sci.electronics.repair - 25 new messages in 16 topics - digest

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

sci.electronics.repair@googlegroups.com

Today's topics:

==============================================================================
TOPIC: Proview 986M 19" monitor fixed
http://groups.google.com/group/sci.electronics.repair/t/dd7c6160c5c07e36?hl=en
==============================================================================

== 1 of 2 ==
Date: Thurs, Feb 17 2011 11:39 pm
From: JR North

Replaced C635 10uf 250V . Monitor back up-runs fine. I know-a cap; big
deal. But since I'm not an electronics whiz kid, resurrecting this
thing 3 times since new makes me feel kinda good.
JR

== 2 of 2 ==
Date: Fri, Feb 18 2011 12:13 pm
From: "circuit"

Good going, but count on fixing it again someday for the same problem. There
is a repair kit out there to take care if it once and for all. Web search :
repair kit ARSCM769D

"JR North" <junkjasonrnorth@bigfoot.com> wrote in message
news:j98sl6tufm2l5gtc3dp0l2b9gh7f2prdkq@4ax.com...
> Replaced C635 10uf 250V . Monitor back up-runs fine. I know-a cap; big
> deal. But since I'm not an electronics whiz kid, resurrecting this
> thing 3 times since new makes me feel kinda good.
> JR

==============================================================================
TOPIC: EDC 521 DC calibrator blowing fuses
http://groups.google.com/group/sci.electronics.repair/t/5fd358d9fe0d0a0c?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 3:36 am
From: "Michael A. Terrell"

Dave Platt wrote:
>
> > I used to see 2W carbon comp resistors change values drastically all the
> > time in TEK 520 and 520A vectorscopes. I believe it's heat-related.
> > (it also might depend on how much V drop across them)
> >
> > They used to char the PCB even with a 1/2" standoff spacing and some even
> > dropped off the PCB.
>
> Sounds as if they used a bunch of recycled SWTPC Tigersaurus power
> amplifier PCBs to make those vectorscopes (or, possibly, a couple of
> recycled SWTPC designers).

Bullshit. Those vectorscopes were used at TV stations, where most
were on 24/7. The TV stations I've seen didn't have enough cooling for
the equipment racks. SWTPC crap would have burnt up in a week, or less.

--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.

==============================================================================
TOPIC: Radar detector/scrambler
http://groups.google.com/group/sci.electronics.repair/t/646f5661b2cfc1b7?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 3:38 am
From: "Michael A. Terrell"

Jim Yanik wrote:
>
> Jeff Liebermann <jeffl@cruzio.com> wrote in
> news:e8dpl61rq9e2phhlustatkkuhlmtu5eku8@4ax.com:
>
>
> > Ramsey Radar Gun:
> ><http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key
> >=SG7>
> >
> >
>
> I used to go to high school with John Ramsey;
> he used to make little "wireless microphones".

Did you ever see one of his 'Service Monitors' he sold to the pager
repair business?

--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.

==============================================================================
TOPIC: Lenovo T60 laptop Audio problem
http://groups.google.com/group/sci.electronics.repair/t/3930a2df810fd896?hl=en
==============================================================================

== 1 of 2 ==
Date: Fri, Feb 18 2011 3:50 am
From: "Michael A. Terrell"

kwamena banson wrote:
>
> I formated my childs Lenovo T60 laptop(May be an IBM machine) and i'm
> having problem with the sound. I tried loading it from the net but it
> will not just work. all other drivers from the net worked but the
> audio. I'm using Win XP Sp2. Help please. Thank you.

It is IBM. T60 is the series, not the model number.

<http://www.ibm.com/search/csass/search?sn=mh&q=t60&lang=en&cc=us&en=utf>

--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.

== 2 of 2 ==
Date: Fri, Feb 18 2011 4:27 am
From: Bob Villa

On Feb 17, 1:08 pm, kwamena banson <virginban...@gmail.com> wrote:
> I formated my childs Lenovo T60 laptop(May be an IBM machine) and i'm
> having problem with the sound. I tried loading it from the net but it
> will not just work. all other drivers from the net worked but the
> audio. I'm using Win XP Sp2. Help please. Thank you.

http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=migr-62855

==============================================================================
TOPIC: How to find semiconductor replacements?
http://groups.google.com/group/sci.electronics.repair/t/dcb181e80eb71a20?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 3:56 am
From: "Michael A. Terrell"

Charles wrote:
>
> JEDEC part numbers used to mean something for discrete devices, now they
> relate more to memory devices (ICs) and the like.
>
> JEDEC still suggests package outlines, but they appear to have backed off
> from other details that used to help repair technicians select reasonable
> replacements for solid state devices. The 1N, 2N, 3N system is now
> officially dead?
>
> Pro-electron seems to be hanging in there, in this regard.

http://www.nteinc.com for universal replacements. For OEM parts, use
Google to find stock, if available.

I can't believe that you don't know this, if you actually taught
electronics.

--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.

==============================================================================
TOPIC: Intels 1 billion mistake
http://groups.google.com/group/sci.electronics.repair/t/6d28be07e85250d5?hl=en
==============================================================================

== 1 of 4 ==
Date: Fri, Feb 18 2011 4:02 am
From: "Michael A. Terrell"

Allodoxaphobia wrote:
>
> On Wed, 16 Feb 2011 15:06:19 -0800, Joe wrote:
> > bob urz <sound@inetnebr.com> wrote:
> >>
> >> http://mbtmag.com/Content.aspx?id=1937
> >
> > Typical asinine reporting. There is *no date* on that article, Just
> > mentions of "Monday", "January" and "February" without even a mention of
> > *which year*.
> >
> > I guess we can all ASSume that the article is current, but what kind of
> > sucky publisher puts out "news" articles without a date?
> >
> > Oh wait, below the bottom of the article is the line
> >
> > "Copyright 2011 The Associated Press."
>
> Probably inserted by some PHP code using the current date of the 'view'.

Bullshit. The AP has always marked their news with a copyright
notice and the date. If they didn't, it wouldn't stand up in court.

Here is the raw article, with the AP copyright notice. Do you see
any PHP?

SANTA
CLARA, California (AP) — Intel Corp. on Monday said it has found
a design flaw in a recently released chip, and is working with laptop
makers to replace affected computers.
Sales lost while the company rushes out a replacement chip, and the
cost of replacing computers with the flawed chip, will cost the
company $1 billion, it said.
Intel said it's shipped 8 million of the defective chips, but
complete PCs with those chips have only been on sale since Jan. 9, so
"relatively few" of them have reached consumers. The main processing
chips in these computers are branded "Core i5" and "Core i7."
The affected chips aren't the main processors, which are based on
the so-called "Sandy Bridge" technology that Intel announced in
January, but a support chip. The flaw means it may degrade with use
over a period of months or years, slowing down the transfer of data to
and from the computer's hard drives and DVD drives.
Intel said consumers can "continue to use their systems with
confidence, while working with their computer manufacturer for a
permanent solution."

Intel shares slid 25 cents to $21.21 in early afternoon
trading.
The company said it has already started making a new version of the
support chip, and hopes to start delivering it to PC makers in late
February. While they wait for the new chip, production of computers
using Intel's "Sandy Bridge" chips will be on hold.
The delay will reduce revenue by about $300 million in the first
quarter, Intel said. It put the repair and replacement cost at $700
million.
Despite the setback, Intel raised its overall revenue outlook for
the first quarter because of the recent acquisition of the phone-chip
business of Infineon Technologies AG. It also expects to complete the
acquisition of McAfee by the end of the first quarter.
Intel now expects $11.7 billion in revenue in the first quarter,
plus or minus $400 million. Its prior outlook was for $11.5 billion,
plus or minus $400 million.
Intel also said it expects revenue to grow by a mid- to high teens
percentage in 2011. It previously expected a growth of about 10
percent.

The company said its gross margin — the profit made on each
sale, expressed as a percentage of overall revenue — will be
lower than its previous outlook as it will be taking a charge related
to the chip flaw.
Intel now expects its first-quarter gross margin to be 61 percent.
Its earlier outlook was for 64 percent.
For the full year, gross margin is now expected to be 63 percent,
compared to the previous expectation of 65 percent.
Shares of rival Advanced Micro Devices Inc. jumped 36 cents, or 4.8
percent, to $7.86 on the news. The stock has traded in the 52-week
range of $5.53 and $10.24.

Copyright 2011 The Associated Press.

--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.

== 2 of 4 ==
Date: Fri, Feb 18 2011 6:43 am
From: Allodoxaphobia

On Fri, 18 Feb 2011 07:02:26 -0500, Michael A. Terrell wrote:
> Allodoxaphobia wrote:
>> On Wed, 16 Feb 2011 15:06:19 -0800, Joe wrote:
>> > bob urz <sound@inetnebr.com> wrote:
>> >>
>> >> http://mbtmag.com/Content.aspx?id=1937
>> >
>> > Typical asinine reporting. There is *no date* on that article, Just
>> > mentions of "Monday", "January" and "February" without even a mention of
>> > *which year*.
>> >
>> > I guess we can all ASSume that the article is current, but what kind of
>> > sucky publisher puts out "news" articles without a date?
>> >
>> > Oh wait, below the bottom of the article is the line
>> >
>> > "Copyright 2011 The Associated Press."
>>
>> Probably inserted by some PHP code using the current date of the 'view'.
>
>
> Bullshit. The AP has always marked their news with a copyright
> notice and the date. If they didn't, it wouldn't stand up in court.
>
> Here is the raw article, with the AP copyright notice. Do you see
> any PHP?

<snicker> The client will _never_ see any PHP.

== 3 of 4 ==
Date: Fri, Feb 18 2011 7:17 am
From: "David"

"Allodoxaphobia" wrote in message
news:slrnilt1d8.30u1.knock_yourself_out@shell.config.com...

On Fri, 18 Feb 2011 07:02:26 -0500, Michael A. Terrell wrote:
> Allodoxaphobia wrote:
>> On Wed, 16 Feb 2011 15:06:19 -0800, Joe wrote:
>> > bob urz <sound@inetnebr.com> wrote:
>> >>
>> >> http://mbtmag.com/Content.aspx?id=1937
>> >
>> > Typical asinine reporting. There is *no date* on that
>> > article, Just
>> > mentions of "Monday", "January" and "February" without even
>> > a mention of
>> > *which year*.
>> >
>> > I guess we can all ASSume that the article is current, but
>> > what kind of
>> > sucky publisher puts out "news" articles without a date?
>> >
>> > Oh wait, below the bottom of the article is the line
>> >
>> > "Copyright 2011 The Associated Press."
>>
>> Probably inserted by some PHP code using the current date of
>> the 'view'.
>
>
> Bullshit. The AP has always marked their news with a
> copyright
> notice and the date. If they didn't, it wouldn't stand up in
> court.
>
> Here is the raw article, with the AP copyright notice. Do
> you see
> any PHP?

><snicker> The client will _never_ see any PHP.
Yes, The PHP is applied on the server side and what the client
sees as a web page is the processed page rather than the original
PHP code.

David

== 4 of 4 ==
Date: Fri, Feb 18 2011 10:15 am
From: "Michael A. Terrell"

David wrote:
>
> Yes, The PHP is applied on the server side and what the client
> sees as a web page is the processed page rather than the original
> PHP code.

Have you ever seen a raw newsfeed from the AP? I have, starting in
'73 as an engineer at a TV station. There was a copyright date on every
article. The only news service I've seen that didn't have one was the
military news wire that served Alaska.

--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.

==============================================================================
TOPIC: Arcam amp ...
http://groups.google.com/group/sci.electronics.repair/t/7cc228c388c21ebf?hl=en
==============================================================================

== 1 of 3 ==
Date: Fri, Feb 18 2011 4:32 am
From: "N_Cook"

Arfa Daily <arfa.daily@ntlworld.com> wrote in message
news:L9k7p.21313$Ga7.4781@newsfe16.ams2...
>
>
> "N_Cook" <diverse@tcp.co.uk> wrote in message
> news:ijjhae$8fn$1@news.eternal-september.org...
> > Arfa Daily <arfa.daily@ntlworld.com> wrote in message
> > news:uzc6p.13691$Ga7.9010@newsfe16.ams2...
> >> Anyone by any chance got schematics for an Arcam Alpha 10 amplifier ?
> >>
> >> TIA
> >>
> >> Arfa
> >
> >
> > Not motorized function sw prob I hope.
> >
> >
>
> No, it's not. But why do you ask, I wonder ? I did one of those on an
Alpha
> 9 just yesterday. It was no particular problem, as has been the case with
a
> few I've done in the past.
>
> Arfa
>

Too much back-torque with all those multiway wafers -> stripped plastic
gearbox cogs -> indexing/alignment problems

== 2 of 3 ==
Date: Fri, Feb 18 2011 5:08 am
From: Tim Schwartz

On 2/18/2011 7:32 AM, N_Cook wrote:
> Arfa Daily<arfa.daily@ntlworld.com> wrote in message
> news:L9k7p.21313$Ga7.4781@newsfe16.ams2...
>>
>>
>> "N_Cook"<diverse@tcp.co.uk> wrote in message
>> news:ijjhae$8fn$1@news.eternal-september.org...
>>> Arfa Daily<arfa.daily@ntlworld.com> wrote in message
>>> news:uzc6p.13691$Ga7.9010@newsfe16.ams2...
>>>> Anyone by any chance got schematics for an Arcam Alpha 10 amplifier ?
>>>>
>>>> TIA
>>>>
>>>> Arfa
>>>
>>>
>>> Not motorized function sw prob I hope.
>>>
>>>
>>
>> No, it's not. But why do you ask, I wonder ? I did one of those on an
> Alpha
>> 9 just yesterday. It was no particular problem, as has been the case with
> a
>> few I've done in the past.
>>
>> Arfa
>>
>
> Too much back-torque with all those multiway wafers -> stripped plastic
> gearbox cogs -> indexing/alignment problems
>
>
Funny,

I've done DOZENS of those Alps switches. They must be taken apart and
cleaned, as spraying them does not seem to last, but I've never had a
stripped gear drive.

Regards,
Tim Schwartz
Bristol Electronics

P.S. These switches were used in the Arcam Delta 290, Xeta 1 and Alpha
9 integrated amps, along with the Creek 5350 and some Yamaha products.
I'd guess along with many others I don't know about.

== 3 of 3 ==
Date: Fri, Feb 18 2011 6:47 am
From: "N_Cook"

Tim Schwartz <tim@bristolnj.com> wrote in message
news:4D5E6F6B.4000104@bristolnj.com...
> On 2/18/2011 7:32 AM, N_Cook wrote:
> > Arfa Daily<arfa.daily@ntlworld.com> wrote in message
> > news:L9k7p.21313$Ga7.4781@newsfe16.ams2...
> >>
> >>
> >> "N_Cook"<diverse@tcp.co.uk> wrote in message
> >> news:ijjhae$8fn$1@news.eternal-september.org...
> >>> Arfa Daily<arfa.daily@ntlworld.com> wrote in message
> >>> news:uzc6p.13691$Ga7.9010@newsfe16.ams2...
> >>>> Anyone by any chance got schematics for an Arcam Alpha 10 amplifier ?
> >>>>
> >>>> TIA
> >>>>
> >>>> Arfa
> >>>
> >>>
> >>> Not motorized function sw prob I hope.
> >>>
> >>>
> >>
> >> No, it's not. But why do you ask, I wonder ? I did one of those on an
> > Alpha
> >> 9 just yesterday. It was no particular problem, as has been the case
with
> > a
> >> few I've done in the past.
> >>
> >> Arfa
> >>
> >
> > Too much back-torque with all those multiway wafers -> stripped plastic
> > gearbox cogs -> indexing/alignment problems
> >
> >
> Funny,
>
> I've done DOZENS of those Alps switches. They must be taken apart and
> cleaned, as spraying them does not seem to last, but I've never had a
> stripped gear drive.
>
> Regards,
> Tim Schwartz
> Bristol Electronics
>
> P.S. These switches were used in the Arcam Delta 290, Xeta 1 and Alpha
> 9 integrated amps, along with the Creek 5350 and some Yamaha products.
> I'd guess along with many others I don't know about.

There is a "weak link" , sprung loaded slotted axle support in the drive .
Intermittently disengages motor if excessive back torque/jammed , then will
mess up the tiny pinion if left in that state, clicking away to itself while
the owner sleeps through it. Does
not make as much noise as a Dyson slip clutch/ football rattle, you could
not sleep through that.

==============================================================================
TOPIC: Nikko Alpha 220
http://groups.google.com/group/sci.electronics.repair/t/6d4cff546b52714e?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 5:11 am
From: Tim Schwartz

On 2/17/2011 8:03 PM, Mark Zacharias wrote:
> "Tim Schwartz" <tim@bristolnj.com> wrote in message
> news:ijji70$gam$1@news.eternal-september.org...
>> Hello all,
>>
>> I've got a Nikko Alpha 220 power amp here, and need to know the value
>> of R751/752/753/754. I'm pretty sure they are all the same value. If
>> someone has a service manual or schematic to share, that would be
>> terrific too.
>>
>> Regards,
>> Tim Schwartz
>> Bristol Electronics
>
>
> Eserviceinfo.com has a 440 manual - maybe that is similar?
>
> Mark Z.
Thanks Mark,

I'll wait a few days to see if anyone else has a print, and then I'll
try them.

Regards,
Tim Schwartz
Bristol Electronics

==============================================================================
TOPIC: HOLLYWOOD ACTRESS SEXY VIDEOS AND ROMANTIC PICTURES HERE
http://groups.google.com/group/sci.electronics.repair/t/6c07f542054e3c68?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 5:15 am
From: cinema

http://love4indianpeople.blogspot.com/

==============================================================================
TOPIC: Sony HVR-V1U Camcorder
http://groups.google.com/group/sci.electronics.repair/t/bc58e27e5f96f9dd?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 8:02 am
From: "Electman"

Hello All,

Received the above camera in for service, and took care of the mechanical
problems. Performing the alignments is something I've always done, as I have
all the jigs and software/ hardware... However, the one thing I'm missing are
the latest bulletins.

The problem is, I can't reset the hour meter. I've tried several times, and
like I said, I can do all the alignments, so I know how to use the remote and
follow directions in the manual. After turning blue, I pulled another V1U off
the shelf and tried to reset the drum hours and to my surprise, it wouldn't
hold either! I mean, you can go through the motions, but when you turn power
off and back on, the old data is still there!

There has to be a bulletin on this issue.. I'm pulling my hair out over here.
Can someone help me, please?

*** It's been a very long time since I've posted here - several years, in
fact. When I did have problems and needed help, there were always kind folks
out there that would give a hand, and for this I am grateful. Thank you!***

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

==============================================================================
TOPIC: Tube Amp 6L6GC Valve Peavey Mace VT Guitar Amplifier
http://groups.google.com/group/sci.electronics.repair/t/9ad57064b3ab9e7f?hl=en
==============================================================================

== 1 of 2 ==
Date: Fri, Feb 18 2011 9:20 am
From: Meat Plow

On Fri, 18 Feb 2011 12:05:37 +1100, Phil Allison wrote:

> "Meat Plow the FUCKWIT "
>>
>>>> Could refit with two EL34s.
>>>
>>> ** Make any issues worse not better.
>>>
>>>> My Musicman 112 combo uses a pair of Mullards at around 700v plate.
>>>
>>> ** And only half that voltage on the screens.
>>>
>>> Not relevant at all - fuckhead.
>>
>> It's very relevant,
>
> ** Get stuffed.

You first

>> Any moron knows you wouldn't
>> just drop a pair of EL34s in without some slight modification.
>
>
> ** Total red herring.

"Could refit with two EL34s"

Red Herring straw man burned at the stake.

--
Live Fast, Die Young and Leave a Pretty Corpse

== 2 of 2 ==
Date: Fri, Feb 18 2011 1:47 pm
From: "Phil Allison"

"Meat Plow"

> Could refit with two EL34s.

** Make any issues worse not better.

> My Musicman 112 combo uses a pair of Mullards
> at around 700v plate.

** And only half that voltage on the screens.

Not relevant at all - fuckhead.

No you post something that MAKES SENSE.

Surprise me.

.... Phil

==============================================================================
TOPIC: 30 GB Video IPod redux
http://groups.google.com/group/sci.electronics.repair/t/a8cdcbc5c8be1933?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 9:29 am
From: Meat Plow

Ok the display is backlit with 4 LEDs at the bottom. Behind the LCD
there is a light diffuser/spreader whatever you want to call it. It's a
static component just there to spread the light from the light source
evenly behind the LCD. Obviously this was damaged somehow, probably
dropped although the former owner would not admit it and the IPod has no
apparent damage to the case. Behind the light "spreader" there is a
reflective piece of something. It's not totally opaque because I can
shine a strong light through it and see the damage on the LCD side with
the display unplugged. So this is a simple matter of replacing the
display This particular model has five latches on each side, two on the
bottom and one on the top.

--
Live Fast, Die Young and Leave a Pretty Corpse

==============================================================================
TOPIC: The common ThinkPad powerup problem
http://groups.google.com/group/sci.electronics.repair/t/9730825a5202a5fd?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 9:44 am
From: all2001@spambog.com (Wolfgang Allinger)

On 17 Feb 11 at group /sci/electronics/repair in article
<email@here.invalid> (Adrian C) wrote:

Hi Adrian,

>I have a schematic for the similar T23 I could mail you.

please ship me a copy to xyzzy46@gmail.com
I own a T21 with a dead display.

THX

Saludos Wolfgang

--
Meine 7 Sinne:
Unsinn, Schwachsinn, Bl�dsinn, Wahnsinn, Stumpfsinn, Irrsinn, L�tzinn.
Wolfgang Allinger Paraguay reply Adresse gesetzt !
ca. 15h00..21h00 MEZ SKYPE:wolfgang.allinger

==============================================================================
TOPIC: Adult only
http://groups.google.com/group/sci.electronics.repair/t/c60aa61622bbd752?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 12:21 pm
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==============================================================================
TOPIC: JEDEC for technicians
http://groups.google.com/group/sci.electronics.repair/t/6b63cbb506945c94?hl=en
==============================================================================

== 1 of 2 ==
Date: Fri, Feb 18 2011 2:08 pm
From: "Charles"

JEDEC seems to be into memory specs these days and no longer into basic
semiconductor devices.

There was a time when JEDEC and PRO ELECTRON held some sway over part
numbers and such. JEDEC seems to still be into semiconductor device package
standards, however.

4N and 6N part numbers are out there. They seem to be beyond the old JEDEC
system and relate to opto-couplers.

Is there an expanded/updated version of the 1N, 2N, 3N JEDEC system?

== 2 of 2 ==
Date: Fri, Feb 18 2011 2:34 pm
From: "Phil Allison"

"Charles is Off with the Fairies "

> JEDEC seems to be into memory specs these days and no longer into basic
> semiconductor devices.
>
> There was a time when JEDEC and PRO ELECTRON held some sway over part
> numbers and such. JEDEC seems to still be into semiconductor device
> package standards, however.
>
> 4N and 6N part numbers are out there. They seem to be beyond the old
> JEDEC system and relate to opto-couplers.
>
> Is there an expanded/updated version of the 1N, 2N, 3N JEDEC system?

** Wot is this loon on about ?

The JEDEC device numbering system was of benefit only to manufacturers.

A 2Nxxxx number could be a transistor of either polarity, a J-FET or a
bloody triac!!!

..... Phil

==============================================================================
TOPIC: A source of information?
http://groups.google.com/group/sci.electronics.repair/t/3dd64f43f159e14f?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Feb 18 2011 3:46 pm
From: "Charles"

http://www.electronics-radio.com/articles/electronic_components/transistor/transistor_codes/transistor_numbering.php

Hard to decipher some semiconductor part numbers, these days.

1N, 2N, 3N devices are well defined but 4N and 5N and 6N parts were never?
defined. Does anybody out there actually know if the old JEDEC standard was
dropped, or usurped, or has it just faded into the past? I cannot find a
JEDEC reference to a 6Nxxx optocoupler.

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