tag:blogger.com,1999:blog-7534060879324399856.post4726732261460538659..comments2023-05-19T09:05:53.947-07:00Comments on Free Geek Vancouver Volunteer Blog: Festive Meets NerdyAUTUINhttp://www.blogger.com/profile/11713793126615904139noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-7534060879324399856.post-42436287223660166872012-04-07T02:56:24.275-07:002012-04-07T02:56:24.275-07:00You could recycle the innards by putting SMD orang...You could recycle the innards by putting SMD orange LEDs up where the heater used to go, that would be neat.<br /><br />Also, make a "USB vacuum pendrive" but with orange LEDs and blue for when when its really being thrashed :-)<br />For extra points have a little bargraph so the amount of glowiness changes depending on usage.conundrumhttps://www.blogger.com/profile/00367656902932421352noreply@blogger.comtag:blogger.com,1999:blog-7534060879324399856.post-12661547900950122482011-12-26T11:17:19.222-08:002011-12-26T11:17:19.222-08:00@Keith, @Graeme: Neat, thanks.
@Hemingray, agreed...@Keith, @Graeme: Neat, thanks.<br /><br />@Hemingray, agreed -- I'd prefer not to destroy good vintage stuff, and to that end I've got a stack of dead Mesa Boogie tubes from a guitar shop lined up for this kind of project. Unfortunately I haven't figured out how to open them up yet. The other problem is what to do with old but probably functional tubes; I don't need them but I doubt they'd get any attention on ebay and locally there's a store that has quite a large stock, brand new and warehoused for probably 40 years.AUTUINhttps://www.blogger.com/profile/11713793126615904139noreply@blogger.comtag:blogger.com,1999:blog-7534060879324399856.post-5119238579904860602011-12-25T14:28:42.448-08:002011-12-25T14:28:42.448-08:00While we're picking on you, the black substanc...While we're picking on you, the black substance inside tubes isn't carbon, it's a barium "getter". It's intentionally reactive material intended to soak up trace impurities in the tube's vacuum. When it goes white, that means it's fully consumed and the tube is probably flooded with air.<br /><br />Incidentally, in cryogenic vacuum systems, activated charcoal often fulfills the same role. It's cold enough in these systems that any trace molecules simply need something to stick to, no chemical reaction required.Unknownhttps://www.blogger.com/profile/04727796630649736656noreply@blogger.comtag:blogger.com,1999:blog-7534060879324399856.post-75521605211930693072011-12-25T10:46:50.428-08:002011-12-25T10:46:50.428-08:00Nice, but I would have used a slightly more useles...Nice, but I would have used a slightly more useless TV tube, as the 35L6 you used for this is a popular output tube for radios. (unless this particular tube was bad to begin with)Hemingrayhttps://www.blogger.com/profile/07627075463275409195noreply@blogger.comtag:blogger.com,1999:blog-7534060879324399856.post-60562739752921531062011-12-25T08:29:05.391-08:002011-12-25T08:29:05.391-08:00Nice work ... However just one correction. Propan...Nice work ... However just one correction. Propane torch does not equal "blowtorch". Blowtorches are the old and rarely used versions of torches from yesteryear. See following pic:<br /><br />http://oldstersview.files.wordpress.com/2008/03/blowtorch.jpgKeithhttps://www.blogger.com/profile/07929987864000528670noreply@blogger.com