14:58:22 +1100, "Phil Allison" <phil_a@tpg.com.au> wrote: >>> >>>> >>>> "John Larkin" >>>> "Phil Allison" >>>>> >>>>>> "Phil Hobbs is insanely autistic" >>>>> >>>>> I know Phil, >>>> >>>> ** No you don't. >>>> >>>> >>>>> and he's not. >>>> >>>> >>>> ** Impossible for someone as fucked in the head as you to even tell. >>>> >>>> Cos the exact same comment applies 100% to you. >>>> >>>> Asshole. >>>> >>>> >>>> .... Phil >>>> >> Phil you seem to be free of all medication at this point and now have >>demons running around in your mind. It doesn't seem like it is working well. >> Please use some new abusive terms for me, your same old line is, >>well, get old. >> Thanks, Mike >> > > Autism is a birth defect. Why abuse people for a problem that they didn't cause? > > Many tekkies are, to some degree, asperger-y. So what?
Yes quite, never heard it used as a term of abuse before hanging out here. I don't know much about Autism, but it is ironic that those who throw that "insult" around are *precisely* those who appear, shall we say, a bit socially challenged.
> Phil seems to have Tourettes. Probably another birth defect.
Hmm, does Tourettes still work with the written word? -- John Devereux