- Copper wire instead of fuses? - 5 Updates
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- Source for belts? - 2 Updates
- My Toshiba Laptop comes on briefly and goes off. - 1 Update
legg <legg@nospam.magma.ca>: Mar 13 02:46PM -0500 On Sat, 12 Mar 2016 10:32:24 -0000, "Gareth Magennis" >Cheers, >Gareth. It's a cost and marketing consideration. This product doesn't carry UL safety listing, so the issue of fuse behaviour under single-fault abnormals may never have been raised. As it is in low voltage circuitry, the issue may never have been raised. The use of wire fuses, even when considered acceptible, required dedicate hardware and specific wire manufactured for that purpose in potentially hazardous applications. This application represents an energy hazard, rather than a shock hazard. Low voltage fuses with DC ratings are expensive, but do exist. RL |
"Ron D." <Ron.Dozier@gmail.com>: Mar 13 05:41PM -0700 I remember TV's with the wire method too. They almost always were routed out under the wire. I would guess that the typical user does not own a soldering iron. |
hrhofmann@att.net: Mar 13 09:39PM -0700 I have seen some Christmas light strings that have a copper wire in the plug in place of the more common regular miniature fuses that 95% of the manufacturers use. Can only tell if you take the plug apart with pliers and hammer, and that is the end of the whole plug assembly, so obviously a one-time event. |
John-Del <ohger1s@aol.com>: Mar 14 06:41AM -0700 On Sunday, March 13, 2016 at 10:26:50 AM UTC-4, John-Del wrote: > > I don't recall why this was done as opposed to using a glass pigtail fuse or socketed fuse for that matter. > > Any recollection of which manufacturers used that method of fusing? > Snort... "recollection"? I wear a name tag so I remember who I am. But I KNOW my older brother will remember not only who used it but what gauge of wire as well. I'll post back later today. I talked to my brother yesterday and while he remembers the wire fuse, he doesn't remember the manufacturer(s) either. He thinks it was used as line or B+ while I think it was filament protection. Just too long ago. If Lenny is looking in, maybe he will remember. |
legg <legg@nospam.magma.ca>: Mar 14 12:39PM -0500 On Mon, 14 Mar 2016 06:41:43 -0700 (PDT), John-Del <ohger1s@aol.com> wrote: >> Snort... "recollection"? I wear a name tag so I remember who I am. But I KNOW my older brother will remember not only who used it but what gauge of wire as well. I'll post back later today. >I talked to my brother yesterday and while he remembers the wire fuse, he doesn't remember the manufacturer(s) either. He thinks it was used as line or B+ while I think it was filament protection. Just too long ago. >If Lenny is looking in, maybe he will remember. Wire fuses were used in old mains fuse boxes, where wire was located between screw-down terminals in a removable shielded plug assembly, with isolated finger pull tabs. Basically a fuse assembly with replaceable fuse link. Too easily defeated or misapplied with non-standard fuse wire, and a source of combustion. You can still buy "fuse wire" in the UK. Google it. RL |
N_Cook <diverse@tcp.co.uk>: Mar 14 04:39PM The pcb is multilayer , and all 6 pins of the switch are used. Looks as though problem was a low battery that recovered and drooped between uses, as such a light loading, 22K in line with battery to transistor etc. But as far as I can see, after deeper exploration, there are 2 seriesed switch actions of 2 poled for one simple on/off one pole function. |
jurb6006@gmail.com: Mar 13 11:19AM -0700 >"I can imagine a method that used heat to move the air, perhaps with >a >plasma to make it fast. " The singing arc. However it depends on how you want to be about this. If someone want no moving parts that is fine and the singing arc works for that. But your eardrum still moves as well as the linage from it to the cochlea. Plus the fact that the air itself moves. |
legg <legg@nospam.magma.ca>: Mar 13 02:22PM -0500 On Sun, 13 Mar 2016 15:34:07 -0000, MJC <gravity@mjcoon.plus.com> wrote: >plasma to make it fast. (Like a modulated lightning flash.) But I cannot >be bothered to construct a search to find out if it has been done >successfully... See Thermoachoustic Technology. www.lanl.gov/thermoacoustics/Pubs/ RL |
Look165 <look165@numericable.fr>: Mar 13 07:48PM +0100 I heard from many girls that size doesn't matter !! LOL DaveC a écrit : |
N_Cook <diverse@tcp.co.uk>: Mar 13 07:50PM On 13/03/2016 16:22, Don Bruder wrote: > Like I say, I've never actually gone to the effort of tracking it down, > and I have no idea if it was a failing mind's invention, or reality, > but... <shrug> Seems to me like it COULD work. Wasn't there some scheme to generate sound for large area advertising by using aurora? presumably someone realised polar bears don't buy much stuff. |
MJC <gravity@mjcoon.plus.com>: Mar 13 07:53PM In article <5aae6e94-41fc-4a9a-832b-e165deb33e98@googlegroups.com>, jurb6006@gmail.com says... > However it depends on how you want to be about this. If someone want no moving parts that is fine and the singing arc works for that. > But your eardrum still moves as well as the linage from it to the cochlea. > Plus the fact that the air itself moves. That recalls some old saw about whether anything is real if not observed. I think sound has been reproduced even if no-one hears. As to moving air counting as a "part"... In space no-one can hear spurious arguments! Mike. |
Chris Jones <lugnut808@spam.yahoo.com>: Mar 14 10:32AM +1100 On 14/03/2016 02:34, MJC wrote: > be bothered to construct a search to find out if it has been done > successfully... > Mike. http://www.roger-russell.com/ionovac/ionovac.htm#ionofane http://www.ebay.com/itm/171837115818 |
"pfjw@aol.com" <pfjw@aol.com>: Mar 14 07:04AM -0700 On Saturday, March 12, 2016 at 11:16:48 AM UTC-5, DaveC wrote: > No? > Thanks. > (op) THE *MOTOR PULLEY* DIAMETER..... Not the pinch roller. Peter Wieck Melrose Park, PA |
legg <legg@nospam.magma.ca>: Mar 14 12:27PM -0500 On Mon, 14 Mar 2016 07:04:19 -0700 (PDT), "pfjw@aol.com" >THE *MOTOR PULLEY* DIAMETER..... Not the pinch roller. >Peter Wieck >Melrose Park, PA Question was re flywheel diameter differences. Motor pulley drives both. Same belt on two different dia flywheels, yet obtains same spindle rotation at their separate pinch rollers. Identical belt speed should drive a smaller dia flywheel faster. Motor speed does not account for this physical difference, as it is uniform for both functions. Supposition is that the difference in flywheel dia is related to belt thickness, as one flywheel is inside, and other is outside the drive belt loop. RL |
N_Cook <diverse@tcp.co.uk>: Mar 14 04:36PM On 14/03/2016 17:27, legg wrote: > thickness, as one flywheel is inside, and other is outside the drive > belt loop. > RL That would be lead to a much closer pair of pulley diameters. But then although you have a free range of pulley sizes, as cast and machined, the sintered metal bearings come in only discrete sizes of * x 0.1mm , so you have to increase/decrease the pulley diameter ratio to then be compatible to 2 available bearing diameters and hence spindle diameters. That is the reason i'd go for |
Tim R <timothy42b@aol.com>: Mar 13 10:05AM -0700 > > Let me know the easy steps to replace the rubber on this part with an > > O-ring from the hardware store. > Then, replace it with a flat O-ring out of a catalog, McMaster-Carr and/or any of a dozen other sources. Don't forget to re-lubricate the bearing... This is an extreme nitpick but maybe somebody would like to know. To the general population an O-ring is any washer or gasket with a round cross section. I'm not so sure anybody thinks a flat gasket is actually an O-ring, but most people think any round one is. Not so. Mechanical engineers have a technical definition of the O-ring, and it is not shape but function. See here: http://www.row-inc.com/sizes.html If the gasket of circular cross section is sized so that it can rotate inside that groove, then and only then is it an O-ring. Okay, nobody cares. But now you know. (just try confusing a magazine and a clip on a firearms forum, and you'll see what abuse you get) |
"pfjw@aol.com" <pfjw@aol.com>: Mar 14 07:08AM -0700 On Sunday, March 13, 2016 at 1:05:19 PM UTC-4, Tim R wrote: > If the gasket of circular cross section is sized so that it can rotate inside that groove, then and only then is it an O-ring. > Okay, nobody cares. But now you know. > (just try confusing a magazine and a clip on a firearms forum, and you'll see what abuse you get) All true. But, and however, go into an industrial supply house and ask for a gasket... you will likely get something hard and made of a fibrous material, but also flat. Ask for a flat O-ring, and you are far more likely to get what you want. Search in McMaster Carr - get roughly the same results. Further to this, and in the specific application given, a true O-ring of the correct diameter would serve just as well as a flat "gasket". Peter Wieck Melrose Park, PA |
janetnkansah1@gmail.com: Mar 14 05:22AM -0700 > Pls > My Toshiba laptop Statellite C855-S5356, When switched on boots up to the bios stage then the screen will change to some multi-checker boxes (as if using a scratched DVD in a DVD player)then the screen will go off for about 10 seconds then it will repeat that process(on and off)but takes a longer time to come on again each successive time. I tried an external monitor but there was no display. I removed the harddisk but the problem remained the same, remove the battery-same. > I will be happy if l can get some help here. Thanks I fully understand now thank you. |
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