sci.electronics.repair - 25 new messages in 8 topics - digest

sci.electronics.repair
http://groups.google.com/group/sci.electronics.repair?hl=en

sci.electronics.repair@googlegroups.com

Today's topics:

==============================================================================
TOPIC: how to remove alkaline battery residue
http://groups.google.com/group/sci.electronics.repair/t/714a9d09282224a3?hl=en
==============================================================================

== 1 of 5 ==
Date: Sat, Aug 28 2010 10:12 pm
From: "Jerry G."

I use plain water and scrub the surfaces. After, I rub in some contact
cleaner if there are contacts involved.

Jerry G.

On Aug 28, 2:39 pm, "Geoffrey S. Mendelson" <g...@mendelson.com>
wrote:
> Between the combination of the hotest day in many years and really bad batch
> of alkaline batteries, I have several devices with a crystaline residue from
> the batteries leaking.
>
> Besides brushing with a succession of stiffer brushes, is there some chemical
> that can safely remove it? It's all on metal contacts in plastic, but some are
> surrounded by anodized aluminium.
>
> Thanks in advance,
>
> Geoff.
>
> --
> Geoffrey S. Mendelson N3OWJ/4X1GM
> To help restaurants, as part of the "stimulus package", everyone must order
> dessert. As part of the socialized health plan, you are forbidden to eat it. :-)

== 2 of 5 ==
Date: Sun, Aug 29 2010 3:24 am
From: "Geoffrey S. Mendelson"

Jeff Liebermann wrote:

> Teaching them to read Hewbrew would be too expensive? Instead you
> get a nation of dirty toilets. I would think that sacrificing a few
> immigrants so that the rest could have clean toilets would be a
> suitable exchange. I guess international safety symbols won't work
> when mixing to non-toxic products. Maybe a toilet with a nuclear
> mushroom cloud coming out of the bowl might work.

Teaching them Hebrew is a national industry for the last 15 years the cost
of abosrbing new immigrants has exceeded the defense budget. Schools of
Hebrew are called "ulpan". There are ulpan for free, subsidized uplan, private
ulpan, people giving uplan lessons in their home, an Ulpan High School, and
the "Wall Street Institute" an ulpan which teaches English to Hebrew speakers,
plus Berlitz and other international schools of language.

The problem is how do make the point to someone before they learn Hebrew.

We don't have dirty toilets BTW, there are lots of other cleaners, including
"mai cham" (literally hot water), which is a dilute muratic acid solution.
The most common is "economica", which is a brand name that has become a
generic term for cholrine bleach with soap and optional lemon scent.

I was here for five years before I found out you can buy plain bleach with
no soap or lemon in it, and most immigants never learn that.

I like the mushroom cloud idea, but I'm not sure everyone would recognize it.
It's become a cultural icon in the west, but I'm not sure about rural China,
India, or Africa.

We also get most of our batteries from Singapore and mainlaind China, often
sold as well known "American" brands. The particularly bad ones were Office
Depot house brand, made in Hong Kong, but some were Duracell or Energizer
brand, made in various western European countries (or at least claimed to be).
:-)

Geoff.

--
Geoffrey S. Mendelson N3OWJ/4X1GM
To help restaurants, as part of the "stimulus package", everyone must order
dessert. As part of the socialized health plan, you are forbidden to eat it. :-)

== 3 of 5 ==
Date: Sun, Aug 29 2010 9:39 am
From: "William Sommerwerck"

> We don't have dirty toilets BTW, there are lots of other
> cleaners, including "mai cham" (literally hot water), which
> is a dilute muriatic acid solution.

I use Sno Bol, a hydrochloric acid solution. I cuts right through the
schmutz, something chlorine+determent products cannot do.

== 4 of 5 ==
Date: Sun, Aug 29 2010 1:05 pm
From: "ian field"

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in message
news:i5e2hg$cbe$1@news.eternal-september.org...
>> We don't have dirty toilets BTW, there are lots of other
>> cleaners, including "mai cham" (literally hot water), which
>> is a dilute muriatic acid solution.
>
> I use Sno Bol, a hydrochloric acid solution. I cuts right through the
> schmutz, something chlorine+determent products cannot do.
>

A while back Harpic released an acid based bog cleaner that they claim to be
best on the market for shifting limescal, I've found if the limescale is
stained at all it takes an awfull lot of bog cleaner to shift it - whiten
the limescale with bleach first.
>
>

== 5 of 5 ==
Date: Sun, Aug 29 2010 1:08 pm
From: "William Sommerwerck"

>> I use Sno Bol, a hydrochloric acid solution. I cuts right
>> through the schmutz, something chlorine+determent
>> products cannot do.

When I say "schmutz", I mean hardened fecal schmutz.

> A while back Harpic released an acid based bog cleaner
> that they claim to be best on the market for shifting limescale,
> I've found if the limescale is stained at all it takes an awful lot
> of bog cleaner to shift it -- whiten the limescale with bleach first.

There's an American product called CLR (calcium-lime-rust) specifically for
such stuff.

==============================================================================
TOPIC: Roost Session Master , 1976
http://groups.google.com/group/sci.electronics.repair/t/07d36398c8b10125?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Aug 29 2010 5:23 am
From: "N_Cook"

useful stuff here
http://www.roostamps.co.uk/roostschematics.html
Owner switched off amp when he saw one of the bottles melting , leaving a
deep dimple over the anode but not punctured. Its matching polarity one had
starting to do the same. (Reminder to myself , leave some slack in axial
leaded components, regimented stuff looks fine but this is the practical
downside). 100K bias supply resistor lead had snapped because tightly
joined to 10K phenolic preset wiper, itself mounted on turret tag strip, not
sheet, so plenty of scope to bend with humidity/temp/vib.
At the moment trying to find from the owner what the sequence of distortions
were before final meltdown. As one of the double pack HT electrolytic cans
(for the preamp) is kaput and the reverb transformer seems also kaput.
I would expect .5 to 1R // 1k to 2K but this measured DC and AC R and L , is
0.2R // open, I can never be that sure with high L. Reverb tank disconnected
measures 0.8R and 165R. I'm fine with restuffing can electros ,Main HT
seriesed electros seem ok, and cannot see how loss of bias would blow preamp
stuff. Unwinding/Rewinding small reverb tr will be something different.
The output matching transformer is 27R/27R ie the same , does that mean
bifilar? seems unusual

==============================================================================
TOPIC: Dolphin underwater scooter
http://groups.google.com/group/sci.electronics.repair/t/34462f9ac7df89c3?hl=en
==============================================================================

== 1 of 2 ==
Date: Sun, Aug 29 2010 5:41 am
From: Bob Villa

On Aug 28, 8:57 am, "N_Cook" <dive...@tcp.co.uk> wrote:
> 12V powered propellor SCUBA assistance.
> Only 2 on/off sw functions , both reed relay+ external magnets work fine.
> Why so much electonics for isolator function sw and motor on and off sw, no
> speed control on this one? Assuming it monitors motor overload, what else ?
> brown out ?
> Uses 2x ST P60NF0?? TO220 size powerfets and ST maybe LM324N 4x TO92 all
> unclear under scraped off conformal. A 4mm wide track with central solder
> thickening overlay, has fused, in a run of uniform (not deliberately necked)
> track, not at a component. Looks as though the trace has heated to point of
> melting solder and the underlying copper has split apart by contraction
> leaving a neat 1mm gap rather than burning up, copper is still bright
> copper. Is this another failing of PbF ? no reported motor stalling from
> weed etc , what sort of current would cause this failure?, power devices etc
> seem ok as far as no shorts and no other hot spots . Normal in-service
> running current and some PbF metalurgical failure ?

Can you check with the company (maybe online) that designed the
board? Maybe this was an older board rev. and was redesigned.

== 2 of 2 ==
Date: Sun, Aug 29 2010 8:27 am
From: "N_Cook"

Bob Villa <pheeh.zero@gmail.com> wrote in message
news:8de66d34-2bf3-4e58-81c9-99e02e86e152@i13g2000yqd.googlegroups.com...
On Aug 28, 8:57 am, "N_Cook" <dive...@tcp.co.uk> wrote:
> 12V powered propellor SCUBA assistance.
> Only 2 on/off sw functions , both reed relay+ external magnets work fine.
> Why so much electonics for isolator function sw and motor on and off sw,
no
> speed control on this one? Assuming it monitors motor overload, what else
?
> brown out ?
> Uses 2x ST P60NF0?? TO220 size powerfets and ST maybe LM324N 4x TO92 all
> unclear under scraped off conformal. A 4mm wide track with central solder
> thickening overlay, has fused, in a run of uniform (not deliberately
necked)
> track, not at a component. Looks as though the trace has heated to point
of
> melting solder and the underlying copper has split apart by contraction
> leaving a neat 1mm gap rather than burning up, copper is still bright
> copper. Is this another failing of PbF ? no reported motor stalling from
> weed etc , what sort of current would cause this failure?, power devices
etc
> seem ok as far as no shorts and no other hot spots . Normal in-service
> running current and some PbF metalurgical failure ?

Can you check with the company (maybe online) that designed the
board? Maybe this was an older board rev. and was redesigned.

vvvvvvvvvvvvvvvv

12v/7.5 Ah Battery
Product Description
Run time of up to 1.5 hours with normal use
so 5 amps in normal use, so 4mm track without solder should do that

==============================================================================
TOPIC: Best solder free electrical connection
http://groups.google.com/group/sci.electronics.repair/t/11e5e6461418f740?hl=en
==============================================================================

== 1 of 10 ==
Date: Sun, Aug 29 2010 6:10 am
From: geoff

In message <i4p04n$sde$1@news.eternal-september.org>, Dave
<davenpat@btopenworld.com> writes
>On 21/08/2010 03:59, Michael A. Terrell wrote:
>>
>> geoff wrote:
>
>> That's a very good example of why most people with brains left Europe
>> for 'The new World'.
>
>So how come Britain made a better nuclear bomb than the New World?

Don't forget the jet engine

>And the New World wanted as much detail of our superior technology as
>they could get?
>

--
geoff

== 2 of 10 ==
Date: Sun, Aug 29 2010 6:05 am
From: geoff

In message <gqKdnQuO_L3pIunRnZ2dnUVZ_vudnZ2d@earthlink.com>, Michael A.
Terrell <mike.terrell@earthlink.net> writes
>> 10 years later, I tried to join again. I went to through the testing,
>> they wanted me so I went for the medical exam where I was told to bend
>> over. Well, the doctor looked up my backside and told me I was in
>> perfect health but I was too nearsighted. I was deemed permanently
>> disqualified. Hell, I tried, which is more than most damn hippie freaks
>> did.
>
>
> My vision was below 20/200 and 20/400 without my glasses when they
>took me.

Do you think that they made a short-sighted decision then ?

--
geoff

== 3 of 10 ==
Date: Sun, Aug 29 2010 6:23 am
From: geoff

In message <GIednWu1m4SwUe_RnZ2dnUVZ_rSdnZ2d@earthlink.com>, Michael A.
Terrell <mike.terrell@earthlink.net> writes
>> >> >>>> What other supersonic airliners are those then?...
>> >> >>>
>> >> >>> Don't read well, do you? The 747 kicked its butt.
>> >> >>
>> >> >>The 747 goes about 600 mph top whack.
>> >> >>Supersonic means greater than 768 mph so the 747 ain't a supersonic
>> >> >>airliner.
>> >> >
>> >> >I guess that answered my question (you don't read well).
>> >> >
>> >> >The Concorde was not successful.
>> >>
>> >> It was .. for what it did...
>> >
>> >
>> > Well under a fraction of one percent isn't sucessful. It's nothing
>> >but ego bloat.
>>
>> Built here anyone;?..
>
>
> How's your space agency doing? How do they like the US built
>communications systems that i built?

All by yourself, big boi ?

or was that just the solder joints ?

--
geoff

== 4 of 10 ==
Date: Sun, Aug 29 2010 11:07 am
From: geoff

In message <40j376ljgj96q0brsbaofkk2dfkubc76gc@4ax.com>,
clare@snyder.on.ca writes
>On Sun, 22 Aug 2010 18:13:58 +0100, ><(((°> <nospam@butfish.com>
>wrote:
>
>>On Sun, 22 Aug 2010 16:45:08 +0100, krw@att.bizzzzzzzzzzzz
>><krw@att.bizzzzzzzzzzzz> wrote:
>>
>>> On Sun, 22 Aug 2010 12:01:04 +0100, tony sayer <tony@bancom.co.uk> wrote:
>>>
>>>> In article <-NmdnY7Fjv0c5e3RnZ2dnUVZ_sidnZ2d@earthlink.com>, Michael A.
>>>> Terrell <mike.terrell@earthlink.net> scribeth thus
>>>>>
>>>>>> <(((°> wrote:
>>>>>>
>>>>>> On Sat, 21 Aug 2010 22:26:53 +0100, <clare@snyder.on.ca> wrote:
>>>>>>
>>>>>> > On Sat, 21 Aug 2010 14:46:34 -0400, "Michael A. Terrell"
>>>>>> > <mike.terrell@earthlink.net> wrote:
>>>>>> >
>>>>>> >>
>>>>>> >> Dave wrote:
>>>>>> >>>
>>>>>> >>> On 21/08/2010 03:59, Michael A. Terrell wrote:
>>>>>> >>> >
>>>>>> >>> > geoff wrote:
>>>>>> >>>
>>>>>> >>> > That's a very good example of why most people with brains
>>>>>> left
>>>>>> >>> Europe
>>>>>> >>> > for 'The new World'.
>>>>>> >>>
>>>>>> >>> So how come Britain made a better nuclear bomb than the New
>>>>>> World? And
>>>>>> >>> the New World wanted as much detail of our superior technology as
>>>>>> they
>>>>>> >>> could get?
>>>>>> >>
>>>>>> >>
>>>>>> >> What superior technology? Lucas?
>>>>>> > No "superior technology" has come out of GB since about 1950. - and
>>>>>> > that may be stretchng it. There have been a few "good ideas" since
>>>>>>
>>>>>> I might be wrong but I thought Concorde started flying after 1950.
>>>>>> Though then again the Septics didn't like the noise, or was it a
>>>>>> classic
>>>>>> case of "Not Invented Here" syndrome?
>>>>>
>>>>>
>>>>> It was a fast plane, but a poor design.
>>>>
>>>> Not that bad really as it was the first one..
>>>>
>>>>> They spent wads of money to
>>>>> build and maintain them, then junked the entire fleet. It was noisy
>>>>> and
>>>>> very fuel inefficient. That forced the fares so high that they weren't
>>>>> able to compete with better planes from multiple countries.
>>>>
>>>> What other supersonic airliners are those then?...
>>>
>>> Don't read well, do you? The 747 kicked its butt.
>>
>>The 747 goes about 600 mph top whack.
>>Supersonic means greater than 768 mph so the 747 ain't a supersonic
>>airliner.
>>
>>You might have a military plane faster but you haven't got a passenger
>>airliner faster.
> The 747 (on a bad day) moves more passenger-miles per hour on less
>than 1/4 the lbs of fuel per passenger mile than the concorde could
>dream of on it's best day

You could say more or less the same comparing a ford fiesta and a rolls
royce

--
geoff

== 5 of 10 ==
Date: Sun, Aug 29 2010 11:13 am
From: geoff

In message <rKCdnZjUmopEJ-zRnZ2dnUVZ_jidnZ2d@earthlink.com>, Michael A.
Terrell <mike.terrell@earthlink.net> writes
>
>><(((°> wrote:
>>
>> On Sun, 22 Aug 2010 20:57:06 +0100, Phil Hobbs
>> <pcdhSpamMeSenseless@electrooptical.net> wrote:
>>
>> > aemeijers wrote:
>> >> krw@att.bizzzzzzzzzzzz wrote:
>> >> (snip)
>> >>>>> They spent wads of money to
>> >>>>> build and maintain them, then junked the entire fleet. It was noisy
>> >>>>> and
>> >>>>> very fuel inefficient. That forced the fares so high that they
>> >>>>> weren't
>> >>>>> able to compete with better planes from multiple countries.
>> >>>> What other supersonic airliners are those then?...
>> >>>
>> >>> Don't read well, do you? The 747 kicked its butt.
>> >> 747 ain't supersonic. But on a dollar/gallon per passenger mile
>> >> basis, it is a whole lot cheaper to run, when anywhere near fully
>> >> loaded. In recent years, due to passenger volume being so reduced, a
>> >> whole lotta 747s and other jumbos were parked in the desert, in
>> >> 'preservation pack' status. Airlines switched to the itty-bitty jets
>> >> for many routes. Now that volume is picking up again, some jumbos are
>> >> being brought back out of storage. At one point, they were gonna
>> >> modernize the 747 fleet, but it will probably never happen, because
>> >> Boeing would rather sell new planes, and Airbus is nipping at their
>> >> heels. But the long delays in the Boeing Dreamliner rampup can be at
>> >> least partially blamed on the airlines getting gun-shy. It costs a lot
>> >> of money to keep airplanes with a lot of lifespan left sitting in the
>> >> desert. Another air disaster or major fuel cost spike, and there will
>> >> be multiple airlines going belly-up.
>> >> Supersonics only made sense for civilian use for a very tiny niche
>> >> market of rich people and businessmen who had to have face time
>> >> someplace far away in a hurry. That niche market got even smaller with
>> >> the rise of cheap easily available hi-rez video-conferencing services.
>> >> A lot of execs don't travel near as much as they used to. Plus, of
>> >> course, with the general economic downturn, there are a lot fewer
>> >> executives. Either retired or flipping burgers for somebody else.
>> >> Absent some technological leap that allows cheap suborbital flights
>> >> for the masses, world travel will be slower and more expensive from
>> >> here on out.
>> >>
>> >
>> > Plus the externalities, such as having your windows rattle twice a day
>> > (waking the baby, of course) just because some rich nitwit couldn't wait
>> > another couple of hours to get to LA. Anyway, rich nitwits save more
>> > time than that by buying or renting their own subsonic jet, which goes
>> > wherever they want, whenever they want. It's a far more rational
>> > solution (if you can call it that).
>> >
>> > There was also a big outcry at the time about the pollution--apparently
>> > folks were worried about damage to the ozone layer or something, due to
>> > inefficient engines spewing crap in the stratosphere. I'm not sure
>> > whether there was anything to that (there so often isn't, in the
>> > environmentalist cosmos), but that and the sonic booms were what got
>> > supersonic flight banned.
>> >
>> > Cheers
>> >
>> > Phil Hobbs
>> >
>>
>> Just more symptoms on Not Invented Here syndrome.
>
>
> Yawn. US SS military jets were banned from populated areas long
>before the first Concord was pieced together from British and french
>landfills.

Because falling out of the sky and killing people is not a vote winner

--
geoff

== 6 of 10 ==
Date: Sun, Aug 29 2010 11:23 am
From: geoff

In message <Xo-dnWGvo8lhaOnRnZ2dnUVZ_gGdnZ2d@earthlink.com>, Michael A.
Terrell <mike.terrell@earthlink.net> writes
>
>tony sayer wrote:
>>
>> >> >> > There was also a big outcry at the time about the
>> >> >> >pollution--apparently
>> >> >> > folks were worried about damage to the ozone layer or
>> >> >> >something, due to
>> >> >> > inefficient engines spewing crap in the stratosphere. I'm not sure
>> >> >> > whether there was anything to that (there so often isn't, in the
>> >> >> > environmentalist cosmos), but that and the sonic booms were what got
>> >> >> > supersonic flight banned.
>> >> >> >
>> >> >> > Cheers
>> >> >> >
>> >> >> > Phil Hobbs
>> >> >> >
>> >> >>
>> >> >> Just more symptoms on Not Invented Here syndrome.
>> >> >
>> >> >
>> >> > Yawn. US SS military jets were banned from populated areas long
>> >> >before the first Concord was pieced together from British and french
>> >> >landfills.
>> >>
>> >> Yawn ... zzzzzz Frank Writtle was 'working on them long before that;)...
>> >
>> >
>> > So, where are his flying, today?
>>
>> Well thats like saying where are Stevenson's locomotives working today
>> then;?.
>>
>> Rather pointless...
>
>
> Yes, you are. Yet you keep trolling.

Do you even know who Sir Frank Whittle was ?

(without sneaking off and looking it up in google, of course)

--
geoff

== 7 of 10 ==
Date: Sun, Aug 29 2010 11:53 am
From: geoff

In message <i4spnd$11ja$1@adenine.netfront.net>, tm
<the_obamunist@whitehouse.gov> writes
>
>"Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message
>news:4C71E40A.4090304@electrooptical.net...
>> Phil Hobbs
>> (Former Triumph owner)
>>
>
>Cool. Still have mine. '66 Bonnie.
>
'60 Enfield that DOESN'T leak

--
geoff

== 8 of 10 ==
Date: Sun, Aug 29 2010 12:51 pm
From: "tm"

"geoff" <troll@uk-diy.org> wrote in message
news:OJLG2NagyqeMFwbA@demon.co.uk...
> In message <i4spnd$11ja$1@adenine.netfront.net>, tm
> <the_obamunist@whitehouse.gov> writes
>>
>>"Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message
>>news:4C71E40A.4090304@electrooptical.net...
>>> Phil Hobbs
>>> (Former Triumph owner)
>>>
>>
>>Cool. Still have mine. '66 Bonnie.
>>
> '60 Enfield that DOESN'T leak
>

What, you didn't put any oil in it? :)

--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

== 9 of 10 ==
Date: Sun, Aug 29 2010 2:07 pm
From: "krw@att.bizzzzzzzzzzzz"

On Sun, 29 Aug 2010 19:07:07 +0100, geoff <troll@uk-diy.org> wrote:

>In message <40j376ljgj96q0brsbaofkk2dfkubc76gc@4ax.com>,
>clare@snyder.on.ca writes
>>On Sun, 22 Aug 2010 18:13:58 +0100, ><(((°> <nospam@butfish.com>
>>wrote:
>>
>>>On Sun, 22 Aug 2010 16:45:08 +0100, krw@att.bizzzzzzzzzzzz
>>><krw@att.bizzzzzzzzzzzz> wrote:
>>>
>>>> On Sun, 22 Aug 2010 12:01:04 +0100, tony sayer <tony@bancom.co.uk> wrote:
>>>>
>>>>> In article <-NmdnY7Fjv0c5e3RnZ2dnUVZ_sidnZ2d@earthlink.com>, Michael A.
>>>>> Terrell <mike.terrell@earthlink.net> scribeth thus
>>>>>>
>>>>>>> <(((°> wrote:
>>>>>>>
>>>>>>> On Sat, 21 Aug 2010 22:26:53 +0100, <clare@snyder.on.ca> wrote:
>>>>>>>
>>>>>>> > On Sat, 21 Aug 2010 14:46:34 -0400, "Michael A. Terrell"
>>>>>>> > <mike.terrell@earthlink.net> wrote:
>>>>>>> >
>>>>>>> >>
>>>>>>> >> Dave wrote:
>>>>>>> >>>
>>>>>>> >>> On 21/08/2010 03:59, Michael A. Terrell wrote:
>>>>>>> >>> >
>>>>>>> >>> > geoff wrote:
>>>>>>> >>>
>>>>>>> >>> > That's a very good example of why most people with brains
>>>>>>> left
>>>>>>> >>> Europe
>>>>>>> >>> > for 'The new World'.
>>>>>>> >>>
>>>>>>> >>> So how come Britain made a better nuclear bomb than the New
>>>>>>> World? And
>>>>>>> >>> the New World wanted as much detail of our superior technology as
>>>>>>> they
>>>>>>> >>> could get?
>>>>>>> >>
>>>>>>> >>
>>>>>>> >> What superior technology? Lucas?
>>>>>>> > No "superior technology" has come out of GB since about 1950. - and
>>>>>>> > that may be stretchng it. There have been a few "good ideas" since
>>>>>>>
>>>>>>> I might be wrong but I thought Concorde started flying after 1950.
>>>>>>> Though then again the Septics didn't like the noise, or was it a
>>>>>>> classic
>>>>>>> case of "Not Invented Here" syndrome?
>>>>>>
>>>>>>
>>>>>> It was a fast plane, but a poor design.
>>>>>
>>>>> Not that bad really as it was the first one..
>>>>>
>>>>>> They spent wads of money to
>>>>>> build and maintain them, then junked the entire fleet. It was noisy
>>>>>> and
>>>>>> very fuel inefficient. That forced the fares so high that they weren't
>>>>>> able to compete with better planes from multiple countries.
>>>>>
>>>>> What other supersonic airliners are those then?...
>>>>
>>>> Don't read well, do you? The 747 kicked its butt.
>>>
>>>The 747 goes about 600 mph top whack.
>>>Supersonic means greater than 768 mph so the 747 ain't a supersonic
>>>airliner.
>>>
>>>You might have a military plane faster but you haven't got a passenger
>>>airliner faster.
>> The 747 (on a bad day) moves more passenger-miles per hour on less
>>than 1/4 the lbs of fuel per passenger mile than the concorde could
>>dream of on it's best day
>
>You could say more or less the same comparing a ford fiesta and a rolls
>royce

I think you'll find that a Rolls will move more passenger-miles per hour than
a Ford Fiesta. ;-)

== 10 of 10 ==
Date: Sun, Aug 29 2010 3:43 pm
From: aemeijers

geoff wrote:
> In message <40j376ljgj96q0brsbaofkk2dfkubc76gc@4ax.com>,
> clare@snyder.on.ca writes
>> On Sun, 22 Aug 2010 18:13:58 +0100, ><(((°> <nospam@butfish.com>
>> wrote:
>>
>>> On Sun, 22 Aug 2010 16:45:08 +0100, krw@att.bizzzzzzzzzzzz
>>> <krw@att.bizzzzzzzzzzzz> wrote:
>>>
>>>> On Sun, 22 Aug 2010 12:01:04 +0100, tony sayer <tony@bancom.co.uk>
>>>> wrote:
>>>>
>>>>> In article <-NmdnY7Fjv0c5e3RnZ2dnUVZ_sidnZ2d@earthlink.com>,
>>>>> Michael A.
>>>>> Terrell <mike.terrell@earthlink.net> scribeth thus
>>>>>>
>>>>>>> <(((°> wrote:
>>>>>>>
>>>>>>> On Sat, 21 Aug 2010 22:26:53 +0100, <clare@snyder.on.ca> wrote:
>>>>>>>
>>>>>>> > On Sat, 21 Aug 2010 14:46:34 -0400, "Michael A. Terrell"
>>>>>>> > <mike.terrell@earthlink.net> wrote:
>>>>>>> >
>>>>>>> >>
>>>>>>> >> Dave wrote:
>>>>>>> >>>
>>>>>>> >>> On 21/08/2010 03:59, Michael A. Terrell wrote:
>>>>>>> >>> >
>>>>>>> >>> > geoff wrote:
>>>>>>> >>>
>>>>>>> >>> > That's a very good example of why most people with brains
>>>>>>> left
>>>>>>> >>> Europe
>>>>>>> >>> > for 'The new World'.
>>>>>>> >>>
>>>>>>> >>> So how come Britain made a better nuclear bomb than the New
>>>>>>> World? And
>>>>>>> >>> the New World wanted as much detail of our superior
>>>>>>> technology as
>>>>>>> they
>>>>>>> >>> could get?
>>>>>>> >>
>>>>>>> >>
>>>>>>> >> What superior technology? Lucas?
>>>>>>> > No "superior technology" has come out of GB since about 1950.
>>>>>>> - and
>>>>>>> > that may be stretchng it. There have been a few "good ideas" since
>>>>>>>
>>>>>>> I might be wrong but I thought Concorde started flying after 1950.
>>>>>>> Though then again the Septics didn't like the noise, or was it a
>>>>>>> classic
>>>>>>> case of "Not Invented Here" syndrome?
>>>>>>
>>>>>>
>>>>>> It was a fast plane, but a poor design.
>>>>>
>>>>> Not that bad really as it was the first one..
>>>>>
>>>>>> They spent wads of money to
>>>>>> build and maintain them, then junked the entire fleet. It was noisy
>>>>>> and
>>>>>> very fuel inefficient. That forced the fares so high that they
>>>>>> weren't
>>>>>> able to compete with better planes from multiple countries.
>>>>>
>>>>> What other supersonic airliners are those then?...
>>>>
>>>> Don't read well, do you? The 747 kicked its butt.
>>>
>>> The 747 goes about 600 mph top whack.
>>> Supersonic means greater than 768 mph so the 747 ain't a supersonic
>>> airliner.
>>>
>>> You might have a military plane faster but you haven't got a passenger
>>> airliner faster.
>> The 747 (on a bad day) moves more passenger-miles per hour on less
>> than 1/4 the lbs of fuel per passenger mile than the concorde could
>> dream of on it's best day
>
> You could say more or less the same comparing a ford fiesta and a rolls
> royce
>

A fully-loaded city bus and the RR would be a more meaningful
comparision/analogy.

--
aem sends...

==============================================================================
TOPIC: Does anybody fix CRT big screen/save the parts?
http://groups.google.com/group/sci.electronics.repair/t/ae926ce5c324ba0c?hl=en
==============================================================================

== 1 of 4 ==
Date: Sun, Aug 29 2010 7:46 am
From: bob u

Just taking a pole on whether its work saving parts from tube type big
screen TV's. I have one i am about to junk or give away. Put new CRT
and one drive board in it, and it had other issues. sat for years.

I am clearing space now, and debating if to save anything at all
or dump it. It seems on the resale market they are virtually
worthless with the advent of Plasma and LCD big screens.
The same with CRT based computer monitors. I have a nice 19"
high end NEC that is working that i cannot sell for $20.

It really does not matter how much the parts are worth, if you
never use them why save them?

opinions?

bob

== 2 of 4 ==
Date: Sun, Aug 29 2010 7:49 am
From: Jeffrey Angus

On 8/29/2010 9:46 AM, bob u wrote:
> It really does not matter how much the parts are worth, if you
> never use them why save them?

pack rats. ;-)
That and most places have outlawed throwing electronics into
the trash.

Jeff

== 3 of 4 ==
Date: Sun, Aug 29 2010 9:39 am
From: "Arfa Daily"

"Jeffrey Angus" <jangus@suddenlink.net> wrote in message
news:4c7a7382$0$11837$bbae4d71@news.suddenlink.net...
> On 8/29/2010 9:46 AM, bob u wrote:
>> It really does not matter how much the parts are worth, if you
>> never use them why save them?
>
> pack rats. ;-)
> That and most places have outlawed throwing electronics into
> the trash.
>
> Jeff

Hard though it is for 'serial saver engineers' junk 'em whilst you still
can. Nobody is ever going to want them or parts from them, ever again. Leave
it much longer, and the eco bollox laws coming in everywhere, will have you
paying them to take them off your hands for 'recycling' ...

Arfa

== 4 of 4 ==
Date: Sun, Aug 29 2010 2:05 pm
From: PlainBill47@yawho.com

On Sun, 29 Aug 2010 09:46:47 -0500, bob u <sound@inetnebr.com> wrote:

>Just taking a pole on whether its work saving parts from tube type big
>screen TV's. I have one i am about to junk or give away. Put new CRT
>and one drive board in it, and it had other issues. sat for years.
>
>I am clearing space now, and debating if to save anything at all
>or dump it. It seems on the resale market they are virtually
>worthless with the advent of Plasma and LCD big screens.
>The same with CRT based computer monitors. I have a nice 19"
>high end NEC that is working that i cannot sell for $20.
>
>
>
>It really does not matter how much the parts are worth, if you
>never use them why save them?
>
>opinions?
>
>bob

Locally there are some people who still advertise (via Craigslist,
usually) their ability to repair 'Big Screen' TVs, this is certainly a
last gasp attempt to feel relevant in the age of digital TVs. True,
it may seem less expensive to repair an aging 40" RP dinosaur, the
fact that an equivalent 40" LCD is available for less than $500 with
vastly better picture should deter anyone from authorizing anything
but the most trivial repairs.

As far as demand for the dead ones, they are listed daily as Craiglist
freebies, usually with the qualifications 'Should be a cheap fix',
'probably only needs a switch', or '3-D effect. The parts cost less
than $100.'

As far as CRT monitors, you might get a nibble on the 19" if you cut
your price in half. 21" and larger are in demand by 'Serious Gamers'
(an oxymoron if I ever heard one) and go for as high as $25.

PlainBill

==============================================================================
TOPIC: VCM driver
http://groups.google.com/group/sci.electronics.repair/t/59e08ffb8304f775?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Aug 29 2010 1:32 pm
From: "stickyfox@gmail.com"

I have a light engine assembly from a Samsung DLP rear projector left
over from a repair. It's the assembly that the MMD bolts to. It has a
light pipe, which I understand, a hole for the MMD which, tho it
amazes me, I understand, two lenses, and a mirror, all of which I
understand.

But what I don't get is this electronic gadget attached to the back of
the mirror. At first I thought it was a temperature sensor, but
recently when I got a chance to inspect it more closely I see that it
is marked "VCM driver - Hysonic," search terms which dig up all kinds
of interesting things. What function does this thing serve in a TV? Is
this some kind of anti-aliasing technology like the lens vibrator in a
digital camera? Just curious.

==============================================================================
TOPIC: drawing
http://groups.google.com/group/sci.electronics.repair/t/192cacc0ef7497cf?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Aug 29 2010 3:00 pm
From: "Vince"

Hi!
I am looking for a service manuel for a Magnavox Mdl 32MF231D.
Thank you
Vince
Vince Schmitt
2145 Linden St
Sidney Ne. 69162

==============================================================================
TOPIC: Automotive battery charger circuit breaker.
http://groups.google.com/group/sci.electronics.repair/t/0164462cb92aa394?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Aug 29 2010 4:35 pm
From: Sy

On 2010-08-28 10:58, Jamie wrote:
> Sy wrote:
>
>> Hi.
>> Does anyone know where to find a replacement circuit breaker for a 6A
>> automotive battery charger?
>>
>> The charger is from the '70's, a simple basic transformer and 2 diodes . The
>> circuit breaker is the type that automatically resets. The old one was a
>> little glass tube, but I've seen the type that are square with threaded
>> terminals too. Either one would work.
>>
>> Thanks.
> You need a BI metal circuit breaker..
>
> Just go to your local auto parts store and get a
> plug breaker used for power windows etc in the upper cars..
>
>
>
Thanks, I tried those plug-in breakers. They all seem to be type II, such that
the power has to be removed for the device to reset. I also tried the little PTC
devices, similarly they won't reset with the load still there.

Littlefuse 812006 seems to be what I need, now all I have to do is find a source
nearby.

Thanks.

==============================================================================

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