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

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Today's topics:

* speaker phasing - 9 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/eca184e4b70201fe?hl=en
* sex scams in vietnam and other places - 5 messages, 4 authors
http://groups.google.com/group/sci.electronics.repair/t/152a2989e2e11e4a?hl=en
* Garmin Nuvi 42 Does not power up with battery - 5 messages, 5 authors
http://groups.google.com/group/sci.electronics.repair/t/61c54c6ca4467020?hl=en
* TV parts - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/49690f8dbddf787e?hl=en
* Energy Concepts Model 50200B schematic - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/cbe08c9b07d09002?hl=en
* transmit wirelessly from laptop to LCD TV?? - 4 messages, 4 authors
http://groups.google.com/group/sci.electronics.repair/t/e6ae6a4f928b739f?hl=en
* What's it called ... ? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/ecc022623ecb3497?hl=en

==============================================================================
TOPIC: speaker phasing
http://groups.google.com/group/sci.electronics.repair/t/eca184e4b70201fe?hl=en
==============================================================================

== 1 of 9 ==
Date: Sat, Dec 7 2013 6:15 am
From: "William Sommerwerck"


I just found the following quote:

"Only the woofer/subwoofer were not bipolar. These relied in the use of SF6
(sulfur hexafluoride) gas (which is inert), to increase the virtual volume of
the enclosure. As SF6 is an 'ideal gas', it operates as an 'isothermal'
spring, thus avoiding the problems with 'acoustic-suspension' loudspeakers
that operated partially as an isothermal and partially as an adiabatic system.
Some designers seemed to lave little knowledge of Boyles Law or the Laws of
Thermodynamics.

"In effect, the use of SF6, increases the virtual volume of the enclosure by a
factor of 27! As can be appreciated, this both lowers the distortion as well
as permitting a lower resonant frequency of the woofer."

It's here...

http://www.dayton-wright.com/WATSONLABS_.html

I should point out that the bass cabinet is not completely filled with SF6. If
I recall correctly, the gas bags were separated with foam sheets.





== 2 of 9 ==
Date: Sat, Dec 7 2013 2:31 pm
From: "Phil Allison"



"William Sommerwerck"
>
>>>> It's been done. William Michael Watson Dayton-Wright built
>>>> conventional dynamic speakers with bags of SF6 in the woofer box.
>
>>> ** For what advantage ?
>
>>> The speed of sound is about half in SF6 but that is no help in a sealed
>>> box where resonance depends only on the stiffness of the volume of
>>> gas trapped behind the woofer.
>>
>>> The smaller the volume or the larger the woofer, the stiffer it becomes.
>
>> The lower speed of sound makes the bag appear to have a larger acoustic
>> volume than the air it replaces.
>
> ** You have simply ignored the question, which is the stiffness of a fixed
> volume of gas.
>
> Take a look at Boyle's Law (PV = k)
>
> As Michael Flanders put it...


** You have ignored the question AGAIN !!!!!


> I found the spec sheet. He describes the SF6 as performing a linearizing
> function.

** Pure marketing hype.


>> Really. The bass cabinet was about 20" by 20" by 12".
>
> ** That is not a "small cabinet" at circa 50 litres internal volume.
>
> I consider it "small",


** Yawnnnnnnnnnnnnnnnnn....

It is not small - a 10 litre box is small.

And Boyle's law makes all the claims re SF6 all wrong.



.... Phil






== 3 of 9 ==
Date: Sat, Dec 7 2013 2:46 pm
From: "Phil Allison"



"William Sommerwerck"

>I just found the following quote:


** I found it two days ago and roared laughing.

It is the greatest pile of * bullshit * I have ever seen about woofers.


> "Only the woofer/subwoofer were not bipolar. These relied in the use of
> SF6 (sulfur hexafluoride) gas (which is inert), to increase the virtual
> volume of the enclosure. As SF6 is an 'ideal gas', it operates as an
> 'isothermal' spring, thus avoiding the problems with 'acoustic-suspension'
> loudspeakers that operated partially as an isothermal and partially as an
> adiabatic system. Some designers seemed to lave little knowledge of Boyles
> Law or the Laws of Thermodynamics.
>
> "In effect, the use of SF6, increases the virtual volume of the enclosure
> by a factor of 27! As can be appreciated, this both lowers the distortion
> as well as permitting a lower resonant frequency of the woofer."
>
> It's here...
>
> http://www.dayton-wright.com/WATSONLABS_.html


** Marketing hype - not engineering fact.

The very next line is soooo telling:

" But to use this, a larger cone mass is needed and the suspension has to be
much more compliant."

Cos it contradicts the rest of the hype.

If SF6 worked as claimed, standard woofers would be all that was needed.

It doesn't.



.... Phil






== 4 of 9 ==
Date: Sun, Dec 8 2013 5:15 am
From: "William Sommerwerck"


Unfortunately, Mr Anuson, I owned these speakers and can vouch for their
performance.

Mr Anuson, name a brand and model of woofer, of the volume given, that can get
down to 16Hz with such low distortion. I'm waiting...

It's impossible to have any kind of a discussion -- you know everything.
You're polite when people agree with you, and a vicious -- I can't think of
anything bad enough -- when they don't.





== 5 of 9 ==
Date: Sun, Dec 8 2013 5:57 am
From: "William Sommerwerck"


Here's the answer to your question about Boyle's Law (which you will ignore,
of course)...

PV = k assumes a constant temperature. If the temperature changes, then PV
changes. The relationship is no longer linear, and as the air trapped in the
cabinet is supposedly providing a significant part of the restoring force, the
cone's displacement will not be as linear. (Duh... Get it?)

This is what WDW is talking about when he says "As SF6 is an 'ideal gas', it
operates as an 'isothermal' spring, thus avoiding the problems with
'acoustic-suspension' loudspeakers that operated partially as an isothermal
and partially as an adiabatic system. Some designers seemed to lave little
knowledge of Boyles Law or the Laws of Thermodynamics."

There is no such thing as an ideal gas, so WDW is wrong on this particular
point. However, if SF6 is significantly closer to being an isothermal gas than
air is, * then what he says makes sense. QED.

Gotcha! Finally got ya!

You may now jump up and down, Rumplestiltskin, until you break through the
floor.

* I can't find anything on this at the moment. But I'm looking.





== 6 of 9 ==
Date: Sun, Dec 8 2013 7:40 am
From: "Maynard A. Philbrook Jr."


In article <l81tsp$u0v$1@dont-email.me>, grizzledgeezer@comcast.net
says...
>
> Here's the answer to your question about Boyle's Law (which you will ignore,
> of course)...
>
> PV = k assumes a constant temperature. If the temperature changes, then PV
> changes. The relationship is no longer linear, and as the air trapped in the
> cabinet is supposedly providing a significant part of the restoring force, the
> cone's displacement will not be as linear. (Duh... Get it?)
>
> This is what WDW is talking about when he says "As SF6 is an 'ideal gas', it
> operates as an 'isothermal' spring, thus avoiding the problems with
> 'acoustic-suspension' loudspeakers that operated partially as an isothermal
> and partially as an adiabatic system. Some designers seemed to lave little
> knowledge of Boyles Law or the Laws of Thermodynamics."
>
> There is no such thing as an ideal gas, so WDW is wrong on this particular
> point. However, if SF6 is significantly closer to being an isothermal gas than
> air is, * then what he says makes sense. QED.
>
> Gotcha! Finally got ya!

But But But but!!!!!

:)
Jamie




== 7 of 9 ==
Date: Sun, Dec 8 2013 9:36 am
From: "William Sommerwerck"


"Maynard A. Philbrook Jr." wrote in message
news:MPG.2d0e5cef27c0eb009896e0@news.eternal-september.org...
In article <l81tsp$u0v$1@dont-email.me>, grizzledgeezer@comcast.net
says...

>> Gotcha! Finally got ya!

> But But But but!!!!!
> :)

Indeed. Hoist with his own petard.

The best part is that the point was reasonable, so I had to do some research.
In the process, I learned something.





== 8 of 9 ==
Date: Sun, Dec 8 2013 1:32 pm
From: "Phil Allison"



"William Sommerwanker"
>
> Here's the answer to your question about Boyle's Law (which you will
> ignore, of course)...
>
> PV = k assumes a constant temperature.

** PV= k shows that it does not matter what the gas is - the same volume
changes produce the same pressure changes.

So the stiffness of an enclosed volume of gas is the same for all gasses.

The resonance frequency of a woofer will be unaffected by it.


> If the temperature changes,

** Yawnnnnnnnnnnnn.....


Dunno who is the bigger LIAR.

You or the fuckwit you are mindlessly quoting.



.... Phil












== 9 of 9 ==
Date: Sun, Dec 8 2013 4:16 pm
From: "William Sommerwerck"


"Phil Allison" wrote in message news:bgk6rmF8e5nU1@mid.individual.net...
"William Sommerwanker"

> Here's the answer to your question about Boyle's Law (which you will ignore,
> of course)...

> PV = k assumes a constant temperature.

** PV= k shows that it does not matter what the gas is - the same volume
changes produce the same pressure changes.

Uh... No it doesn't. k is temperature-dependent. Sorry about that,. but all
you have to do is look it up.
If a gas isn't perfect, then compressing (or rarefying it) changes its
temperature. This causes the pressure to change more than that caused by the
volume change. The result is a non-linear restoring force.


> So the stiffness of an enclosed volume of gas is the same for all gasses.
> The resonance frequency of a woofer will be unaffected by it.

That's not what we're talking about, Mr Anuson.


> Dunno who is the bigger LIAR.
> You or the fuckwit you are mindlessly quoting.

I'm quoting physics books.






==============================================================================
TOPIC: sex scams in vietnam and other places
http://groups.google.com/group/sci.electronics.repair/t/152a2989e2e11e4a?hl=en
==============================================================================

== 1 of 5 ==
Date: Sat, Dec 7 2013 7:03 am
From: krw@attt.bizz


On Sat, 07 Dec 2013 07:04:49 -0500, Stormin Mormon
<cayoung61@hotmail.com> wrote:

>On 12/6/2013 11:43 PM, Michael A. Terrell wrote:
>>> Were you in 'Nam during that time? Telling things from word of mouth or
>>> from real real life experience?
>>
>> My orders to Vietnam were changed to Alaska at the last minute. The
>> TV station I was to work at was over run about two weeks after I would
>> have arrived, and it's very likely I wouldn't be here since most of the
>> staff was killed. I got what was left of a 5 KW Gates VHF TV transmitter
>> for parts at the station in Alaska.
>>
>> I had several underage girls try to trick me into bed while stationed
>> at Ft. Rucker. They used a lot of makeup, and some guys fell for it.
>> The worst part was that their families were making them prostitute
>> themselves because the parent or parents were too lazy to work. Some of
>> the girls were just 13. A couple of the other soldiers kept track of
>> who they were, and warned you they were minors. Still, a lot of guys
>> were screwed out of half of their pay, until they retired or didn't
>> re-enlist.
>
>I think it's a real shame, that we lose so many
>good people in that war. Glad that the spread
>of communism was slowed, for a while.
>
>A wise writer once wrote "thou shalt not commit
>adultery". If people would live that commandment,
>they would have better lives in so many ways.

fornication <> adultery. Get your bible straight, Mormon.





== 2 of 5 ==
Date: Sat, Dec 7 2013 7:05 am
From: krw@attt.bizz


On Fri, 06 Dec 2013 23:45:57 -0600, The Daring Dufas
<the-daring-dufas@stinky-finger.net> wrote:

>On 12/6/2013 10:45 PM, Michael A. Terrell wrote:
>>
>> The Daring Dufas wrote:
>>>
>>> Funny how the sex scam never changes. There's been a story about a
>>> football player who was accused of rape a year after it allegedly
>>> occurred only after his accuser found out he may wind up making lots of
>>> money playing professional ball. No, I'm not a football fan. ^_^
>>
>>
>> Footballs make terrible fans. Not enough surface area, and quite
>> unstable at high speeds. ;-)

Too aerodynamic. ...by design.

>
>They're only good for dodge ball. ^_^

That pointy end hurts!




== 3 of 5 ==
Date: Sun, Dec 8 2013 11:15 am
From: "Shaun"




"Stormin Mormon" wrote in message news:y9Eou.485493$c56.319033@fx32.iad...

On 12/6/2013 11:43 PM, Michael A. Terrell wrote:
>> Were you in 'Nam during that time? Telling things from word of mouth or
>> from real real life experience?
>
> My orders to Vietnam were changed to Alaska at the last minute. The
> TV station I was to work at was over run about two weeks after I would
> have arrived, and it's very likely I wouldn't be here since most of the
> staff was killed. I got what was left of a 5 KW Gates VHF TV transmitter
> for parts at the station in Alaska.
>
> I had several underage girls try to trick me into bed while stationed
> at Ft. Rucker. They used a lot of makeup, and some guys fell for it.
> The worst part was that their families were making them prostitute
> themselves because the parent or parents were too lazy to work. Some of
> the girls were just 13. A couple of the other soldiers kept track of
> who they were, and warned you they were minors. Still, a lot of guys
> were screwed out of half of their pay, until they retired or didn't
> re-enlist.


Why wasn't it reported to authorities, those young girls would likely have
emotional damage from the child prostitution.
They could be taken away from their good for nothing parents and they would
be criminally charged. I guess the difficult thing would not to implicate
your co-workers in solicitation and create a problem.

Shaun







== 4 of 5 ==
Date: Sun, Dec 8 2013 12:43 pm
From: The Daring Dufas


On 12/8/2013 1:15 PM, Shaun wrote:
>
>
> "Stormin Mormon" wrote in message news:y9Eou.485493$c56.319033@fx32.iad...
>
> On 12/6/2013 11:43 PM, Michael A. Terrell wrote:
>>> Were you in 'Nam during that time? Telling things from word of mouth or
>>> from real real life experience?
>>
>> My orders to Vietnam were changed to Alaska at the last minute. The
>> TV station I was to work at was over run about two weeks after I would
>> have arrived, and it's very likely I wouldn't be here since most of the
>> staff was killed. I got what was left of a 5 KW Gates VHF TV transmitter
>> for parts at the station in Alaska.
>>
>> I had several underage girls try to trick me into bed while stationed
>> at Ft. Rucker. They used a lot of makeup, and some guys fell for it.
>> The worst part was that their families were making them prostitute
>> themselves because the parent or parents were too lazy to work. Some of
>> the girls were just 13. A couple of the other soldiers kept track of
>> who they were, and warned you they were minors. Still, a lot of guys
>> were screwed out of half of their pay, until they retired or didn't
>> re-enlist.
>
>
> Why wasn't it reported to authorities, those young girls would likely
> have emotional damage from the child prostitution.
> They could be taken away from their good for nothing parents and they
> would be criminally charged. I guess the difficult thing would not to
> implicate your co-workers in solicitation and create a problem.
>
> Shaun
>

Shaun, too late, those young girls are now grandmothers. ^_^

TDD





== 5 of 5 ==
Date: Sun, Dec 8 2013 2:47 pm
From: "Maynard A. Philbrook Jr."


In article <l82lmc$ft2$3@dont-email.me>, the-daring-dufas@stinky-
finger.net says...
>
> On 12/8/2013 1:15 PM, Shaun wrote:
> >
> >
> > "Stormin Mormon" wrote in message news:y9Eou.485493$c56.319033@fx32.iad...
> >
> > On 12/6/2013 11:43 PM, Michael A. Terrell wrote:
> >>> Were you in 'Nam during that time? Telling things from word of mouth or
> >>> from real real life experience?
> >>
> >> My orders to Vietnam were changed to Alaska at the last minute. The
> >> TV station I was to work at was over run about two weeks after I would
> >> have arrived, and it's very likely I wouldn't be here since most of the
> >> staff was killed. I got what was left of a 5 KW Gates VHF TV transmitter
> >> for parts at the station in Alaska.
> >>
> >> I had several underage girls try to trick me into bed while stationed
> >> at Ft. Rucker. They used a lot of makeup, and some guys fell for it.
> >> The worst part was that their families were making them prostitute
> >> themselves because the parent or parents were too lazy to work. Some of
> >> the girls were just 13. A couple of the other soldiers kept track of
> >> who they were, and warned you they were minors. Still, a lot of guys
> >> were screwed out of half of their pay, until they retired or didn't
> >> re-enlist.
> >
> >
> > Why wasn't it reported to authorities, those young girls would likely
> > have emotional damage from the child prostitution.
> > They could be taken away from their good for nothing parents and they
> > would be criminally charged. I guess the difficult thing would not to
> > implicate your co-workers in solicitation and create a problem.
> >
> > Shaun
> >
>
> Shaun, too late, those young girls are now grandmothers. ^_^
>
> TDD

And most likely have no idea who the daddies are for all the kids
they popped out!

Jamie






==============================================================================
TOPIC: Garmin Nuvi 42 Does not power up with battery
http://groups.google.com/group/sci.electronics.repair/t/61c54c6ca4467020?hl=en
==============================================================================

== 1 of 5 ==
Date: Sat, Dec 7 2013 6:25 am
From: M.Joshi



I have a Garmin Nuvi 42 GPS device which does not power up from the
battery.

If I remove the battery and apply power via the USB socket, the unit
powers up. As soon as I connect the battery, the unit switches off.

The battery appears to be quite new and a good voltage.




--
M.Joshi




== 2 of 5 ==
Date: Sat, Dec 7 2013 7:36 am
From: N_Cook


On 07/12/2013 14:25, M.Joshi wrote:
>
> I have a Garmin Nuvi 42 GPS device which does not power up from the
> battery.
>
> If I remove the battery and apply power via the USB socket, the unit
> powers up. As soon as I connect the battery, the unit switches off.
>
> The battery appears to be quite new and a good voltage.
>
>
>
>

Is there a mechanical diverter switch inside the USB socket, like inside
simple pin and ring/ dual concentric power connectors?




== 3 of 5 ==
Date: Sat, Dec 7 2013 8:31 am
From: M.Joshi



N_Cook;3161821 Wrote:
> On 07/12/2013 14:25, M.Joshi wrote:-
>
> I have a Garmin Nuvi 42 GPS device which does not power up from the
> battery.
>
> If I remove the battery and apply power via the USB socket, the unit
> powers up. As soon as I connect the battery, the unit switches off.
>
> The battery appears to be quite new and a good voltage.
>
>
>
> -
>
> Is there a mechanical diverter switch inside the USB socket, like inside
>
> simple pin and ring/ dual concentric power connectors?

Not that I can see - just looks like a normal micro-USB socket (vertical
PCB mounted).




--
M.Joshi




== 4 of 5 ==
Date: Sat, Dec 7 2013 10:53 am
From: mike


On 12/7/2013 6:25 AM, M.Joshi wrote:
>
> I have a Garmin Nuvi 42 GPS device which does not power up from the
> battery.
>
> If I remove the battery and apply power via the USB socket, the unit
> powers up. As soon as I connect the battery, the unit switches off.
>
> The battery appears to be quite new and a good voltage.
>
>
>
>
For the benefit of those of us who can't take apart a Nuvi 42 and look
inside...

Was it working then broke? Or did you buy it used broke?
How do you remove the battery? unsolder wires? unplug? how many
conductors?

What's the battery chemistry? How many cells? I'm gonna assume some
form of lithium,
but I have no idea how old a 42 is.

Where is the battery protection circuit? Integral with the battery? on the
GPS circuit board? Which side of the protection circuit are you measuring?

What's your definiition of good? Battery voltage is determined by
numbers. "Good" is not a number, and it can matter.

What's the voltage on the battery connection where you removed
the battery with the usb plugged in?

Fuses on the board?




== 5 of 5 ==
Date: Sat, Dec 7 2013 4:59 pm
From: Jeff Liebermann


On Sat, 7 Dec 2013 15:25:18 +0100, M.Joshi
<M.Joshi.ce8f169@diybanter.com> wrote:

>I have a Garmin Nuvi 42 GPS device which does not power up from the
>battery.
>
>If I remove the battery and apply power via the USB socket, the unit
>powers up. As soon as I connect the battery, the unit switches off.

The warranty is 1 year parts and labor. If you think it's broken,
find your receipt and contact Gamin.
<http://www8.garmin.com/support/warranty.html>

>The battery appears to be quite new and a good voltage.

Appearances don't count for much and assumptions are even worse. From
your description, it sounds like a shorted LiIon battery. Replace
battery:
<http://www.ebay.com/itm/360768752873> $11.24
I couldn't find any instructions on the web on how to replace the
battery.





--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558





==============================================================================
TOPIC: TV parts
http://groups.google.com/group/sci.electronics.repair/t/49690f8dbddf787e?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Dec 7 2013 9:56 am
From: Hench


On 12/4/2013 5:21 PM, Vince Schmitt wrote:
> Hi!
> Where is the best place to buy parts for Panasonic TVs?
> Thank you
> Vince
>


Where do you live? I'm assuming Mongolia since your name is Mongolian
in origin it appears. Look on Mongolian Kijiji.

Or I could be wrong. You may be in Trinidad and/or Tobago.

Then again you may be in Iceland





==============================================================================
TOPIC: Energy Concepts Model 50200B schematic
http://groups.google.com/group/sci.electronics.repair/t/cbe08c9b07d09002?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Dec 7 2013 5:25 pm
From: amdx


Hi all,
I'm looking for calibration data for the Energy Concepts Model 50200B
and Model 20500. I mostly want to know what pot adjusts what. A complete
schematic would be nice.

Similar to these:

http://www.ebay.com/itm/Energy-Concepts-Digital-Solid-State-Power-Supply-Model-20500A-/110896837403?pt=LH_DefaultDomain_0&hash=item19d1f7731b

http://www.ebay.com/itm/ECI-Energy-Concepts-Inc-Model-50200-Digital-Multimeter-/271217912538?pt=LH_DefaultDomain_0&hash=item3f25d8eada

Thanks, Mikek






==============================================================================
TOPIC: transmit wirelessly from laptop to LCD TV??
http://groups.google.com/group/sci.electronics.repair/t/e6ae6a4f928b739f?hl=en
==============================================================================

== 1 of 4 ==
Date: Sat, Dec 7 2013 6:51 pm
From: Roger Blake


On 2013-12-07, Sammy Abernathy <sammy455091@yahoo.com> wrote:
> I want to be able to see my laptop's screen on my 46" LCD TV. Is there
> a cheap way I can do this wirelessly and, if so, how?

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7624371&CatId=384

--
-----------------------------------------------------------------------------
Roger Blake (Change "invalid" to "com" for email. Google Groups killfiled.)

The NSA by its actions has shredded the 4th Amendment of the Constitution
and has essentially declared war on the American people. Put the NSA leaders
on trial for treason, and upon being found guilty, publicly execute them to
send a strong message. God bless Ed Snowden! Death to NSA thugs!
-----------------------------------------------------------------------------




== 2 of 4 ==
Date: Sun, Dec 8 2013 9:19 am
From: dave


On 12/07/2013 06:51 PM, Roger Blake wrote:
> On 2013-12-07, Sammy Abernathy <sammy455091@yahoo.com> wrote:
>> I want to be able to see my laptop's screen on my 46" LCD TV. Is there
>> a cheap way I can do this wirelessly and, if so, how?
>
> http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7624371&CatId=384
>

Do you have Blutooth [sic] on both devices? Does the TV have a USB
input? You can get Blootooth dongles,




== 3 of 4 ==
Date: Sun, Dec 8 2013 11:40 am
From: mike


On 12/8/2013 9:19 AM, dave wrote:
> On 12/07/2013 06:51 PM, Roger Blake wrote:
>> On 2013-12-07, Sammy Abernathy <sammy455091@yahoo.com> wrote:
>>> I want to be able to see my laptop's screen on my 46" LCD TV. Is there
>>> a cheap way I can do this wirelessly and, if so, how?
>>
>> http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7624371&CatId=384
>>
>>
>
> Do you have Blutooth [sic] on both devices? Does the TV have a USB
> input? You can get Blootooth dongles,

I have two older technology devices like this.
Great for watching a movie.
Reading text is impossible.
Imagine a picture with way too much jpg compression.
I expect current generation is better...just hard to
tell without seeing one in action.
Cheapest may not be the best metric.

Suggest you get a demo before spending a lot of money.
At lest get advice from someone who actually uses the
EXACT model you're contemplating.




== 4 of 4 ==
Date: Sun, Dec 8 2013 1:12 pm
From: Adrian C


On 07/12/2013 13:59, Sammy Abernathy wrote:
> I want to be able to see my laptop's screen on my 46" LCD TV. Is there
> a cheap way I can do this wirelessly and, if so, how?

Connect a video camera to the TV, focus and point it at the laptop
screen. There you go! Wireless :p

If you just want to watch video files you have stored on the laptop, a
network connected media player would be a solution to access the laptop
drive via WiFi. Cheap, you might have one already built into your TV if
it advertises itself as "Smart" or DNLA, or similar built into connected
Blueray or PVR equipment.

There are also software methods about (e.g VLC) to turn a computer
display into a video stream, that may also be rendered by such a media
player. Won't be the best in responsiveness as there will be a delay for
encoding the stream - so useless for gaming.

And then there's wireless HDMI....

--
Adrian C








==============================================================================
TOPIC: What's it called ... ?
http://groups.google.com/group/sci.electronics.repair/t/ecc022623ecb3497?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Dec 8 2013 3:27 pm
From: chuck


On Mon, 2 Dec 2013 12:09:14 -0000, "Arfa Daily"
<arfa.daily@ntlworld.com> wrote:

>
>
>"JW" <none@dev.null> wrote in message
>news:reqo995bcf5p9sg37rcr2rkqn0nce51akr@4ax.com...
>> On Mon, 02 Dec 2013 06:03:50 -0500 JW <none@dev.null> wrote in Message id:
>> <m7qo99hiskcsmgr2679qjq49tno4465av1@4ax.com>:
>>
>>>On Mon, 2 Dec 2013 10:01:10 -0000 "Arfa Daily" <arfa.daily@ntlworld.com>
>>>wrote in Message id: <68Zmu.992$8z2.404@fx18.am4>:
>>>
>>>>Anyone know the name or catalogue description of that flat ribbon cable,
>>>>usually grey but sometimes black, that has a sort of 'web' between the
>>>>conductors, and is tinned when you strip it ? Each individual wire is
>>>>probably about one wire-width distant from its neighbours, so a piece say
>>>>8
>>>>conductors wide would be about the same width as a 'traditional' ribbon
>>>>of
>>>>16 conductors. It's used to interconnect boards typically - think HK
>>>>Actor
>>>>or various Fender combos that have the preamp tubes on separate sub
>>>>boards.
>>>>Also used with those dreadful snatch connectors where the contacts grip
>>>>the
>>>>soldered wire surface so hard that you always finish up with the tinned
>>>>tails bending, which then makes them a bitch to get back into the
>>>>connector.
>>>>
>>>>Anyone ?
>>>>
>>>>Arfa
>>>
>>>Possibly?
>>>http://www.digikey.com/product-detail/en/3365%2F06%20300SF/MC06G-300-ND/1832096
>>
>> Or better yet
>> http://www.digikey.com/product-detail/en/8125%2F04%20100/ML04G-100-ND/1107830
>>
>
>That looks pretty much like it. Looks like it's made by 3M. I'll do some
>more hunting based on that. Thanks for your input
>
>Arfa


It is made by 3M. We used to get it from Mouser or Digikey to repair
Sony BetaCam decks. Some operators would constantly move the control
panel up and down breaking the ribbon cable link. Chuck




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