I saw an ad for a 40 KV probe that said "Not for microwave oven repair" like it was a warning. What's the danger in that?
-- Reply in group, but if emailing add another zero, and remove the last word.
Wrong polarity?
-- Service to my country? Been there, Done that, and I\'ve got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida
That's why there's Freecycle
On Sun, 17 Dec 2006 22:05:24 GMT, Gave us:
Top posting Usenet retard. The remark is retarded too. No one is surprised.
Yes, that's a pity. Particularly with things like cell phones and digital cameras: Those beasts are true engineering marvels. Not only are they non-fixable when they break -- neither by the so-inclined nor by a service shop -- but they are not meant to be fixed. My three-year-old digital camera (Canon S50, one of the better compact models albeit not compact by
2006 standards) is slowly falling apart after having taken some 8.000 pictures. In a year or so it will be replaced by something new, and not even its perfectly good amazing-by-all-reasonable-standards 1GB microdrive will find further use.Cameras used to be high-quality optomechanical devices which, given good maintenance, could last many decades. When my children are old enough to inherit my Nikon F3 and FE2 (a true jewel!) they won't be able to find film for it or get it developed. Heck, they won't even know what those things are. They'll probably try to take pictures holding the camera at a foot's distance from their puzzled faces.
--Daniel
[snip]
Would you go back to the "brick" phone to get repair-ability ??
The consumer demands have driven compactness.
Personally, I like my "V" phone with full QWERTY keyboard ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Yeah, i'm obsessive in that way as well. It really offends my sense of thrift and it's a waste of resources to have to throw stuff away. The worst case was a 4 slice toaster that I bought new in 1976 - kept repairing it for years, shortening the element length, replacing when too short by rewinding the mica cards etc. Quite sad really. But, fixing stuff is cheating the consumer society mantra and is very satisfying overall :-).
My father was the same - built our first tv from wwII radar equipment,
5" round green screen tube and oil filled magnifier on the front. I guess he is really to blame for at least some of it...Chris
Ah, Nikon, an engineers camera indeed. My first decent camera was a Nikkormat FT2, bought new in the 70's and still functionally as good as the day I bought it. Since Ebay, have collected quite a few others, including a couple of F2's bought faulty and fixed. The F2A example has just gone to my elder lad as a present for getting good enough grades to get into uni.
I lusted after an F2 in the 70's, but could never afford one...
Chris
Possible - all the micrwave ovens i've seen ground the anode and run the cathode from a minus hv, probably to minimise potential between the heater and hv windings...
Chris
Just watch out for any electolytics in there. On the Minolta here the cap began to leak and eat up that little flex board. The only reason I found out was when the shutter quit. Now it has a new cap of much better quality.
-- Regards, Joerg http://www.analogconsultants.com
Yes! That would finally prevent people from incessantly yapping on their cell phones. Their elbows would simply cramp up.
Somehow the PC industry seem to have missed the boat there so far. Seems like you can't run most PC programs such as CAD on a PDA/handheld. I have no idea why they haven't figured that out yet while much smaller cameras contain a ton more memory.
How do you type on that without getting into carpal tunnel issues?
-- Regards, Joerg http://www.analogconsultants.com
Naaah! I just love my "V", QWERTY keyboard, text messaging just like in my old Motorola "PageWriter" 2000X two-way pager days, plus *real* E-mail ;-)
I still have that pager, if anyone is interested... and if you can find that kind of service anymore... WebLink Wireless is defunct.
Who wants to do CAD on a PDA? I rarely even take my laptop out of the house anymore.
Carpal tunnel ?:-)
The keyboard is 1.5" X 4"
I use a retractable eraser as a stylus to avoid "fat-fingering" it ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
It tends to be slow flash ROM, though, not fast DRAM or SRAM
For CAD applications, I imagine the limiting factors are the display -- most PDAs are around 320x240 which some high-end ones are 640x480, but neither begins to compare with the typical 1600x1200 of desktops or even the 1280x800 of laptops --, and the fact that by the time you start carrying around a standard-sized keyboard and mouse for your PDA, you're not *that* far away in size & weight from an ultra-compact laptop.
I don't either but that's because of SW bloat and subsequently dismal battery life. If it quits after less than 1-/2 hrs, what good does it do? Plus laptops have become bulkier instead of smaller. Man, do I miss those old Compaq Contura laptops.
I did tons of CAD work on trains and airplanes even with my very first laptop from Wang. Got half a Doppler board done in an Intercity train on the way from Ulm to Cologne. Heck, they even served pretty good coffee.
The screen of that Wang was maybe 8" diagonal, 200*400 pixels or so and there was no backlighting. No problem at all. I'd do CAD on a handheld if they ever become "real" PCs. That means enough RAM because processor horsepower doesn't matter when drafting.
Got to have good eyes. Or good glasses ;-)
:-)))
-- Regards, Joerg http://www.analogconsultants.com
Safe with the F2 and others of that ilk. Manual throughout, other than for the cds meter. Have seen similar problems with some Contax and Canon programmed shutter models though.
Battery holder corrosion spreading into the wiring is a serious problem on some of the older models. Eats through the adjacent wires and means a complete strip down, front off to fix it in most cases...
Chris
I suggested adding a full wave bridge to a TV HV probe once. I thought that I had started WW-III, from the nasty e-mail that poured in. One idiot told me that the two diode drops would destroy the accuracy. 1.2 volt loss on a 35 KV meter?
-- Service to my country? Been there, Done that, and I\'ve got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida
You don't need that much resolution. I did lots of CAD on a 1st generation laptop from Wang that had a small 200*400 screen without backlight. Worked fine. It also did not have a mouse so I drafted whole big schematics with hardly more than arrow keys, shifts and macros. The beauty is that even that old thing ran many hours on a simple NiCd battery while "modern" ultra-compacts conk out in no time. It even had a built-in printer but I've never needed that.
The other concern is that I really don't like the idea of a $2k laptop sitting unattended in some lab, which I found to be unavoidable at times. Not that it is stolen but things can get crushed in there easily.
-- Regards, Joerg http://www.analogconsultants.com
The old SRT100 had another issue. The mercury battery became unobtanium. I was lucky that I saved some OA91 diodes which could lop off 200mV so I can use silver cells now. These are also much cheaper.
-- Regards, Joerg http://www.analogconsultants.com
Fuses generally blow because of a fault, in microwave ovens this can be the "crowbar" section of the door safety interlock. A common cause is heavy handed shutting the door, slamming the door can blow the fuse due to bounce in the interlock microswitches which usually degrades the contacts and can cause random fuse blowing from then on.
Because in order to measure voltages in a microwave, you have to defeat the safety interlock, and they're afraid of liability lawsuits.
Cheers! Rich
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.