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

sci.electronics.repair@googlegroups.com

Today's topics:

* I bought a Moto G from Motorola, and it doesn't come with a CHARGER! - 13
messages, 6 authors
http://groups.google.com/group/sci.electronics.repair/t/a656ae396ed31d8e?hl=en
* Centronix gender? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/11a01a13e1df3c26?hl=en
* Lionel train question - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/96607f75fdffab21?hl=en
* HP Laserjet 4000 paper jam and other issues. - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/8620b1cad620b4b9?hl=en
* Root cause insight into the common BMW blower motor resistor failures - 3
messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/b6c594f4d879a6b1?hl=en
* How to properly feed GPS navigation prompts into a bluetooth earpiece? - 1
messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/ff70bbb8288b005e?hl=en
* How do I get Voice-to-Text back in my Android 4.3 for SMS texting? - 2
messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/73bd95f6d9063aaf?hl=en
* Liteon LVW-5025GHC+ (format HDD). - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/ca6a6668d09046a3?hl=en
* Trying to understand the current draw of a Samsung Galaxy S3 under GPS & low
battery - 2 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/1dceb0f9a68c6f2d?hl=en

==============================================================================
TOPIC: I bought a Moto G from Motorola, and it doesn't come with a CHARGER!
http://groups.google.com/group/sci.electronics.repair/t/a656ae396ed31d8e?hl=en
==============================================================================

== 1 of 13 ==
Date: Tues, Feb 4 2014 10:51 am
From: "s|b"


On Tue, 4 Feb 2014 06:32:44 +0000 (UTC), Cordell James wrote:

> Now I have to buy a charger.
> But, which 5V USB charger do I buy?

Just stick in a USB-port on your computer. It'll charge. (You /do/ have
a computer, don't you? ;-)

--
s|b




== 2 of 13 ==
Date: Tues, Feb 4 2014 5:28 pm
From: Jeff Liebermann


On Tue, 4 Feb 2014 06:32:44 +0000 (UTC), Cordell James
<cordell.james@gmail.com> wrote:

>Have any of you bought the $200 Moto G smartphone?

Slow processor, 16GB maximum memory, no LTE, a crappy camera that
takes blurry photos, and a low contrast screen. However, it is cheap,
taudio is good, cellular range so-so, and it's well built.

>Did yours come with a charger?
>If not, what size charger do we need to buy?

The EU has decided that there should be exactly one standard charger.
<http://en.wikipedia.org/wiki/Common_External_Power_Supply>
Since you're expected to have exactly one charger for a wide
assortment of devices, the various vendors see no reason to supply you
with a spare charger. I consider this a good idea.
<http://sneezypb.tumblr.com/post/15864266395/one-day-son-all-of-these-perfectly-good-a-c>

>My 16GB Moto G came from Motorola (not from Google Play)
>and it arrived only with a white USB cable. There is no
>charger! That stinks!

I feel your pain. However, I don't think a $5-$10 charger on eBay or
Amazon will constitute a major investment.

>Now I have to buy a charger.

Yep.

>But, which 5V USB charger do I buy?

MicroUSB. If it has a USB connector, make sure it says for Android or
Non-Apple products. Most "universal" chargers with USB connectors
have two connectors. One for Apple, and one for everything else.

>Nowhere in the package does it say the amps needed.

<https://community.republicwireless.com/thread/17308>
<http://www.wirelessground.com/motorola-dual-port-usb-charger-with-cable.html>

--
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




== 3 of 13 ==
Date: Tues, Feb 4 2014 5:39 pm
From: Oren


On Tue, 04 Feb 2014 19:51:11 +0100, "s|b" <me@privacy.invalid> wrote:

>On Tue, 4 Feb 2014 06:32:44 +0000 (UTC), Cordell James wrote:
>
>> Now I have to buy a charger.
>> But, which 5V USB charger do I buy?
>
>Just stick in a USB-port on your computer. It'll charge. (You /do/ have
>a computer, don't you? ;-)

I just bought a cordless drill. Unknown to me at the time, found out
on delivery, the battery charger has a USB port that will charge a
cell phone. Haven't tried the USB port yet, though.




== 4 of 13 ==
Date: Tues, Feb 4 2014 9:14 pm
From: Michael Black


On Tue, 4 Feb 2014, Jeff Liebermann wrote:

> On Tue, 4 Feb 2014 06:32:44 +0000 (UTC), Cordell James
> <cordell.james@gmail.com> wrote:
>
>> Have any of you bought the $200 Moto G smartphone?
>
> Slow processor, 16GB maximum memory, no LTE, a crappy camera that
> takes blurry photos, and a low contrast screen. However, it is cheap,
> taudio is good, cellular range so-so, and it's well built.
>
>> Did yours come with a charger?
>> If not, what size charger do we need to buy?
>
> The EU has decided that there should be exactly one standard charger.
> <http://en.wikipedia.org/wiki/Common_External_Power_Supply>
> Since you're expected to have exactly one charger for a wide
> assortment of devices, the various vendors see no reason to supply you
> with a spare charger. I consider this a good idea.
> <http://sneezypb.tumblr.com/post/15864266395/one-day-son-all-of-these-perfectly-good-a-c>
>
>> My 16GB Moto G came from Motorola (not from Google Play)
>> and it arrived only with a white USB cable. There is no
>> charger! That stinks!
>
> I feel your pain. However, I don't think a $5-$10 charger on eBay or
> Amazon will constitute a major investment.
>
More devices are coming this way. My four year old Sansa Fuze just came
with a cable, no AC adapter. When I got a Kobo Mini ebook reader last
year, it only came with a cable.

But you don't need to spend much. When I got a used TomTom One GPS
receiver at a Rotary Club garage sale last June, I immediately picked up a
couple of suitable AC adapters at garage sales, one for 25cents, one for
fifty cents. The fact that they are now standardizing on a USB type
connector does make it simpler. No need to dig through the box of
adapters to find one that has the right voltage, and then chances are good
the connector is the wrong size and/or the polarity is wrong for the
device. I already had some suitable USB type ac adapters from finding in
th garbage, but it was easier to buy those that day than dig through the
box.

Maybe people won't even need to buy at 50cent level, they can ask family
or friends if they have any lying around (and they may).

Michael




== 5 of 13 ==
Date: Thurs, Feb 6 2014 7:15 am
From: Danny D'Amico


On Tue, 04 Feb 2014 17:28:30 -0800, Jeff Liebermann wrote:

> The EU has decided that there should be exactly one standard charger.
> <http://en.wikipedia.org/wiki/Common_External_Power_Supply>

Hi Jeff,
I myself recently purchased the Moto G, so this is useful information.
http://farm6.staticflickr.com/5541/12344729295_b954a7ec30_o.gif

In point of fact, I read with interest everything you post, and after
reading your reference, one sentence struck me as particularly useful
with respect to what comes with the Moto G by default:
"A common EPS must include a cable with a Micro USB-B connector
for connecting to a mobile phone."

So, *that* explains why the Motorola Google Moto-G, which we know
does not come with a charger, at least comes with a USB cable!

PS: I've been clamoring for a common-charge standard since USB was
invented! I never bought an earbud, phones, cameras, GPS, etc. that
wasn't common (mini-USB in those days). People used to make fun of
me, but, now they're reaping the benefits of the idea that we really
don't need to have a separate charger format & connector for every
device.





== 6 of 13 ==
Date: Thurs, Feb 6 2014 7:18 am
From: Danny D'Amico


On Tue, 04 Feb 2014 15:15:26 +0000, Amanda Williams wrote:

> Yeah any micro-usb charger will do... I use the same charger for my phone
> and my tablet... it was originally a charger for an old long deceased
> phone

Not really but close enough.
The moto g specs say 1amp to 1.5 amp, IIRC.

That's *high* current for most chargers, which are usually, in my
experience anyway, about 500ma to about 800ma.

So, in *my* experience, *most* chargers don't meet the moto-g spec,
if the spec indeed is 1 amp and above.

And, certainly, you're not going to get a 1.5Amp charger for 3 bucks
as someone here had proposed. If you can, please post the URL to the
site and I'll buy a dozen! :)




== 7 of 13 ==
Date: Thurs, Feb 6 2014 7:19 am
From: Danny D'Amico


On Tue, 04 Feb 2014 08:18:08 -0700, Tony Hwang wrote:

> Won't it charge thru USB port? My laptop has feature to
> boost USB output current to charge many different things
> on USB port. Also There is Car DC 12V to USB charger you
> can buy.

Yes. But if the Moto-G spec is really 1 amp to 1.5 amp
recommended charger capability, the real question is
whether your laptop and car adapter can meet the current
spec for the Moto G.





== 8 of 13 ==
Date: Thurs, Feb 6 2014 7:59 am
From: Jeff Liebermann


On Thu, 6 Feb 2014 15:15:59 +0000 (UTC), Danny D'Amico
<danny@is.invalid> wrote:

>On Tue, 04 Feb 2014 17:28:30 -0800, Jeff Liebermann wrote:
>
>> The EU has decided that there should be exactly one standard charger.
>> <http://en.wikipedia.org/wiki/Common_External_Power_Supply>

>Hi Jeff,
>I myself recently purchased the Moto G, so this is useful information.
> http://farm6.staticflickr.com/5541/12344729295_b954a7ec30_o.gif
>
>In point of fact, I read with interest everything you post, and after
>reading your reference, one sentence struck me as particularly useful
>with respect to what comes with the Moto G by default:
> "A common EPS must include a cable with a Micro USB-B connector
> for connecting to a mobile phone."
>
>So, *that* explains why the Motorola Google Moto-G, which we know
>does not come with a charger, at least comes with a USB cable!
>
>PS: I've been clamoring for a common-charge standard since USB was
>invented! I never bought an earbud, phones, cameras, GPS, etc. that
>wasn't common (mini-USB in those days). People used to make fun of
>me, but, now they're reaping the benefits of the idea that we really
>don't need to have a separate charger format & connector for every
>device.

Your nightmare has only just begun. It's not quite a neat as it could
have been.
<http://blog.curioussystem.com/2010/08/the-dirty-truth-about-usb-device-charging/>
<http://www.instructables.com/id/Modify-a-cheap-USB-charger-to-feed-an-iPod-iPhone/>
Apple and the rest of the industry have gone separate ways in their
methods of negotiating the proper charging current. The result is
that you'll find chargers with two USB connectors, labeled Apple, and
everyone else. Also note the 3.1A charging current:
<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=331119653295>

Since Apple chose to release it's iPhone 5 with a non EU standard
connector and charging system, one would have expected a reaction from
the standards manufacturers in Brussels. Note that there is no law
demanding that standard chargers be used. Well, it took about a year,
but it finally arrived:
<http://www.theinquirer.net/inquirer/news/2297365/eu-announces-compulsory-common-charger-standard>
Yawn.

Apple... think different, very different:
<https://www.google.com/search?q=apple+different&tbm=isch>

--
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




== 9 of 13 ==
Date: Thurs, Feb 6 2014 8:55 am
From: Leviatan


A Danny D'Amico se le ha ocurrido que:

> Yes. But if the Moto-G spec is really 1 amp to 1.5 amp
> recommended charger capability, the real question is
> whether your laptop and car adapter can meet the current
> spec for the Moto G.

Linear or switched voltage regulators, as the ones used in phone
chargers, are mostly self current limiting, so there is no risk, just
that moto-G will tabe a bit longer to charge.

--
Un saludo,
Alberto






== 10 of 13 ==
Date: Thurs, Feb 6 2014 9:00 am
From: Danny D'Amico


On Thu, 06 Feb 2014 07:59:10 -0800, Jeff Liebermann wrote:

> It's not quite a neat as it could have been.

Hi Jeff,
You picked an EXCELLENT article to read!

That article was interesting in that it explained the Chinese standard,
the EU standard, and the Apple standard of USB charging circuits:
http://blog.curioussystem.com/2010/08/the-dirty-truth-about-usb-device-charging/

It was interesting that apple used voltages for their charging circuitry:
- low current: 2.8 volts across Data(+)
- high current: 2.0 volts across Data(-)

While the Chinese used shorts, and the EU used a resistor.

The five 1/8 watt resistor "hybrid" circuit in that article nicely explains how
a charger can work *either* for Apple (voltage) & EU (resistance) & Chinese
(short) charge circuits; but not all three at the same time!

:(











== 11 of 13 ==
Date: Thurs, Feb 6 2014 9:07 am
From: Danny D'Amico


On Thu, 06 Feb 2014 17:55:55 +0100, Leviatan wrote:

> Linear or switched voltage regulators, as the ones used in phone chargers,
> are mostly self current limiting, so there is no risk, just that moto-G
> will tabe a bit longer to charge.

I understood that the risk of the Moto-G sinking too much current is
minimal (since I assumed it had current-limiting circuitry to prevent
battery overcharging).

However, if the Moto-G takes, say, 1 Amp to just run whatever is running
on it (admittedly high, but this is just a worst-case scenario), and if
the USB port is only a typical 500mA port, then the battery will slowly
discharge.

In practice, if you're charging your Moto-G, most of the time you're not
also using it, except in the case of GPS and bluetooth and dashcams which
is what you'd be using in a car.

So, the key problem is that the *car* charger has to be beefy just to
keep up with the demands of the phone, and not just those of the battery.

PS: I'm debugging exactly that problem on my Samsung Galaxy S3 as we speak.





== 12 of 13 ==
Date: Thurs, Feb 6 2014 9:18 am
From: Danny D'Amico


On Thu, 06 Feb 2014 07:59:10 -0800, Jeff Liebermann wrote:

> Your nightmare has only just begun.

Hi Jeff,

While I abhor needlessly-multi-page howto articles, I read your reference:
http://instructables.com/id/Modify-a-cheap-USB-charger-to-feed-an-iPod-iPhone

What I learned was, for the Apple USB charging standard:
a) 2.0 V on D+ and 2.0 V on D- puts out 500 mA on the power pins
b) 2.0 V on D+ and 2.8 V on D- puts out 1 A on the power pins

It was also interesting that the author chose 220 Ohm & 330 Ohm resistors
because the ratio is what matters, more so than the resistance itself.

What I learned from this is to make sure that I buy a charger that is
to the EU or Chinese standard, and not to the Apple standard.

Also, I realized, from this article, that I *probably* could convert
my dual port chargers from having one port at 1.0 A and another at 2.1 A,
to both ports being at 2.1A, but, that's just a hunch at this point.





== 13 of 13 ==
Date: Thurs, Feb 6 2014 9:26 am
From: Danny D'Amico


On Thu, 06 Feb 2014 07:59:10 -0800, Jeff Liebermann wrote:

> Also note the 3.1A charging current:
> <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=331119653295>

I couldn't figure out what the "N/A" meant, versus the "A" on
that device, but, I do agree, 3.1 Amps on each port simultaneously
is six amps of power (if it really can do that) out of a cigarette
lighter socket!






==============================================================================
TOPIC: Centronix gender?
http://groups.google.com/group/sci.electronics.repair/t/11a01a13e1df3c26?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Feb 4 2014 2:04 pm
From: "Michael A. Terrell"



Cydrome Leader wrote:
>
> I hate molex connectors for this reason. The phase of the moon will make a
> the pins and shells go out of aligmment and then somebody force it,
> leaving it broken for the next use. I'm surprised there isn't some $450
> tool to pull the pins or shells back into the connector housing.


I've seen a lot of fake Molex connectors in PCs. Their logo was
missing on the shell, and the contacts.





==============================================================================
TOPIC: Lionel train question
http://groups.google.com/group/sci.electronics.repair/t/96607f75fdffab21?hl=en
==============================================================================

== 1 of 2 ==
Date: Tues, Feb 4 2014 4:41 pm
From: "Maynard A. Philbrook Jr."


In article <3f68bc9d-b391-4402-81f1-69ab37f63da1@googlegroups.com>,
captainvideo462009@gmail.com says...
> I subsequently found a larger transformer at another yard sale which is able to handle the current required to run the AC motor in he engine, but there is no whistle provision. I've set the train up in the play room temporarily with the larger transformer but it would really be nice if my 4 year old grandson could hear the whistle blow. Is it possible when the whistle is blown that the DC is being placed in series with the AC? Sounds crazy but I never tried that. This
couldn't be very complicated. What am I missing here? Thanks, Lenny
>
>

Yes, It's been far too long :)

you have a normally closed momentary switch across a
DIODE that is in line with your AC doing to the tracks.
Or One could use a knife switch like was done back then!

The motor in the engine should be a universal type, which
means it'll operate on either or. But the whistle is DC only..

I also seem to remember there was a polarity requirement and
different tricks were used operating different DC items on the engine.

Smoke and noise.! Make sure you use appropriate diode and put a
snubber circuit across it, otherwise Mr L could get angry and fully
collapse on you at the wrong time!

Jamie





== 2 of 2 ==
Date: Thurs, Feb 6 2014 8:09 am
From: captainvideo462009@gmail.com


I like the idea of a diode with a NC switch across it. I'd like to try that one first. Regarding snubber circuits, I have used them in the past across arcing contacts in AC switching equipment. A typical configuration was a .50 ohm wirewound resistor in series with a .10uf cap. What was it you were thinking of for across the diode? Lenny





==============================================================================
TOPIC: HP Laserjet 4000 paper jam and other issues.
http://groups.google.com/group/sci.electronics.repair/t/8620b1cad620b4b9?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Feb 4 2014 5:09 pm
From: Jeff Liebermann


On Tue, 4 Feb 2014 01:24:19 -0800, "David Farber"
<farberbear.unspam@aol.com> wrote:

>I did clean (though probably not well enough) the sticky stuff off of the
>solenoid which is used to control the lower "D" rollers. I used some
>electrical tape as was suggested in the fix. Is the purpose of the felt or
>electrical tape to muffle the sound when the solenoid is energized or is
>there a mechanical reason as well? I'll take it out again, put some dc on
>it, and see how it operates. I'll also replace the rubber parts.

Don't use electrical tape. My original version of the fix indicated
to use 2 layers of electrical tape. That worked for about 3 months,
when the tape got warm and fell off. I had to rework about 8 printers
where I had used tape. The felt has lasted much longer.

There are various thicknesses of felt available at the local hardware
store. The stuff in the photo is 2mm thick (including the backing
paper and NOT compressed). I also have some felt that's about 1mm
thick. Both work just fine but I would NOT go any thicker than 2mm.

The main purpose of the felt to reduce the sound, but it also may have
a secondary purpose. Running the solenoids off DC tends to magnetize
the cores. If the armature comes in contact with the core, it will
stick. See video at:
<http://www.learnbydestroying.com/jeffl/crud/hp2200-solenoid.wmv>
The felt provides the necessary air gap so that the armature doesn't
stick.

If replacing all the rubber parts and fixing the sticky solenoid
doesn't do the trick, there are some obscure problems that should be
investigates. The clutch that runs the feed roller (the one above the
paper tray) gets dirty and doesn't release. Tear it apart, clean out
the metal dust, and it should be ok. Another common problem is a
sticky paper height sensor. That's also above the tray. Clean with a
paint brush.

Good luck.
--
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: Root cause insight into the common BMW blower motor resistor failures
http://groups.google.com/group/sci.electronics.repair/t/b6c594f4d879a6b1?hl=en
==============================================================================

== 1 of 3 ==
Date: Tues, Feb 4 2014 7:24 pm
From: "WW"




"Bimmer Owner" wrote in message news:kisqep$jpd$2@news.albasani.net...

On Tue, 26 Mar 2013 09:43:58 -0700, trader4@optonline.net wrote:

> They do have that 16 pin chip there, doing something.
> It might receive the command and then output the appropriate PWM for
> rest of the circuit.

Someone had scoped the whole board, and it was DC voltage everywhere
(according to that reference). It's pretty clear there is no PWM.

The 16-pin surface mount chip seems to be a automotive temperature
compensated voltage regulator with a huge voltage range, according
to a lookup of the part number on it.

Here is the Elmos 10901D chip of my FSU as I cut it open today.
http://www4.picturepush.com/photo/a/12515632/img/12515632.jpg

I wish there was a way to get rid of that heavy fibrous plastic goop!
(What is that black fibrous tough stuff anyway?)

I have had good luck removing the stuff used on motorcycle voltage
regulators that were potted soaking in MEK Methyl ethyl ketone
(spelling?). Potent stuff. Use outdoors and keep your hands out of it. WW





== 2 of 3 ==
Date: Tues, Feb 4 2014 8:09 pm
From: "Ralph Mowery"



"WW" <ccco@nospambresnan.net> wrote in message
news:SvmdnW2SXJ10M2zPnZ2dnUVZ_tednZ2d@bresnan.com...
>
> I have had good luck removing the stuff used on motorcycle voltage
> regulators that were potted soaking in MEK Methyl ethyl ketone
> (spelling?). Potent stuff. Use outdoors and keep your hands out of it.
> WW

I don't know what it actually is but at work we desolved a potted firing
system for a boat motor with something called OCP. Really stinks. Don't
think I would want it in a car after it was used.



---
This email is free from viruses and malware because avast! Antivirus protection is active.
http://www.avast.com





== 3 of 3 ==
Date: Wed, Feb 5 2014 12:16 pm
From: Paul Drahn


On 2/4/2014 8:09 PM, Ralph Mowery wrote:
> "WW"<ccco@nospambresnan.net> wrote in message
> news:SvmdnW2SXJ10M2zPnZ2dnUVZ_tednZ2d@bresnan.com...
>>
>> I have had good luck removing the stuff used on motorcycle voltage
>> regulators that were potted soaking in MEK Methyl ethyl ketone
>> (spelling?). Potent stuff. Use outdoors and keep your hands out of it.
>> WW
>
> I don't know what it actually is but at work we desolved a potted firing
> system for a boat motor with something called OCP. Really stinks. Don't
> think I would want it in a car after it was used.
>
>
>
> ---
> This email is free from viruses and malware because avast! Antivirus protection is active.
> http://www.avast.com
>
My electronic assembly company built the electronic control unit for BMC
Chopper of Bend, Oregon. Now defunked. We used two-part black epoxy that
took 24 hours to completely cure. When applied it was water thin. Had to
prep the box with RTV to keep the potting from running out around the
connectors.

Paul





==============================================================================
TOPIC: How to properly feed GPS navigation prompts into a bluetooth earpiece?
http://groups.google.com/group/sci.electronics.repair/t/ff70bbb8288b005e?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, Feb 6 2014 7:31 am
From: Danny D'Amico


Can someone explain how to force GPS navigation into my bluetooth earpiece?

I don't understand why BT GPS Naviation works for my bluetooth speaker,
but it doesn't work for my bluetooth earpiece.

Debugging on my Samsung Galaxy S3, I see something strange (to me):
http://farm8.staticflickr.com/7402/12344497644_7135787e7b_o.png

What I found, is there are (apparently?) two different kinds of BT!
a) Motorola Roadster (*connected to phone and media audio*)
b) Samsung HM1300 (*connected to phone audio*)

Hmmmmmm......
Are there two *different* kinds of bluetooth audio (media & phone)?

If that is the problem, how do I get the right kind of GPS audio into my
bluetooth earpiece just like it does with my bluetooth visor speaker?






==============================================================================
TOPIC: How do I get Voice-to-Text back in my Android 4.3 for SMS texting?
http://groups.google.com/group/sci.electronics.repair/t/73bd95f6d9063aaf?hl=en
==============================================================================

== 1 of 2 ==
Date: Thurs, Feb 6 2014 7:43 am
From: Danny D'Amico


All of a sudden, I lost the little microphone icon in my default SMS
text application on the T-Mobile Samsung Galaxy S3 on Android 4.3.
http://farm8.staticflickr.com/7373/12344496284_046d7946d1_o.png

This is an important omission, since I do offline speech-to-text
SMS text messages (I almost never use my fat fingers to text).

To get back that offline microphone app, I suspect I need to *install*
something, because it *was* there from the beginning - but now it's
(suddenly) gone!

But what free app do I download to get *back* that little microphone?





== 2 of 2 ==
Date: Thurs, Feb 6 2014 9:12 am
From: jurb6006@gmail.com


I don't know if this applies to you but a friend of mine said he had that for a time and later found out it was only a free trial and then they wantted money. He no longer has it.





==============================================================================
TOPIC: Liteon LVW-5025GHC+ (format HDD).
http://groups.google.com/group/sci.electronics.repair/t/ca6a6668d09046a3?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, Feb 6 2014 8:49 am
From: "Ian Field"


Does anyone know how to invoke format HDD on this PVR?

This model is only 80Gb - I have a 160Gb available that could go in it.

Thanks.





==============================================================================
TOPIC: Trying to understand the current draw of a Samsung Galaxy S3 under GPS &
low battery
http://groups.google.com/group/sci.electronics.repair/t/1dceb0f9a68c6f2d?hl=en
==============================================================================

== 1 of 2 ==
Date: Thurs, Feb 6 2014 9:02 am
From: Danny D'Amico


This article was pointed out to me by Jeff L. and it is interesting in that it
explained the Chinese standard, the EU standard, and the Apple standard of USB
charging circuits:
http://blog.curioussystem.com/2010/08/the-dirty-truth-about-usb-device-charging/

Apple, being different, used voltages for their charging circuitry:
- low current: 2.8 volts across Data(+)
- high current: 2.0 volts across Data(-)

The EU used a 1/8W 200 ohm resistor, & the Chinese simply short the data pins.

The five 1/8 watt resistor "hybrid" circuit in that article nicely explains how
a USB charger can work *either* for Apple (voltage) or EU (resistance) or
Chinese (short) charge circuits; but not all three at the same time!




== 2 of 2 ==
Date: Thurs, Feb 6 2014 9:21 am
From: Danny D'Amico


Another related article that Jeff L. pointed out today was this:
http://instructables.com/id/Modify-a-cheap-USB-charger-to-feed-an-iPod-iPhone

That article nicely further explains the Apple charging standard:
a) 2.0 V on D+ & 2.0 V on D- tells the Apple device it's a 500 mA port
b) 2.0 V on D+ & 2.8 V on D- tells the Apple device it's a 1 A port




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

You received this message because you are subscribed to the Google Groups "sci.electronics.repair"
group.

To post to this group, visit http://groups.google.com/group/sci.electronics.repair?hl=en

To unsubscribe from this group, send email to sci.electronics.repair+unsubscribe@googlegroups.com

To change the way you get mail from this group, visit:
http://groups.google.com/group/sci.electronics.repair/subscribe?hl=en

To report abuse, send email explaining the problem to abuse@googlegroups.com

==============================================================================
Google Groups: http://groups.google.com/?hl=en