Digest for sci.electronics.repair@googlegroups.com - 7 updates in 5 topics

oldschool@tubes.com: Apr 24 06:55PM -0400

On Tue, 25 Apr 2017 00:21:17 +0100, "Gareth Magennis"
 
>Short the XLR Low to the Ground, pin 1. The RCA ground goes to this
>shorted pair. The RCA pin goes to High.
 
>Gareth.
 
Great, thank you!!!
Fred McKenzie <fmmck@aol.com>: Apr 25 12:40PM -0400

In article <cgtsfc1s1jiaodngnao4ftdoui749fg989@4ax.com>,
 
> I suppose I could just use the trial and error method without harming
> anything, but I thought I'd just ask and do it right.
 
> Thanks
 
Gareth's suggestion will probably work OK. If you experience any
problem with hum or distortion, look for an adapter to convert between
XLR's low impedance and your single-ended high impedance.
 
A family of such adapters is Shure's A95 series "Line Matching
Transformers". The A95A or A95F may meet your needs, depending on the
gender of your XLR connector.
 
Reference <http://www.coutant.org/matching/a95.pdf>
 
Fred
oldschool@tubes.com: Apr 24 06:52PM -0400

>No charge.
>Thanks,
>Eric
 
We can blame the government for a lot of these problems. Here is why.
There was a private company that used to take in used electronics,
particularly computers. The tested everything that came in, and would
fix stuff that was easily repairable. They had a store, where anyone
could buy an entire computer system for $20 to $50, they wiped and sold
all the hardrrives that worked, sold mice, keyboards, computer boards,
RAM, power supplies, modems, and you name it. They sold old vintage
radios and even some old test equipment and sometimes some electric
motors and other stuff like that.
 
The idiot state government shut them down, so they could make a lot of
money by charging everyone $20 or more (per piece) to get rid of
electronic waste. A TV costs $20. A computer is (I think) the same, and
if that computer includes a monitor and printer, that's 3 items, or $60.
 
All the stuff that was being recycled and re-sold in that store is now
going to the landfill. What a damn waste. I used to love going to that
store, and shopping for cheap electronic stuff. And if something failed
within 2 weeks it could be returned and exchanged for something similar.
 
Heck, when they were forced to shut down, I bought the stuff by the box.
Like a whole box of harddrives for $20, and a shoe box size of RAM for
$10, and so on. I still have 20lbs or so of all the small screws and
nuts they had collected from computers. That's been real handy to have.
 
What we have now, are tv sets. computers and whatever else being tossed
in the ditches along rural roads, because people dont want to pay the
disposal fee. The same is true for tires.
 
It's a dirty shame. That company was not only profitable, fun to shop
at, but it employed 20 or 30 disabled people, who took that stuff apart,
tested the parts, and ran the store. It's been about 10 years since the
damn state ruined that business and got greedy.
 
I dont know which plastics contain chlorinated materials, but I can
guess PVC is one of them (from the name).
 
We do not have any garbage pickup here, but for a huge price, I could
hire a private company. So, I have little choice but to burn paper and
plastics. But I do recycle all metals. On the rare occasion I have to
dispose of a CRT, I smash it in a box, and toss it in a dumpster at some
local business. I really do not know what else I can do.
 
One thing I do have to say, is that it's time they stop manufacturing
harmful plastics. Yea, I know PVC is useful for plumbing, but what about
all the packaging. Everything we buy is packed in plastic waste. I am
also the first person to complain when I go to a store, but one item and
the idiot clerk puts it into a plastic bag. One local store, the
employees are required to ask "Do you want a bag?". Unless I really need
a bag, I always say "NO". Then some of the idiot clerks put my stuff in
a bag right after I said "NO". That's when I tend to get a little rude
and say "I just told you NO BAG, remove it from the bag"....
 
In my opinion, all the EPA is good for, is to take money away from
private people, in the name of environment protection. If they were
doing any good, they would attack the producers of all the harmful
packaging and work to find safe alternatives.
"pfjw@aol.com" <pfjw@aol.com>: Apr 25 05:29AM -0700

This sort of back-and-forth it typically between those who *do* remember when rivers ran orange, caught on fire, or actually gelled, when entire hillsides downwind from smelters were dead - and those who do not.
 
I have lived on/around three major rivers (Hudson, Susquahanna & Delaware) and our summer house is on a large creek. All three of the majors were open sewers not so very long ago, all three of them now are reasonably clean and produce edible fish. Our summer house creek narrowly (very narrowly) avoided mine-runoff pollution (a total 'killer') in the mid 1990s. All due, specifically, to the efforts of the EPA, and its state brethren. The present incumbent in the White House just lifted the runoff regulations that saved our creek - happily the mining that would have caused it is now gone and the mine is a tourist attraction (and making more money by this than as a mine). But, those in West Virginia may not realize the same outcome.
 
It really does not take much. A single incident of run-off will destroy a living stream for 50 or more years.
 
Burning trash: Not a good idea. Sure, cardboard for kindling, perhaps. But food trash - not in bear country. Plastics - the amount of poison spread out in the ash and smoke is stunning - but your neighbor is the one stunned, as I am sure you burn on the edge of your property so the smoke goes elsewhere.
 
And so on and so forth.
 
Peter Wieck
Melrose Park, PA
amdx <nojunk@knology.net>: Apr 25 06:55AM -0500


> Suggest circuits for linking an analog amp gauge to the output of a 200 amp auto
 
> alternator for measuring output under load. ? links ? commercial units ?
 
Here's what you need, It is a shunt that you put in series with the
output of your alternator. You then can run small diameter wires to the
meter in the dash. They carry very little current.
> https://www.bluesea.com/products/8019
$113.00
This page has a schematic, it is wired to measure battery current, you
need to put the shunt were it will measure alternator current.
See the last page.
> http://assets.bluesea.com/files/resources/instructions/9322.pdf
 
Here is a shunt for $16.00
> http://www.allelectronics.com/item/snt-200/200-amp-shunt-50mv-200-amps/1.html
 
Here's the meter that will work with it.
 
> http://www.allelectronics.com/item/pmd-200a/200-amp-dc-panel-meter/1.html
 
 
 
Mikek
 
 
 
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"J.B. Wood" <arl_123234@hotmail.com>: Apr 25 07:04AM -0400

On 04/21/2017 06:22 PM, Bennett wrote:
 
> different types of caustic potash electrolyte. Presumably, I guess,
> Panasonic uses these 2 different electrolytes but doesn't add W or SW to
> its labels.
 
Hello, and thanks much for responding. Does your spec sheet indicate
that the chemistry of the #303 is silver oxide or something else?
Thanks for your time. Sincerely,
--
J. B. Wood e-mail: arl_123234@hotmail.com
George Fields <gf@mail.com>: Apr 25 03:06AM -0400

On 04/23/2017 10:00 AM, Sjouke Burry wrote:
> Thats all I can see in my magic globe.
> Something about your computer and phone might have been useful for
> a better answer.
The phone is an Android 5.0.1. The computer runs Linux mint and Knoppix.
 
It must have been a hardware problem. Yesterday the hard drives stopped
working, memory was showing wrong on how much is in computer, the
processor was showing way off from what it actually is.
 
After taking the computer completely apart, cleaning and re-installing
all the hardware, data transfer between phone and computer works like a
charm.
 
Thanks to all for your help.
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