Digest for sci.electronics.repair@googlegroups.com - 18 updates in 5 topics

N_Cook <diverse@tcp.co.uk>: Oct 06 06:05PM +0100

How do you arrange for a physical letter on a backdrop to a platform
used for a political conference?
It would have to be set in place at least a few days in advance, due to
the security surrounding such a conference, survive a couple of days of
conference speeches from the same rostrum, but the letter must drop off
in the hour of the main closing speech, and not before or after.
"pfjw@aol.com" <pfjw@aol.com>: Oct 06 11:18AM -0700

On Friday, October 6, 2017 at 1:04:59 PM UTC-4, N_Cook wrote:
> the security surrounding such a conference, survive a couple of days of
> conference speeches from the same rostrum, but the letter must drop off
> in the hour of the main closing speech, and not before or after.
 
Short of mechanical intervention, nothing reliable to the extend that you need. At the same time, and depending on your budget, a series of electromagnets on a R/C relay could fill the bill. A signal from the R/C device (even a throw-away cell phone) could de-activate the magnets - possibly even sequentially. Changing TRUMP to RUMP, for instance, then RUM.
 
Peter Wieck
Melrose Park, PA
N_Cook <diverse@tcp.co.uk>: Oct 06 07:32PM +0100


> Short of mechanical intervention, nothing reliable to the extend that you need. At the same time, and depending on your budget, a series of electromagnets on a R/C relay could fill the bill. A signal from the R/C device (even a throw-away cell phone) could de-activate the magnets - possibly even sequentially. Changing TRUMP to RUMP, for instance, then RUM.
 
> Peter Wieck
> Melrose Park, PA
 
There did not seem to be a pack of photographers making a barrage of
flash photos, prior or during the relevant speech.
Even if there was, its not like its the days of magnesium flash powder
and loads of radiant heat around.
Can it be just coincidence, that some glue could fail , in exactly the
right hour, perhaps 150 hours on, from being set-up ?
John-Del <ohger1s@gmail.com>: Oct 06 11:47AM -0700

On Friday, October 6, 2017 at 2:32:31 PM UTC-4, N_Cook wrote:
> and loads of radiant heat around.
> Can it be just coincidence, that some glue could fail , in exactly the
> right hour, perhaps 150 hours on, from being set-up ?
 
 
Use hot glue, then launch a Hellfire missile into the conference. The resultant fireball will melt the hot glue then the letter will drop at the exact time that you want.
 
If you can arrange to talk to former President Obama, tell him that you're an operative of either North Korea or Iran and you can pick up a surplus Hellfire for a small donation to the DNC.
N_Cook <diverse@tcp.co.uk>: Oct 06 07:53PM +0100

I've just thought of a low tec method. It would require the delegates to
have pre-assigned seats in the auditorium, well at least the first few
rows, very likely.
During the setting up, the week before, use week glue for one of the
letters on the lowest row, not so week that it could possibly fail due
to normal temperature changes.
Then a piece of nylon fishing line attached to that letter and fed under
the carpet, and up through a tiny hole under the numbered seat of the
plant, not necessarily under that unfunny "comedian". Reach down , from
a dropped pen and grab the fishing line at some point.
Perhaps someone has acces to a slow-mo version of the coverage of the
"don't mention the f wors to Mrs May" event, to see if the letter very
casually dropped off.
We'd never hear about such a stunt, because it would mean 2 very serious
security lapses in one hour, and having one caught on media cameras is
quite enough.
whit3rd <whit3rd@gmail.com>: Oct 06 01:07PM -0700

On Friday, October 6, 2017 at 10:04:59 AM UTC-7, N_Cook wrote:
> How do you arrange for a physical letter on a backdrop to a platform
> used for a political conference?
 
Suborn the camera operation, and treat the backdrop as a green-screeh.
You just key the image of the letter to overlay, on everyone's video screen,
the backdrop.
 
Instead of moving an object (the letter) you just manipulate the image.
That's what a 'political conference' really is, when it's on-camera: an image.
 
Or, if you want to get really deeply involved, you hire a news crew
and get press credentials and everything.
etpm@whidbey.com: Oct 06 05:11PM -0700

>and loads of radiant heat around.
>Can it be just coincidence, that some glue could fail , in exactly the
>right hour, perhaps 150 hours on, from being set-up ?
 
Of course coincidence is possible. Is there a link to a video you can
post? I dislike posting political stuff on newsnet because I don't
look at any political newsgroups. Buuuut, I will make an exception in
this case. If the letter "T" dropped from the word "Trump" I would
have to say it was just the Universe making a spelling correction.
Actually, that was not a political statement. Donald Trump is an ass.
It wouldn't matter which, if any, political party he claimed to be
aligned with. He is still an ass.
Eric
Steve <invalid@invalid.invalid>: Oct 07 04:46PM +0100

On Fri, 06 Oct 2017 17:11:55 -0700
> It wouldn't matter which, if any, political party he claimed to be
> aligned with. He is still an ass.
> Eric
 
https://www.youtube.com/watch?v=HoRKuxNo6xY
N_Cook <diverse@tcp.co.uk>: Oct 06 05:52PM +0100

On 06/10/2017 14:00, Tim R wrote:
> The neighbor has a Sharp LCD tv, small screen size but rather thick profile, with a cracked screen.
 
> The glass in front isn't cracked but if you turn it on there's a nice pattern of cracks radiating out from what looks like a small impact site.
 
> We're trying to figure out how to dispose of it without paying the recycling fee. It's $25 per unit for electronics here. Would there be any components in it worth salvaging? I dunno, power supply, memory, something like that?
 
The plastic microprism sheet makes an interesting lamp shade, with the
spectrumming effects
"tom" <tmiller11147@verizon.net>: Oct 06 01:11PM -0400

"Foxs Mercantile" <jdangus@att.net> wrote in message
news:or8b0d$9vn$1@gioia.aioe.org...
> Jeff-1.0
> wa6fwi
> http://www.foxsmercantile.com
 
Take it apart and cut it into small pieces and put it out with the trash.
That's why God made the reciprocating cut saw.
tabbypurr@gmail.com: Oct 06 04:34PM -0700

On Friday, 6 October 2017 14:00:36 UTC+1, Tim R wrote:
 
> The neighbor has a Sharp LCD tv, small screen size but rather thick profile, with a cracked screen.
 
> The glass in front isn't cracked but if you turn it on there's a nice pattern of cracks radiating out from what looks like a small impact site.
 
> We're trying to figure out how to dispose of it without paying the recycling fee. It's $25 per unit for electronics here. Would there be any components in it worth salvaging? I dunno, power supply, memory, something like that?
 
Whether stuff is worth salvaging depends on how much you get paid, what you have in stock etc. So there's no way we can know. There are certainly things in it you can make stuff from.
 
 
NT
bruce2bowser@gmail.com: Oct 07 07:40AM -0700

Tim R wrote:
 
> The glass in front isn't cracked but if you turn it on there's a nice pattern of cracks radiating out from what looks like a small impact site.
 
> We're trying to figure out how to dispose of it without paying the
> recycling fee. It's $25 per unit for electronics here.
 
This is the electrical industry. Not the garbage hauling industry. We can forget that, occasionally.
 
Now, I realize that you're trying to be a modest good samaritan, however at some point shouldn't you tell the neighbor that this is a trash transportation and disposal issue. Is their's to deal with. Not your's.
micky <NONONOmisc07@bigfoot.com>: Oct 07 12:36AM -0400

In sci.electronics.repair, on Thu, 05 Oct 2017 20:34:47 -0700, mike
>> volts when the fob is not being used.
 
>Guessing is how you break things.
>What is the trunk release?
 
Yes, a solenoid.
>latch, I'd put a spdt pushbutton
>that powers the solenoid only when pushed and hooks it to the control
>signal when it isn't pushed.
 
I see your point. It's taken me a while to post back because I've been
looking for one big enough electrically. I don't know how much the
solenoid uses, and because everything, lots of things, go through that
control module, I can't judge from the fuse that supplies it. I found
an add-on trunk-release solenoid that it says uses 14 amps, but havent'
found an SPDT switch nearly that big that would look decent on the
dashboard.
 
Maybe I could put some diodes in parallel and use it to block the 12V
from the pushbutton from going to the control module.
 
Of course the module only sends current to the solenoid for a short
time. An add-on alarm I had one time allowed me to change the time from
iirc 1/10th of a second to 4/10ths of a second. Something like that.
 
I suppose the diodes woudl block the reverse current but the intended
current would blow out a set of 8 1-amp diodes if it sends out say 12
amps, even for a split second? I'd have to use 12 or 14 1-amp diodes
-- what a pile -- or find something bigger.
 
>If there's a control module in the back that sits between the T-wire
>and the solenoid, you're gonna need a lot more info.
 
No, the solenoid and control module are at opposite ends of the
T(runk)-wire
mike <ham789@netzero.net>: Oct 07 02:07AM -0700

On 10/6/2017 9:36 PM, micky wrote:
> an add-on trunk-release solenoid that it says uses 14 amps, but havent'
> found an SPDT switch nearly that big that would look decent on the
> dashboard.
 
Measure the resistance of the solenoid and calculate the current.
 
 
> Maybe I could put some diodes in parallel and use it to block the 12V
> from the pushbutton from going to the control module.
Surely you can find a diode big enough to withstand the peak current.
Power would be negligible because of the short duration.
There are a couple of potential problems.
The inductive spike when the switch opens may put a lot of back
voltage on the series diode. Don't use a low voltage diode.
Or put a reverse diode across the solenoid to clamp the negative spike.
The other thing is whether the control module is smart and decides
to set an error condition when it can't sense the solenoid. Check that
before you go drilling holes in the dash.
>> and the solenoid, you're gonna need a lot more info.
 
> No, the solenoid and control module are at opposite ends of the
> T(runk)-wire
 
Famous last words. You're assuming the designer thinks like you.
VERIFY that there's not something else unknown at either end.
 
I once set a $2000 (1993 dollars) laptop on fire because I made
assumptions that the designers had used common sense in the design
of the battery charging system.
micky <NONONOmisc07@bigfoot.com>: Oct 07 10:01AM -0400

In sci.electronics.repair, on Sat, 07 Oct 2017 02:07:14 -0700, mike
>> found an SPDT switch nearly that big that would look decent on the
>> dashboard.
 
>Measure the resistance of the solenoid and calculate the current.
 
Ah, of course. In my defense, I can't see the wires without taking the
interior or the trunk interior apart, and so I was hoping to take the
thing apart and put it back together the same day. With the previous
car, I took it apart and because of several problems doing what I
intended, didn't get around to reassembling it for 3 years, by which
time I forgot which screw went where. It is my biggest repair failure of
my life.
 
And toyota has it set up, just so one won't see a screw head, that to
get to one cover, he has to take off the next, and the next beyond that,
and the next.
 
>> Maybe I could put some diodes in parallel and use it to block the 12V
>> from the pushbutton from going to the control module.
 
>Surely you can find a diode big enough to withstand the peak current.
 
Okay, good.
 
Oh, my gosh, the only real electronics store in Baltimore is closing:
http://www.baltimoresun.com/news/maryland/baltimore-county/towson/ph-tt-baynesville-electronics-closing-1012-20161011-story.html
"As sales dip, Towson electronics store pulls the plug". Oh, the
article is one year old this week.
 
"Paul Smith started to notice lagging sales in 2008 at Baynesville
Electronics, the store his grandparents first opened in their Joppa Road
home, near the intersection with Loch Raven Boulevard, in 1955.
 
Hoping that this was an anomaly rather than a trend, he hoped that the
business, which eventually expanded to 6,600 square feet, in a new
building at the same site, would right itself.
 
However, on Oct. 3, Smith, the president of the corporation that owns
the store and the 1-acre lot on which it stands, and his fellow owners,
announced that the store is closing for good.
 
While there is no official closing date, the once-popular purveyor of
electronic components and gadgets will lock its doors for the final time
after its inventory is sold, probably sometime in November, Smith
said.... We sell mainly component parts [used to repair computers and
other electronic devices], but people don't fix things anymore. We've
become a disposable society."
 
...."We made a conscience decision not to sell [products] online," [Yes,
it would have been nice if they'd had an online catalog, even if I had
to go there to buy things, but adding all their many items would have
been a big chore.] Smith said. "Our business is based on personal
customer service. We sell people actually what they are looking for. But
we just haven't had enough sales to pay for our inventory. Plus, there
are taxes and other rising costs to pay."
 
...."We had a grown man cry right here in front of me at the store," he
said. "He said he couldn't believe that we're closing. I had no idea
that we had that kind of impact on so many people. I heard that it was
announced by the local police at one of their briefings. We've had
hundreds of people calling to ask if it's true. To them, it's almost
like a death in the family."
 
..."From day one, after I moved here from Chicago [in 1993] I was told
that this is the place to go," the audio engineer from Timonium said.
"It's the only place to get some of this stuff, like grill speaker cloth
from the 60s. And some of the stuff I've gotten here, I know it's more
expensive than getting it on the Internet. But these guys talk to you,
give you tips, kind of like a local hardware store. Some of the things I
could get from the big-box stores, but I like the customer service here.
It's a lost art."
 
Rare are the times that customer Fred Gelhaus, 86, has gone to the store
and been unable to find what he wanted, he said — until his most recent
visit on Oct. 8.
 
"I've been coming here since it opened," he added.
 
..."They have service you can't beat," he said. "They are helpful,
knowledgeable and courteous. We'll miss them."
 
Cub Hill resident Bob Ernst, 74, a longtime buyer for Baynesville
Electronics, said that the Smith family always treated their employees
well.
 
"They treated me like one of their own," he said. "I never missed a
paycheck in 52 years."
 
Like workers in other businesses, however, employee health benefits were
taken away five years ago and no raises were given for even longer than
that, Ernst said.
 
Paul Smith's uncle, Richard Smith, 64, said that changes in the industry
began pecking away at profits in an incremental fashion.
 
"We went from tubes to transistors to integrated circuits to circuit
boards," he said, describing long lines of customers who would line up
inside the store to test radio and television tubes back in the store's
earlier days.
 
...Oddly enough, when local Radio Shack outlets closed, it also hurt
Baynesville's business, Ernst said.
 
"People thought that Radio Shack's closing was going to be good for us,"
he said. "And it was for a short time, but we lost a lot of business
referrals when they left."
 
Richard Smith said that the company's gross sales peaked at $1.7 million
in the late 1980s or early 1990s before falling to $800,000 last year.
 
"I used to ride my bike up here as a kid to get batteries," said Tom
Lortz, 61, who grew up in Loch Raven Village and now lives in Havre de
Grace, after purchasing headphone extension cables at the store on
Tuesday. "It's sad and depressing. Now I don't know where else to go to
get some of the things I'd get here. I feel bad for the employees, too.
I know most of them have been here a very long time.""
 
Their prices were very high, imo, but every 3 years or so, I used to buy
belts for my car's cassette player (they had a big selection) and I
bought a meter there once and lots of little things. Plus I liked
browsing. Darn.
 
Now I think there is no place to buy the diode but mail-order. In an
emergency, I suppose I could drive to Philadelphia. Maybe there's a
store there.
 
>The other thing is whether the control module is smart and decides
>to set an error condition when it can't sense the solenoid. Check that
>before you go drilling holes in the dash.
 
Good point!
 
>> T(runk)-wire
 
>Famous last words. You're assuming the designer thinks like you.
>VERIFY that there's not something else unknown at either end.
 
I've verified that already. I have the wiring manual. (I would buy the
other manuals but no one had them for sale. I'll look again in a few
weeks.)
 
hamza.ansar50@gmail.com: Oct 06 02:43PM -0700

> Solution Manual and Test bank Absolute Java (6th Ed., Walter Savitch)
> Solution Manual The Art and Science of Java (Eric Roberts)
> Solution Manual Buildi...
 
i need solutios of electric principle book by malvino 8th edition
micky <NONONOmisc07@bigfoot.com>: Oct 06 12:44PM -0400

In sci.electronics.repair, on Fri, 6 Oct 2017 08:03:31 +0100, Andy Burns
 
>> I dont' expect that.
 
>> http://www.ebay.com/itm/Car-USB-Aux-in-Adapter-MP3-Player-Radio-Interface-For-RAV4-Yaris-Tundra-Lexus/251421552323?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
 
>The description implies the device *is* an MP3 player, just insert a
 
Well, I hope so. It still hasn't come yet, but I have everything else I
need, including a thing the size of a cigarette lighter socket that
panel-mounts and has a 3.5mm jack and a USB jack. It'll go in a box in
the dash in front of the shifter. They sell one that has only the
3.5mm, but I'd already ordered this one before the problem occurred to
me.
 
>memory stick containing MP3 files into the USB socket, with track
>selection controlled by the buttons on the radio that would normalluy
>operate e.g. a CD multi-changer.
 
That would be great. It's supposed to come within a week now and I
intend to let your and everyone here know
micky <NONONOmisc07@bigfoot.com>: Oct 06 01:56PM -0400

In sci.electronics.repair, on Fri, 6 Oct 2017 15:45:52 +0100, Mike Coon
>> there?
 
>I was referring to playing CDs with a CD player. I thought that was
>*part* of the scenario, but rather lost the context.
 
Right.
>can each cope with a repertoire of them. VLC, in particular, plays *.ts
>files that my digital TV set-top box records, after I've copied them to
>my PC; both audio and video!
 
I"m reading the help-file for VLC right now. It looks like it will
create a .cda file from an .mp3 file, but so far I don't know how to
make more than one at a time. I'll figure it out.
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