Toshiba TV29C90 problem; Image fades to black...

[Michael A. Terrell]

Rich The Newsgroup Wacko wrote:

"Since the sky is green, I guess I'll plant some bluegrass, and
paint my house clear."

You truly are an idiot. Bluegrass is growing all over kentucky, and
some gets planted every year. Notr only that, but you can listen to it
on the radio or TV.


--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

 

[Pooh Bear]

TimPerry wrote:

"Pooh Bear" <rabbitsfriendsandrelations@hotmail.com> wrote in message
news:42AAF052.9F7158DC@hotmail.com...

jackbruce9999@yahoo.com wrote:

.see also this previous thread where someone else uses the same
terminology ("DC sine wave")....

Just because someone else used the term doesn't make it right ! There's
plenty of rubbish spouted on the net.

Graham

Once in a while someone coins a new term like Heinleins' waldo... but I
don't think its going to happen here.

What has been described is similar to the waveform one would see on the grid
of a class A tube circuit. (but negative voltage of course)

There are a number of waveforms that go in only one direction relative to
ground such as sawtooth waves, square waves, and triangle waves. To refer
to these as say a "DC triangle wave" would be equally confusing without
further qualification.

The closest descriptor that I can think of offhand that might meet with
general acceptance would be "bias signal".

Another waveform that's very similar ( albeit more of a sawtooth waveform rather
than sine wave ) is power line ripple on a DC supply rail.

Graham

 

[NSM]

"Bob Penoyer" <bob@NOSPAMbobpenoyer.com> wrote in message
news:u9bna11e262leph8vnlt4gnrbdkuqk3f3l@4ax.com...

A rectified AC waveform contains DC and AC components but if the
current isn't changing direction, it isn't alternating current. And,
if it isn't AC, it's DC.

It's DC with a ripple riding on top of it. With no filtering the ripple runs
down to zero.

N

 

[NSM]

<invadar@mail.com> wrote in message
news:1118552856.821173.155100@g14g2000cwa.googlegroups.com...
I have a broken power output plug on my laptop psu.
it is like a svideo mini din plug but has 4 pins in a roughly
square formation except that the bottom pair of pins are slightly
closer together than the top pair. it has no plastic locator inside the
barrel of the plug but has two indented locators on the outer steel
barrel. The plug is round and has the same outward appearance as the
svideo plugs.

I have tried maplins and RS components but can not find the listed
as I begrudge paying Ł60 for a new psu for the sake of a plug I would
be most grateful to anyone who could help me source one or who could
give me the proper name for the plug sothat I can try further myself.

Thanks in advance Invadar.

Poke around on http://www.rpelectronics.com/ and see if you can match it.

N

 

[James Sweet]

So here's the question: what about this battery pack makes the
transformer heat up to the point it burns out? There doesn't seem to
be a short in the battery pack, just a few bad cells. . .I don't
understand why this gives the transformer such grief.

Sounds like a few of the cells are shorted, this is causing the battery pack
to draw more current and overheating the transformer. It's possible the
transformer is damaged now but it may be fine.

2. While I was messing with this issue, I needed a drill. I went to
Freight Harbour and bought a very cheap ($30) 18V cordless drill to
tide me over. The battery pack that comes with it is rated at ~19V. I
tested the output from the pack and it was 19.2V. However, the charger
that comes with it is rated at 24V (or it says so on the wall plug).
So I figured they buried a resistor in there somewhere. However, I
tested the output from the charger -- 24.1V. So here's the question:

Will using this 24V charger on the 19.2V pack damage the charger or the
battery pack? I understand that this is a really cheap drill, but how
can they in good conscience provide a mismatched charger/pack? Is it
because 24V transformers are so cheap?

NiCd batteries are charged with a constant current, the voltage from the
charger needs to be higher than the voltage of the battery in order to
charge them, so the high open circuit voltage of your charger is normal, it
should drop down to the battery voltage when the battery is connected.

 

[Michael Kennedy]

Can google shut someone down?? I thought google just runs an archive of all
the newsgroups. I don't use google I use my ISP's Newsgroup server through
outlook. I wonder who actually runs the newsgroup servers.


"NSM" <nowrite@to.me> wrote in message
news:Y2Fqe.44931$on1.29162@clgrps13...

"CRaSH" <sorry@aint-here.spam.com> wrote in message
news:UaEqe.6951$7s.1754@fed1read01...

shred wrote:
if theres one thing i can't stand it's born again christians....if
theres someting else i can't stand it's born again christians in the
wrong place,,...keep it for church

Judging from the groups listed, the OP jacks off while working on his
WIN-98
computer, in his Mustang........
Man, what a hand full (computer wise that is.. ..................

He's a notorious spammer who Google refuses to shut down.

N

 

[Choreboy]

NSM wrote:

jackbruce9999@yahoo.com> wrote in message
news:1118440502.677562.89730@g43g2000cwa.googlegroups.com...

2 questions about a fully DC Sine Wave

One answer. Sine waves aren't DC.

N

I like Jack's terminology. The wave itself isn't DC, but I think "fully
DC" is an acceptable way of describing its location.

AC generators and transformers are usually designed to produce sine
waves with no DC, but sine waves were known long before those inventions.

A wave is a succession of curves. A sine wave is a wave whose
displacement follows the form of a sine. A pure acoustic tone is a sine
wave regardless of ambient pressure. A ripple on a pond is a sine wave
regardless of the water level.

As not all voltage variations are curves, our generic term was
"waveforms". If the plate voltage of an amplifier tube varied from 998
to 1000 volts in the form of a sawtooth, we'd call that two-volt
variation a sawtooth waveform. If it was sinusoidal we'd call it a sine wave.

To call a waveform an AC sine wave implies that there is no DC, but this
thread is the first time I've read the claim that all sine waves are AC
sine waves.

 

[mike]

ljj24@hotmail.com wrote:

Hi,

I have a system which connects to BARCO monitor CD651 as display
(using BNC). I am wondering if the display breaks down and I do not
have a spare BARCO monitor, can I use a laptop screen as a stand in? My
limitation is that I cannot add additional hardware or software to the
system that support multi-monitor functions as I do not have the
authority to modify the system. My only input is the video signal that
is originally supplied to the BARCO monitor. Is there any hardware or
software available that I can install in the laptop to make it as a
secondary display? Rgds.

If the video to the BARCO is NTSC, you have a lot of options to get a
picture on your laptop screen.
Snappy
Dazzle
Intel webcam with video IN digitizer.
Probably a zillion more, those are just the ones I've played with.

Having said that, you might want to mention to those who DO have
authority that anything that is mission critical should have a strategy
to deal with failures.
mike

--
Return address is VALID but some sites block emails
with links. Delete this sig when replying.
..
Wanted, PCMCIA SCSI Card for HP m820 CDRW.
FS 500MHz Tek DSOscilloscope TDS540 Make Offer
Wanted 12" LCD for Compaq Armada 7770MT.
Bunch of stuff For Sale and Wanted at the link below.
MAKE THE OBVIOUS CHANGES TO THE LINK
ht<removethis>tp://www.geocities.com/SiliconValley/Monitor/4710/

 

[none]

On 11 Jun 2005 10:25:29 -0700, "frontline@nospam"
<frontline@email.com> wrote:

There was an odd format 3/4" that top loaded sideways, the tape came
out like an EL cassete or 8 track tape, early JVC I think.
Jeff

JVC also made a VHS machine that took the tape sideways.

 

[Sapient Fridge]

In message <B-mdnWdUOo2lRDbfRVn-3Q@comcast.com>, Michael Kennedy
<Mikek400@nearthlink.net> writes

Can google shut someone down?? I thought google just runs an archive of all
the newsgroups. I don't use google I use my ISP's Newsgroup server through
outlook. I wonder who actually runs the newsgroup servers.

It's not centralised and no one organisation runs the newsgroup servers,
each ISP runs part of the network and article propagate from server to
server. From the previous time this question was asked:

http://en.wikipedia.org/wiki/Newsgroup
http://cam.misc.org.uk/faq1435.html

If you look at the headers of the religious nutter's (Ronald Grossi)
posts the IP address is that the posts originate from is actually AOL
and are posted to Google via their web interface, so complaints to both
are appropriate.

The nutter appears to have stopped for now, the article you replied to
is over a month old.
--
sapient_usenet01@spamsights.org ICQ #17887309 * Save the net *
Grok: http://spam.abuse.net http://www.cauce.org * nuke a spammer *
Find: http://www.samspade.org http://www.netdemon.net * today *
Kill: http://spamsites.org http://spews.org http://spamhaus.org

 

[Wild Bill]

I can't identify your transformer. You will need to do some safe testing of
the xfmr to determine what all the terminals are to, and how they might be
interconnected internally.

Another way to research your part number is to see if other transformer
manufacturers have a replacement product, by way of a product cross
reference search.

It's anybody's guess what the intended purpose of your xfmr was. Back in the
70s, there were many universal-purpose xfmrs available. It was common to
encounter xfmrs that could have various input voltage capability, and
identical dual secondaries, so that the particulr xfmr could be 230, 208,
115 or 110VAC input terminals.

If you are familiar with ohm meter operation, you should be able to
determine the various input and output terminals, without applying power to
the xfmr. A pencil and paper should enable you to determine the terminal
interconnections.
It's possible that some of the 14 terminals might not be used.

Comparing your notes to similar xfmr diagrams will be helpful to identify
multi-tap and center-tapped windings.

I believe you can find xfmr testing info and safety precautions here
http://www.repairfaq.org/REPAIR/

Cheers
WB
..................

"pinpassion" <mjdrum@comcast.net> wrote in message
news:1118411268.900915.134450@g14g2000cwa.googlegroups.com...

Hi Gang,

I have a large and heavy power supply transformer
that is part of a high current power supply project
that was featured in 73 magazine back in 1973. It
was started by a ham radio operator and was never
finished. I am going to finish it, if I can. I am
trying to identify the transformer leads. This is
for a 12 volt, 40 to 60 amp output. Here are the markings:

This transformer was made by ADC and is marked 541-010 REV H.
There is a marking on it that says 3-19470 and what I think
is a date code of 7438. There are terminal connections on one
side that are numbered 1 - 6. On the other side the connections
are numbered 7 - 14. I need to know the connection scheme for
this transformer so I can put it to use. I contacted who I
thought was the manufacturer "ADC" for information, and that
did not help.

I don't have the issue of 73 magazine, and I don't even know
if this is the same transformer that may have been part of the
construction article. I can take pictures and post them if that
might help.

Anybody have any ideas?

Thanks a lot.

Mike

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

 

[NSM]

"ed" <endeitz@gmail.com> wrote in message
news:1118531526.863099.322750@g47g2000cwa.googlegroups.com...

So here's the question: what about this battery pack makes the
transformer heat up to the point it burns out?

"6 of the cells measured 0 volts"

That'll do it.

N

 

[Alan Smith]

google doesn't have all newsgroups, I just looked for archives of one
yesterday and they don't hold them.



"Michael Kennedy" <Mikek400@nearthlink.net> wrote in message
news:B-mdnWdUOo2lRDbfRVn-3Q@comcast.com...

Can google shut someone down?? I thought google just runs an archive of
all the newsgroups. I don't use google I use my ISP's Newsgroup server
through outlook. I wonder who actually runs the newsgroup servers.


"NSM" <nowrite@to.me> wrote in message
news:Y2Fqe.44931$on1.29162@clgrps13...

"CRaSH" <sorry@aint-here.spam.com> wrote in message
news:UaEqe.6951$7s.1754@fed1read01...

shred wrote:
if theres one thing i can't stand it's born again christians....if
theres someting else i can't stand it's born again christians in the
wrong place,,...keep it for church

Judging from the groups listed, the OP jacks off while working on his
WIN-98
computer, in his Mustang........
Man, what a hand full (computer wise that is.. ..................

He's a notorious spammer who Google refuses to shut down.

N

 

[Wild Bill]

It might be a bit more complicated if your monitor is fed by more than one
BNC cable.
If the video and sync are separate (or R-G-B and sync), you may experience
some difficulty finding a hardware interface solution.

I haven't done what you're suggesting, but I've noticed separate V & S
output connectors on Barco source input switchers (to projector) units that
I have.

Cheers
WB
....................

<ljj24@hotmail.com> wrote in message
news:1118558793.106860.88170@f14g2000cwb.googlegroups.com...

Hi,

I have a system which connects to BARCO monitor CD651 as display
(using BNC). I am wondering if the display breaks down and I do not
have a spare BARCO monitor, can I use a laptop screen as a stand in? My
limitation is that I cannot add additional hardware or software to the
system that support multi-monitor functions as I do not have the
authority to modify the system. My only input is the video signal that
is originally supplied to the BARCO monitor. Is there any hardware or
software available that I can install in the laptop to make it as a
secondary display? Rgds.

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

 

[Mark D. Zacharias]

sidneybek@yahoo.com wrote:

Sony 5.1 A/V receiver model:STR-DE345,year:Jan 2000.No power only
relay click I found F901=3 amp fuse to be open when I connected a 100
watt bulb inplace of F901 and pressed power button the light bulb lit
bright and still no display.

<snip>

Thanks in advance.

Sidney
Dartmouth,Nova Scotia
Canada

Despite your previous testing, my money is on one or more shorted output
transistors. These often also get emitter resistors open, and in turn when
that happens there are often bad 2SA988 protection circuit "gate"
transistors as well, even some small resistors associated with them.

Mark Z.

 

[Floyd L. Davidson]

Bob Penoyer <bob@NOSPAMbobpenoyer.com> wrote:

On Sat, 11 Jun 2005 10:36:54 -0400, "Tam/WB2TT"
t-tammaru@c0mca$t.net> wrote:

snip

Yes. DC by definition is zero frequency.

Um, no. DC is Direct Current, i.e., current that flows in one
direction. For example, the output from a rectifier is DC but it
certainly isn't "zero frequency."

Actually, DC from a rectifier *is* "zero frequency", to the
degree that it is DC. Of course until the AC is filtered out,
it has both AC and DC components.

The output of a rectifier contains both AC and DC. You put a filter on it to
get close to pure DC.

That is *precisely* correct. (It just doesn't tell enough of
the story to explain the confusion of this "flows in one
direction" definition of DC.)

A rectified AC waveform contains DC and AC components but if the
current isn't changing direction, it isn't alternating current. And,
if it isn't AC, it's DC.

The output of a rectifier until filtered *does* have both AC and
DC, which actually is another way of saying that yes it *does*
change directions.

What? you say!

The problem is that "direction" only has meaning when measured
in comparison some specific point of reference. If you have
three different reference points, one at the DC level, one at
the peak positive swing and one at the peak negative swing, you
have three very different views of "direction" for current flow:

Reference Direction
Point of flow
========= =====================================

Peak Pos All Negative

DC level Equal cycles of Positive and Negative

Peak Neg All Positive


Obviously the only point of reference you are thinking about is
the Peak Negative swing, and just as clearly that is *not*
appropriate. The correct reference point is necessarily the DC
level, and measured from that point of reference the current is
going to go alternately in each direction.

Bingo, there is your AC.

This is very similar to confusing the negative side of a
rectifer circuit with ground. Rectifiers are most often
grounded on the negative side, but that is absolutely arbitrary.
They can be grounded on the postive side, and with some effort
can have ground at other levels either between those two, or
even beyond either of them.

But rather than look at DC as current going all going in one
direction, and AC as anything else, it is *far* easier to view
it as AC is any current that is changing, and DC is anything
else (i.e., the current is steady).

Technically those definitions are exactly the same, but one
leads to a lot of confusion.

--
Floyd L. Davidson <http://web.newsguy.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@barrow.com

 

[operator jay]

"Floyd L. Davidson" <floyd@barrow.com> wrote in message
news:87y89fzqcu.fld@barrow.com...

The problem is that "direction" only has meaning when measured
in comparison some specific point of reference. If you have
three different reference points, one at the DC level, one at
the peak positive swing and one at the peak negative swing, you
have three very different views of "direction" for current flow:

Reference Direction
Point of flow
========= =====================================

Peak Pos All Negative

DC level Equal cycles of Positive and Negative

Peak Neg All Positive

I think "zero" is a good reference for current flow, and that the actual
(absolute) direction can be measured. Voltages have the reference issues.

j

 

[Helen]

That Troll is NOT a born again Christian. Please don't allow Dipstick's in
need of attention to bias your view.
If he/she/it(?) were a BAC they(it) wouldn't be here doing what it does.
Just use your filters and killfile the
ne'er-do-well juvenile. The pathetic ego of this Troll suffices as evidence
that this is atheistic behavior
designed to elicit the exact response you gave. Better to ignore
it...without attention Trolls leave.

"shred" <shred_monger@hotmail.com> wrote in message
news:1118500257.667619.124790@g47g2000cwa.googlegroups.com...

if theres one thing i can't stand it's born again christians....if
theres someting else i can't stand it's born again christians in the
wrong place,,...keep it for church

 

[Rono]

Thanks, Mr. Walsh, just needed to set up the T.V.
to not display this feature! Thanks for the post. Rono.

 

[Katt]

"Helen" <@abuse.roman.gov> wrote in message
news:kVWqe.686$zm.363@bignews4.bellsouth.net...

The pathetic ego of this Troll suffices as evidence
that this is atheistic behavior
designed to elicit the exact response you gave.

Curious comment. Ego = atheist?

Katt.