Re: [GTALUG] mysterious restarts

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Alvin wrote: > The hydrogen to power process works quite well. > The problem is getting hydrogen into a convenient storage format. A few (10?) years ago I head a Science Friday show with guest George Olah where he made a strong case for using hydrogen

Re: [GTALUG] RJ45 crimper -- good ones?

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I've got one similar to this: https://shop.primespec.com/100054c/ez-rjpro-hd-crimp-tool-platinum-tools.html It's meant for the kind of RJ-45 plugs where you can push the wires right through the front of the plug, to make sure you've got them in the c

Re: [GTALUG] RJ45 crimper -- good ones?

On 06/16/2016 10:27 PM, opengeometry--- via talk wrote: On Thu, Jun 16, 2016 at 02:12:16AM -0400, Peter Renzland wrote: On Jun 15, 2016, at 23:43, William Park via talk wrote: I want to buy RJ45 (8c8p) crimper, so that I can make ethernet cable of exact length I need. Which brand is good qual

Re: [GTALUG] RJ45 crimper -- good ones?

On Thu, Jun 16, 2016 at 02:12:16AM -0400, Peter Renzland wrote: > > On Jun 15, 2016, at 23:43, William Park via talk wrote: > > > > I want to buy RJ45 (8c8p) crimper, so that I can make ethernet cable > > of exact length I need. Which brand is good quality? > > I have a Henglong RJ11 - RJ12 -

Re: [GTALUG] mysterious restarts

> Is its PS also 240v? It might be a little more robust. Oops, I mean watts. A 300w supply might be a little more sag and spike resistant. --- Talk Mailing List talk@gtalug.org https://gtalug.org/mailman/listinfo/talk

Re: [GTALUG] mysterious restarts

I thought I would attempt to return to the topic. Although this thread has been interesting I would like to return to the power supply hypothesis. > Any suggestions? > > It looks as if the power dips momentarily and the computer reboots, >From the specs it looks like the unit should be able to ab

Re: [GTALUG] mysterious restarts

On 06/16/2016 03:47 PM, Lennart Sorensen wrote: > On Thu, Jun 16, 2016 at 11:55:53AM -0400, James Knott via talk wrote: >> > Data General Nova & Eclipse computers had a choice of AC power or >> > various clock rates derived from a crystal. The crystal wasn't all that >> > accurate, but normally AC

Re: [GTALUG] mysterious restarts

On Thu, Jun 16, 2016 at 12:53:15PM -0400, Peter Hiscocks via talk wrote: > The Commodore PET and 64 had a 60Hz real-time-interrupt that did a bunch > of housekeeping. You could patch your own routines into it, which was > really handy. Wow so the original C64 actually passed 9V AC on a pair of pow

Re: [GTALUG] mysterious restarts

On Thu, Jun 16, 2016 at 11:55:12AM -0400, Scott Allen wrote: > My first computer, a Poly-88 8080 based system, did (I still have it). > OK, certainly a long time ago. > The transformer used for the linear power supply was tapped, rectified > and

Re: [GTALUG] mysterious restarts

On Thu, Jun 16, 2016 at 11:55:53AM -0400, James Knott via talk wrote: > Data General Nova & Eclipse computers had a choice of AC power or > various clock rates derived from a crystal. The crystal wasn't all that > accurate, but normally AC is. It would be pretty accurate for sure. > The Data Gen

Re: [GTALUG] mysterious restarts

On 06/16/2016 12:53 PM, Peter Hiscocks via talk wrote: > The Commodore PET and 64 had a 60Hz real-time-interrupt that did a bunch > of housekeeping. You could patch your own routines into it, which was > really handy. > > After a particularly nasty bug, that's where I learned about the > importance

Re: [GTALUG] mysterious restarts

>> Who built a computer that cared about AC frequency to drive the real >> time clock? Never heard of anyone doing that. > > My first computer, a Poly-88 8080 based system, did (I still have it). > > > The transformer used for the linear power sup

Re: [GTALUG] mysterious restarts

On 06/16/2016 11:00 AM, Lennart Sorensen wrote: > On Wed, Jun 15, 2016 at 06:15:30PM -0400, James Knott via talk wrote: >> > At work years ago, we had "no break power", where incoming AC ran a >> > motor connected to an alternator and an 8 ton flywheel. When the power >> > failed, a clutch would k

Re: [GTALUG] mysterious restarts

(Since this discussion has long ago gone off topic, I may as well continue.) On 16 June 2016 at 11:00, Lennart Sorensen via talk wrote: > Who built a computer that cared about AC frequency to drive the real > time clock? Never heard of anyone doing that. My first computer, a Poly-88 8080 based

Re: [GTALUG] Thinkpad [3]: Aligning size of dm-crypt and partition/filesystem

On Wed, Jun 15, 2016 at 11:59 PM, Allan Zhang wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA512 > > Matt, > > just curious, is there any reason you chose a MBR +UEFI boot? > > Surely your laptop came with Windows, which mandates that GPT accompanies > UEFI. > I think because this was

Re: [GTALUG] mysterious restarts

On Wed, Jun 15, 2016 at 06:15:30PM -0400, James Knott via talk wrote: > At work years ago, we had "no break power", where incoming AC ran a > motor connected to an alternator and an 8 ton flywheel. When the power > failed, a clutch would kick in the diesel, with the flywheel maintaining > the powe

Re: [GTALUG] mysterious restarts

On 06/15/2016 11:45 PM, Alvin Starr via talk wrote: >> I'm no EE, but here's my guess. >> >> Energy losses are proportional to the square of the current and thus >> the square of the inverse of the voltage. >> (750/600)^2 = 1.5625 >> So they would save more than a third of the transmission los

Re: [GTALUG] [GTALUG-Announce] Linux in the Park 2016

... amazing, this will be a most interesting and fun event and I am looking forward to "rubbing elbows" with other Linux fans and users ... thank you for putting together an event that will be both educational and fun 😁 On Wed, Jun 15, 2016 at 11:12 AM, Myles Braithwaite via talk < talk@gtalug.org