Ping Larkin
in [Design]
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From: Joerg on 30 Oct 2009 13:00 Michael A. Terrell wrote: > Joerg wrote: >> Michael A. Terrell wrote: >>> Joerg wrote: >>>> Michael A. Terrell wrote: >>>>> Joerg wrote: >>>>>> Michael A. Terrell wrote: >>>>>>> Joerg wrote: >>>>>>>> Easy with a mechanical timer if needed. But that's what the CD4060 was >>>>>>>> invented for. Maybe that's too difficult for a HVAC mfg ... >>>>>>> Mechanical timers ignore power outages. >>>>>>> >>>>>> You can make both do either/or. Mech times with li'l tic-toc movement in >>>>>> there, got one of those here. A CD4060 can be run off a large cap for a >>>>>> looong time. If designed right, and that's the trick. >>>>> I prefer the mechanical design, because of the high number of >>>>> lightning strikes around here. If you want to sign off on a CMOS >>>>> design, go ahead. Its your reputation, not mine. >>>>> >>>> I did a while ago. Most of it is installed in your neck of the woods. >>>> Works great, it's through two seasons now. One must understand the >>>> mechanisms, paths, spectra and remedial action when it comes to lightning. >>> >>> Tell that to people who lose homes and businesses to lightning. >>> >> Because builders and codes in the US fail to provide for proper >> lightning arresters and we build houses from lumber. > > > So, you've never seen lightning hit a poured concrete building? > Pieces of it scattered all over the place and exposed, partially > vaporized rebar. That building did have a wood roof, but the lightning > struck the walls because of the required rebar and damp concrete. I > suppose you'll tell me that never happens in Europe, because they are so > much smarter and that the laws of physics don't apply there? They do have smarter regs over there. For example, one house I stayed at last year had lightning protection all along the gables, the top of the roof _and_ the wall perimeter. Guess they forgot to install the latter at your TV station. And, why was the concrete damp? That's not supposed to happen as it will gradually eat away at the rebar, causing structural issues down the road even if lighnting never hits. Then there's the whole mold issue. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joerg on 30 Oct 2009 13:03 krw wrote: > On Thu, 29 Oct 2009 17:01:39 -0700, Joerg <invalid(a)invalid.invalid> > wrote: > >> krw wrote: >>> On Thu, 29 Oct 2009 11:10:28 -0700, Joerg <invalid(a)invalid.invalid> >>> wrote: [...] >>>> I was thinking about a 6" or 8" inline fan and making my own filter. But >>>> I doubt that's going to be even close in terms of required airflow. >>> I doubt it. Any filter worth a damn is going to be big. >>> >> I know. That's why I was hoping to find a decent integrated unit. Cut >> hole, put in, wire up, connect large duct. But nope :-( >> >> >>> BTW, I wouldn't have one of these beasts here in AL. Too humid. >> >> Very different out here. Summers are typically bone-dry. Not quite like >> Arizona but almost. Occasionally a sea breeze wafts in but that cools us >> down so no need for fancy cooling schemes when that happens. > > Most use heat pumps year round here. We haven't had the house open > more than a few days so far this fall. It was quite warm late this > fall and it's been raining since. Last year was beautiful this time > of year. This year, not so much. Heat pumps are a no-no for us. PG&E has the monopoly and once you get above baseline (with a heat pump you will) they really sock it to you. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Thompson on 30 Oct 2009 13:07 On Fri, 30 Oct 2009 10:00:25 -0700, Joerg <invalid(a)invalid.invalid> wrote: >Michael A. Terrell wrote: >> Joerg wrote: >>> Michael A. Terrell wrote: >>>> Joerg wrote: >>>>> Michael A. Terrell wrote: >>>>>> Joerg wrote: >>>>>>> Michael A. Terrell wrote: >>>>>>>> Joerg wrote: >>>>>>>>> Easy with a mechanical timer if needed. But that's what the CD4060 was >>>>>>>>> invented for. Maybe that's too difficult for a HVAC mfg ... >>>>>>>> Mechanical timers ignore power outages. >>>>>>>> >>>>>>> You can make both do either/or. Mech times with li'l tic-toc movement in >>>>>>> there, got one of those here. A CD4060 can be run off a large cap for a >>>>>>> looong time. If designed right, and that's the trick. >>>>>> I prefer the mechanical design, because of the high number of >>>>>> lightning strikes around here. If you want to sign off on a CMOS >>>>>> design, go ahead. Its your reputation, not mine. >>>>>> >>>>> I did a while ago. Most of it is installed in your neck of the woods. >>>>> Works great, it's through two seasons now. One must understand the >>>>> mechanisms, paths, spectra and remedial action when it comes to lightning. >>>> >>>> Tell that to people who lose homes and businesses to lightning. >>>> >>> Because builders and codes in the US fail to provide for proper >>> lightning arresters and we build houses from lumber. >> >> >> So, you've never seen lightning hit a poured concrete building? >> Pieces of it scattered all over the place and exposed, partially >> vaporized rebar. That building did have a wood roof, but the lightning >> struck the walls because of the required rebar and damp concrete. I >> suppose you'll tell me that never happens in Europe, because they are so >> much smarter and that the laws of physics don't apply there? > > >They do have smarter regs over there. For example, one house I stayed at >last year had lightning protection all along the gables, the top of the >roof _and_ the wall perimeter. Guess they forgot to install the latter >at your TV station. > >And, why was the concrete damp? That's not supposed to happen as it will >gradually eat away at the rebar, causing structural issues down the road >even if lighnting never hits. Then there's the whole mold issue. Best lightening protection is to build near a structure (or hill in my case) distinctly taller than yours. However that does not guarantee against all events. Some years ago a utility distribution yard 2.5 miles from me was struck. The resulting surge traveled thru the _underground_ wiring and hit my house, knocking out several PC's, several TV sets, and numerous light dimmers ;-) I've since added a whole-house surge block as well as UPS's. I even have a UPS on the wireless phone system ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | With Half My Brain Tied Behind My Back Still More Clever Than Mr.Prissy Pants
From: dagmargoodboat on 30 Oct 2009 13:41 On Oct 14, 2:37 pm, John Larkin <jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: > On Wed, 14 Oct 2009 12:12:03 -0700 (PDT), dagmargoodb...(a)yahoo.com > wrote: > > >On Oct 14, 1:03 pm, John Larkin wrote: > >> On Wed, 14 Oct 2009 17:35:08 +0100, Martin Brown wrote: > > >> >But in the USA it is also the enormous portions of food at the popular > >> >restaurants that plays a part in supersizing the population. > > >> It's not a conspiracy; the restaurants offer what people want. > > >That ought not be allowed. The government should only allow people to > >eat at certain approved restaurants, and dictate and carefully control > >what those restaurants serve, the portion sizes that will be allowed-- > >according to each person's needs vis-a-vis calories, obesity, health > >factors, etc.--the prices that can be charged, adjusted for each > >person's ability to pay, and so forth. Violators should be fined and > >jailed. > > Sounds like the ration books in Cuba. They keep everybody trim. > > John Oh, the new health care bill covers this. Well, halfway. http://docs.house.gov/rules/health/111_ahcaa.pdf See Subtitle C, sec. 2572, or just search for "restaurants" or "vending". They thought of everything. -- Cheers, James Arthur
From: Michael A. Terrell on 30 Oct 2009 16:49
Jim Thompson wrote: > > On Fri, 30 Oct 2009 02:04:57 -0400, "Michael A. Terrell" > <mike.terrell(a)earthlink.net> wrote: > > > > >John Larkin wrote: > >> > >> On Thu, 29 Oct 2009 21:32:08 -0400, "Michael A. Terrell" > >> <mike.terrell(a)earthlink.net> wrote: > >> > >> > > >> >krw wrote: > >> >> > >> >> Most use heat pumps year round here. We haven't had the house open > >> >> more than a few days so far this fall. It was quite warm late this > >> >> fall and it's been raining since. Last year was beautiful this time > >> >> of year. This year, not so much. > >> > > >> > > >> > I've only had one day cool enough to open all the doors and windows > >> >this fall. > >> > >> We had a few days this summer warm enough to open the doors and > >> windows. > >> > >> John > > > > > > I'm waiting for winter so I can fix the mess made by the ID10Ts who > >installed the central air when my dad was staying here. They set the pad > >on a tree stump that has rotted, so it is leaning about 25 degrees away > >from the house. It is a package unit, so I have to remove the ductwork, > >wiring and drain pipe, then move it to the garage. Then I have to set > >forms and pour about 25, 90 pound bags of Quickcrete. I didn't want the > >damn thing, but after they cut all the holes in the foundation and > >floors, I'm stuck with it. I have never used it, in the ten years I've > >lived here. I just air condition the rooms I'm using, then open the > >doors to those rooms to cool the rest of the house at night. > > Around here we have a company that can pump concrete under such a > thing and bring it up to level. Next door neighbor had a driveway > panel that had settled ~2" along one joint... they pumped it up to > match the adjacent panel. I can have the same thing done, if I don't eat for the next six months. -- The movie 'Deliverance' isn't a documentary! |