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

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Today's topics:

* FUCK OFF Liebermann NUT CASE - 14 messages, 6 authors
http://groups.google.com/group/sci.electronics.repair/t/c90e1a6c9dfca321?hl=en
* Open SSID for HP printers - 4 messages, 4 authors
http://groups.google.com/group/sci.electronics.repair/t/2f0e2aeceb0c71fd?hl=en
* Test post for Termey - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/75f33cf051c5534b?hl=en
* Request test jig suggestion for microUSB phone charging current - 7 messages,
5 authors
http://groups.google.com/group/sci.electronics.repair/t/d4fd3d1d8e105a63?hl=en

==============================================================================
TOPIC: FUCK OFF Liebermann NUT CASE
http://groups.google.com/group/sci.electronics.repair/t/c90e1a6c9dfca321?hl=en
==============================================================================

== 1 of 14 ==
Date: Thurs, Jan 2 2014 1:55 pm
From: "Phil Allison"



"Jeff Liebermann"


Leiberman - you are the stupidest, most retarded, constantly lying fuckwit
on the NG.

Get cancer and fucking DIE !

NOW !!!!!!!!!!!!







== 2 of 14 ==
Date: Thurs, Jan 2 2014 2:47 pm
From: Jeff Liebermann


On Thu, 2 Jan 2014 11:21:15 -0800, "William Sommerwerck"
<grizzledgeezer@comcast.net> wrote:

>> Why do you keep quoting notes from Llewelen? He wrote a modeling
>> program for wire antennas. We are talking about FETs.
>
>Who is Llewelen?

Author of Eznec antenna modeling software:
<http://www.eznec.com>



--
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 14 ==
Date: Thurs, Jan 2 2014 3:43 pm
From: "Maynard A. Philbrook Jr."


In article <nsj9c95bm2ec1giaju7tj0gc43ne25s007@4ax.com>,
jeffl@cruzio.com says...
> > You are the stupidest, most retarded, constantly lying fuckwit on the NG.
> > Get cancer and fucking DIE !
>
> You'll not get rid of me that easily. I've already had cancer and
> Obamacare promises to keep me alive forever.
>

I'll be more than happy to put a Obama chia pet on your grave stone
for you.

I see Amazon has a deal for 28 bucks..

Jamie





== 4 of 14 ==
Date: Thurs, Jan 2 2014 4:07 pm
From: "Maynard A. Philbrook Jr."


In article <B4GdnYZ19saY4VjPnZ2dnUVZ_tudnZ2d@earthlink.com>,
ricketzz@earthlink.net says...
>
> On 01/02/2014 04:05 AM, William Sommerwerck wrote:
> > "Jeff Liebermann" wrote in message
> > news:nsj9c95bm2ec1giaju7tj0gc43ne25s007@4ax.com...
> >
> > <http://www.eznec.com/Amateur/RMS_Power.pdf>
> > On Pg 6 it says:
> > "The RMS value of power is not the equivalent heating power and,
> > in fact, it doesn't represent any useful physical quantity."
> > and:
> > "The RMS power is different than the average power, and therefore
> > isn?t the equivalent heating power. In fact, the RMS value of the
> > power doesn?t represent anything useful."
>
> > I remember a Popular Electronics quiz with questions about how a
> > voltmeter (at that time, a moving-coil device) would read, depending on
> > the waveform supplied. A key point was that the deflection was
> > proportional to the average current flowing through the coil, but the
> > meter was usually calibrated for the RMS value of a sinewave.
>
> Why do you keep quoting notes from Llewelen? He wrote a modeling program
> for wire antennas. We are talking about FETs.
>
> I think AVG = RMS only if waveform is pure sinewave. Otherwise you must
> use calorimeter or thermocouple to find true RMS.

AVG and RMS is not the same with sine waves..

Avg = 2/pi * peak Voltage.

And RMS is simply sqr( VP^2 / 2).
you'll notice the root his to look for the square not the
average of total voltage for example.

One can shorten that to say RMS = Vp * .707

Just think of a half round circle an draw and find the
area where you can evenly fit a square box in that half circle,
the value will be .707 times the Peak value of that circle.

Averaging ends up to be 2/pi = 0.637 * the peak voltage which
obviously gives you a different number..

And of course, no matter how you slice it, square waves at 50%
duty give you the same all around. AVG and RMS = peak.. cause there
is no slope in time for the avg and the nice square box I stated
fits perfectly in the already square wave for RMS. etc..

Jamie





== 5 of 14 ==
Date: Thurs, Jan 2 2014 4:11 pm
From: "Phil Allison"



"Maynard A. Philbrook Jr."
>
> And of course, no matter how you slice it, square waves at 50%
> duty give you the same all around. AVG and RMS = peak.. cause there
> is no slope in time ...

** Too complicated.

Q. When you ( full wave) rectify a square wave what do you get?

A. DC.

With DC, the average, peak and RMS value are the same.

Is any proof really needed ?




..... Phil








== 6 of 14 ==
Date: Thurs, Jan 2 2014 4:50 pm
From: "Maynard A. Philbrook Jr."


In article <bimdj1F69i3U1@mid.individual.net>, phil_a@tpg.com.au says...
>
> "Maynard A. Philbrook Jr."
> >
> > And of course, no matter how you slice it, square waves at 50%
> > duty give you the same all around. AVG and RMS = peak.. cause there
> > is no slope in time ...
>
> ** Too complicated.
>
> Q. When you ( full wave) rectify a square wave what do you get?
>
> A. DC.
>
> With DC, the average, peak and RMS value are the same.
>
> Is any proof really needed ?
>
>
>
>
> ..... Phil

And where was I disputing that?

Jamie





== 7 of 14 ==
Date: Thurs, Jan 2 2014 4:49 pm
From: "Phil Allison"



"Maynard A. Philbrook Jr."

> >
>> > And of course, no matter how you slice it, square waves at 50%
>> > duty give you the same all around. AVG and RMS = peak.. cause there
>> > is no slope in time ...
>>
>> ** Too complicated.
>>
>> Q. When you ( full wave) rectify a square wave what do you get?
>>
>> A. DC.
>>
>> With DC, the average, peak and RMS value are the same.
>>
>> Is any proof really needed ?
>>
>>

>
> And where was I disputing that?


** Yawnnnnnnnnn - wot a stupid straw man fallacy.

Read what I dam well wrote - fuckwit.



... Phil











== 8 of 14 ==
Date: Thurs, Jan 2 2014 4:51 pm
From: "Shaun"




"Phil Allison" wrote in message news:bik2r7FlgbdU1@mid.individual.net...

"Jeff Liebermann = retarded asshole "
>
>
>
>>>>> Ok, I yield to a higher authority. Heating power is average power:
>>>>> <http://www.eznec.com/Amateur/RMS_Power.pdf>
>>>>> However that doesn't stop nearly everyone from specifying RMS power.
>>>
>>>> ** There is no such quantity as " RMS power " if you are so stupid as
>>>> to
>>>>interpret the term literally.
>>>
>>> Which term should be interpreted non-literally?
>
>>** The term " RMS power " of course -
>
> I thought ...

** No you didn't - cos you are incapable of thought.

The quotation marks made my words quite *impossible* to misinterpret.



>>> Very good. But since there doesn't seem to be any correlation with
>>> heating power (despite using a thermocouple to do the measuring) and
>>> RMS volts or watts,
>>
>>** Quite wrong - there is a very close connection.
>

( snip more TOTALLY IRRELEVANT SHIT )

Leiberman - you are the stupidest, most retarded, constantly lying fuckwit
on the NG.

Get cancer and fucking DIE !


Hey Phil;

I used to work at an Industrial and Instrumentation repair and Calibration
shop that was licensed by Beckman to repair and calibrate there DMMs. In
the good ones, the RMS converted used a thermal method to determine RMS
Voltage and Current. That was 18 years ago and I don't remember any details
except that they used thermal measurement on a heated element. I have
compared the reading on the Beckman - Then Wavetek - now I don't know if
anyone is still making them, to a Fluke RMS DMM at 60 Hz and DC and the
readings matched.
I have always heard that if you really want to know the real value, you have
to buy an RMS meter.


Shaun







== 9 of 14 ==
Date: Thurs, Jan 2 2014 5:04 pm
From: "Phil Allison"



"Shaun"
>
> I used to work at an Industrial and Instrumentation repair and Calibration
> shop that was licensed by Beckman to repair and calibrate there DMMs. In
> the good ones, the RMS converted used a thermal method to determine RMS
> Voltage and Current. That was 18 years ago and I don't remember any
> details except that they used thermal measurement on a heated element. I
> have compared the reading on the Beckman - Then Wavetek - now I don't know
> if anyone is still making them, to a Fluke RMS DMM at 60 Hz and DC and the
> readings matched.

** No fooling...........

> I have always heard that if you really want to know the real value, you
> have to buy an RMS meter.

** That sort of nonsense *would* be said by someone who either owned an RMS
meter or was selling them.

Thermal RMS meters are virtually obsolete these days and have been replaced
by cheap analogue RMS to DC computation ICs in many hand held DMMs OR by
digital sampling computation in most DSOs.

The hand held kind have a limited measurement bandwidth compared to the
latter.

Depends what your needs are.

As Clint Eastwood might have said -

" Man's gotta know the limitations of his test equipment ".




.... Phil






== 10 of 14 ==
Date: Fri, Jan 3 2014 7:35 am
From: dave


On 01/02/2014 04:07 PM, Maynard A. Philbrook Jr. wrote:
> In article <B4GdnYZ19saY4VjPnZ2dnUVZ_tudnZ2d@earthlink.com>,
> ricketzz@earthlink.net says...
>>
>> On 01/02/2014 04:05 AM, William Sommerwerck wrote:
>>> "Jeff Liebermann" wrote in message
>>> news:nsj9c95bm2ec1giaju7tj0gc43ne25s007@4ax.com...
>>>
>>> <http://www.eznec.com/Amateur/RMS_Power.pdf>
>>> On Pg 6 it says:
>>> "The RMS value of power is not the equivalent heating power and,
>>> in fact, it doesn't represent any useful physical quantity."
>>> and:
>>> "The RMS power is different than the average power, and therefore
>>> isn?t the equivalent heating power. In fact, the RMS value of the
>>> power doesn?t represent anything useful."
>>
>>> I remember a Popular Electronics quiz with questions about how a
>>> voltmeter (at that time, a moving-coil device) would read, depending on
>>> the waveform supplied. A key point was that the deflection was
>>> proportional to the average current flowing through the coil, but the
>>> meter was usually calibrated for the RMS value of a sinewave.
>>
>> Why do you keep quoting notes from Llewelen? He wrote a modeling program
>> for wire antennas. We are talking about FETs.
>>
>> I think AVG = RMS only if waveform is pure sinewave. Otherwise you must
>> use calorimeter or thermocouple to find true RMS.
>
> AVG and RMS is not the same with sine waves..
>

Then they never are the same?





== 11 of 14 ==
Date: Fri, Jan 3 2014 7:41 am
From: dave


On 01/02/2014 05:04 PM, Phil Allison wrote:
>
> "Shaun"
>>
>> I used to work at an Industrial and Instrumentation repair and Calibration
>> shop that was licensed by Beckman to repair and calibrate there DMMs. In
>> the good ones, the RMS converted used a thermal method to determine RMS
>> Voltage and Current. That was 18 years ago and I don't remember any
>> details except that they used thermal measurement on a heated element. I
>> have compared the reading on the Beckman - Then Wavetek - now I don't know
>> if anyone is still making them, to a Fluke RMS DMM at 60 Hz and DC and the
>> readings matched.
>
> ** No fooling...........
>
>> I have always heard that if you really want to know the real value, you
>> have to buy an RMS meter.
>
> ** That sort of nonsense *would* be said by someone who either owned an RMS
> meter or was selling them.
>
> Thermal RMS meters are virtually obsolete these days and have been replaced
> by cheap analogue RMS to DC computation ICs in many hand held DMMs OR by
> digital sampling computation in most DSOs.
>
> The hand held kind have a limited measurement bandwidth compared to the
> latter.
>
> Depends what your needs are.
>
> As Clint Eastwood might have said -
>
> " Man's gotta know the limitations of his test equipment ".
>
>
>
>
> .... Phil
>

In television you calibrate the output power metering by operating into
a full power liquid cooled dummy load and measuring the temperature of
the coolant.

Using computational methods on amplifier input parameters is not the
preferred way to determine power (an efficiency factor must be assumed)
and you must ask the FCC for special permission to use the "direct method".

Dave the Re-Re




== 12 of 14 ==
Date: Fri, Jan 3 2014 9:10 am
From: "Michael A. Terrell"



William Sommerwerck wrote:
>
> "Jeff Liebermann" wrote in message
> news:quc9c95b8el5pqevbftgm87mqs5cf8akrh@4ax.com...
>
> > OK, I yield to a higher authority. Heating power is average power:
> > <http://www.eznec.com/Amateur/RMS_Power.pdf>
> > However that doesn't stop nearly everyone from specifying
> > RMS power.
>
> Unfortunately, no.
>
> > So, why do people buy true-RMS voltmeters? If they don't measure
> > anything useful, why bother?
>
> A fair question. Apparently, there was a time when AC power had a significant
> percentage of harmonics (perhaps it still does), and engineers wanted to know
> its "true" heating effect.


This is my favorite True RMS meter. Section three is a description
of how it works. The AC power line is anything but a clean sine wave.
Switching power supplies and older electronics with a single diode in
the power supply distort it, even more. The single diode causes a DC
component on your power, which confuses a simple analog meter. Three
phase is even worse, with all the harmonics on the neutral. There were a
lot of fires in office buildings and factories after the PC became
widespread. It used to be to code to use a smaller neutral on three
phase, than the tree phase lines. The harmonics caused the neutral to
overheat and in some cases, started fires.

I like this Fluke for many reasons, including the ability to read to
.01 dB variations in a signal. I used one to test the -3dB points on
video filters, up to 20 MHz. For anything higher I used a Boonton 9200
RF voltmeter.

Before someone smarts off, Video isn't just television. We produced
equipment with selectable bandwidth from DC>10 KHz to DC>40 MHz in 16
customer specified bandwidths. SDI digital video was 270 MHz, and HD is
even higher.

<http://www.ko4bb.com/Manuals/Fluke/Fluke_8920A_8921A_True_RMS_Voltmeter_Operation_and%20_Service_Manual_Oct78.pdf>


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.




== 13 of 14 ==
Date: Fri, Jan 3 2014 7:23 pm
From: "Phil Allison"



"dave the autistic fool " <ricketzz@earthlink.net>
>
>> As Clint Eastwood might have said -
>>
>> " Man's gotta know the limitations of his test equipment ".
>
>
> In television you calibrate the output power metering by operating into a
> full power liquid cooled dummy load and measuring the temperature of the
> coolant.

** That would be for the actual transmitter on VHF or UHF - right ?

Same idea as using a glass of water and a thermometer test the power RF
power of a microwave oven.

Got SFA to do with the topic.



.... Phil






== 14 of 14 ==
Date: Fri, Jan 3 2014 7:33 pm
From: "Phil Allison"



"dave the pig ignorant autistic IDIOT "


> The question was why is audio power spec is half that of DC on/off
> capability.

** No it was not.


> It is because the device stays on all the time and because the audio
> waveform causes more heating.


** A maker's max dissipation spec for a semiconductor is not related to the
application.

It is only related to the device itself.

Normally, the figure given is for *ideal* operating conditions - like when
mounted on an infinite heatsink held at 20C.



.... Phil








==============================================================================
TOPIC: Open SSID for HP printers
http://groups.google.com/group/sci.electronics.repair/t/2f0e2aeceb0c71fd?hl=en
==============================================================================

== 1 of 4 ==
Date: Thurs, Jan 2 2014 4:46 pm
From: root


I went walking around my neighborhood scanning for open wifi
hotspots and found several HP printers. Does that mean
that someone could park outside the place and a long stream
of documents to the printer(s)?





== 2 of 4 ==
Date: Thurs, Jan 2 2014 4:51 pm
From: Michael Black


On Fri, 3 Jan 2014, root wrote:

> I went walking around my neighborhood scanning for open wifi
> hotspots and found several HP printers. Does that mean
> that someone could park outside the place and a long stream
> of documents to the printer(s)?
>
>
Look on the bright side. They can't retrieve the printing unless they
break into your house.

Michael





== 3 of 4 ==
Date: Thurs, Jan 2 2014 7:54 pm
From: Paul Drahn


On 1/2/2014 4:51 PM, Michael Black wrote:
> On Fri, 3 Jan 2014, root wrote:
>
>> I went walking around my neighborhood scanning for open wifi
>> hotspots and found several HP printers. Does that mean
>> that someone could park outside the place and a long stream
>> of documents to the printer(s)?
>>
>>
> Look on the bright side. They can't retrieve the printing unless they
> break into your house.
>
> Michael
>
True, but they can print pornographic pictures for your kids viewing
pleasure.

Paul




== 4 of 4 ==
Date: Fri, Jan 3 2014 12:15 am
From: Leif Neland


Paul Drahn forklarede den 03-01-2014:
> On 1/2/2014 4:51 PM, Michael Black wrote:
>> On Fri, 3 Jan 2014, root wrote:
>>
>>> I went walking around my neighborhood scanning for open wifi
>>> hotspots and found several HP printers. Does that mean
>>> that someone could park outside the place and a long stream
>>> of documents to the printer(s)?
>>>
>>>
>> Look on the bright side. They can't retrieve the printing unless they
>> break into your house.
>>
>> Michael
>>
> True, but they can print pornographic pictures for your kids viewing
> pleasure.
>
Or, like a glazier hires a punk kid to break windows, an office supply
dealer can hire somebody to use all the toner and paper :-)

Leif

--
Husk k�relys bagp�, hvis din bilfabrikant har taget den idiotiske
beslutning at undlade det.







==============================================================================
TOPIC: Test post for Termey
http://groups.google.com/group/sci.electronics.repair/t/75f33cf051c5534b?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Jan 3 2014 10:25 am
From: jurb6006@gmail.com


On Wednesday, January 1, 2014 4:52:09 PM UTC-5, jurb...@gmail.com wrote:
> I am testing this from Firefox now.






==============================================================================
TOPIC: Request test jig suggestion for microUSB phone charging current
http://groups.google.com/group/sci.electronics.repair/t/d4fd3d1d8e105a63?hl=en
==============================================================================

== 1 of 7 ==
Date: Fri, Jan 3 2014 1:55 pm
From: Danny D'Amico


How would you make a test jig out of a spare USB cable?

For $1.99, I bought at Frys today, this 6-foot USB-A to microB USB
male-to-male cable.
http://farm3.staticflickr.com/2894/11739074746_d8ebbfe363_o.jpg
http://farm4.staticflickr.com/3770/11738580543_301162631e_o.jpg

If I cut the cable in half, and isolate the wires, how would you
recommend I set it up so that it could become a test jig
(to see how much charging current a device actually draws)?

Have you done this before and have advice for how to make that jig?

Specifically, how would you fasten the bare wires, which I presume
are very very thin, and therefore fragile?

Also, we'd need a way to insert the ammeter inline to measure
current.

Any test jig ideas I can benefit from?

NOTE: This is an offshoot of the USB charger thread, where we
determined that a 3.1 Amp dual-USB charger that is 10 Watts
is very different than the same spec at 15 Watts.





== 2 of 7 ==
Date: Fri, Jan 3 2014 2:09 pm
From: "Colin Horsley"



"Danny D'Amico" <danny@is.invalid> wrote in message
news:pan.2014.01.03.21.55.23@is.invalid...
: How would you make a test jig out of a spare USB cable?
:
: For $1.99, I bought at Frys today, this 6-foot USB-A to microB USB
: male-to-male cable.
: http://farm3.staticflickr.com/2894/11739074746_d8ebbfe363_o.jpg
: http://farm4.staticflickr.com/3770/11738580543_301162631e_o.jpg
:
: If I cut the cable in half, and isolate the wires, how would you
: recommend I set it up so that it could become a test jig
: (to see how much charging current a device actually draws)?
:
: Have you done this before and have advice for how to make that jig?
:
: Specifically, how would you fasten the bare wires, which I presume
: are very very thin, and therefore fragile?
:
: Also, we'd need a way to insert the ammeter inline to measure
: current.
:
: Any test jig ideas I can benefit from?
:
: NOTE: This is an offshoot of the USB charger thread, where we
: determined that a 3.1 Amp dual-USB charger that is 10 Watts
: is very different than the same spec at 15 Watts.

Look on eBay "NEW Universal portable USB power mobile mini Current voltage tester
Detector "


Colin






== 3 of 7 ==
Date: Fri, Jan 3 2014 3:09 pm
From: sms


On 1/3/2014 2:09 PM, Colin Horsley wrote:
> "Danny D'Amico" <danny@is.invalid> wrote in message
> news:pan.2014.01.03.21.55.23@is.invalid...
> : How would you make a test jig out of a spare USB cable?
> :
> : For $1.99, I bought at Frys today, this 6-foot USB-A to microB USB
> : male-to-male cable.
> : http://farm3.staticflickr.com/2894/11739074746_d8ebbfe363_o.jpg
> : http://farm4.staticflickr.com/3770/11738580543_301162631e_o.jpg
> :
> : If I cut the cable in half, and isolate the wires, how would you
> : recommend I set it up so that it could become a test jig
> : (to see how much charging current a device actually draws)?
> :
> : Have you done this before and have advice for how to make that jig?
> :
> : Specifically, how would you fasten the bare wires, which I presume
> : are very very thin, and therefore fragile?
> :
> : Also, we'd need a way to insert the ammeter inline to measure
> : current.
> :
> : Any test jig ideas I can benefit from?
> :
> : NOTE: This is an offshoot of the USB charger thread, where we
> : determined that a 3.1 Amp dual-USB charger that is 10 Watts
> : is very different than the same spec at 15 Watts.
>
> Look on eBay "NEW Universal portable USB power mobile mini Current voltage tester
> Detector "

or
<http://dx.com/p/usb-av-usb-power-current-voltage-tester-translucent-blue-silver-235090>






== 4 of 7 ==
Date: Fri, Jan 3 2014 4:24 pm
From: Danny D'Amico


On Sat, 04 Jan 2014 09:09:54 +1100, Colin Horsley wrote:

> Look on eBay "NEW Universal portable USB power mobile mini Current voltage tester
> Detector "

Hi Colin,
That works, but I was just going to slice a cable in half, and then attach
the inner wires to a series of screws.

What I'm thinking is to screw two row of (five?) brass screws into a
piece of wood, and then attaching the cable wires to each row.

Then I can either jump the distance with a copper wire, or with the
meter leads.

But before I build the test jig, someone might suggest a better platform
out of parts commonly found in the garage or shop.





== 5 of 7 ==
Date: Fri, Jan 3 2014 5:00 pm
From: mike


On 1/3/2014 3:09 PM, sms wrote:
> On 1/3/2014 2:09 PM, Colin Horsley wrote:
>> "Danny D'Amico" <danny@is.invalid> wrote in message
>> news:pan.2014.01.03.21.55.23@is.invalid...
>> : How would you make a test jig out of a spare USB cable?
>> :
>> : For $1.99, I bought at Frys today, this 6-foot USB-A to microB USB
>> : male-to-male cable.
>> : http://farm3.staticflickr.com/2894/11739074746_d8ebbfe363_o.jpg
>> : http://farm4.staticflickr.com/3770/11738580543_301162631e_o.jpg
>> :
>> : If I cut the cable in half, and isolate the wires, how would you
>> : recommend I set it up so that it could become a test jig
>> : (to see how much charging current a device actually draws)?
>> :
>> : Have you done this before and have advice for how to make that jig?
>> :
>> : Specifically, how would you fasten the bare wires, which I presume
>> : are very very thin, and therefore fragile?
>> :
>> : Also, we'd need a way to insert the ammeter inline to measure
>> : current.
>> :
>> : Any test jig ideas I can benefit from?
>> :
>> : NOTE: This is an offshoot of the USB charger thread, where we
>> : determined that a 3.1 Amp dual-USB charger that is 10 Watts
>> : is very different than the same spec at 15 Watts.
>>
>> Look on eBay "NEW Universal portable USB power mobile mini Current
>> voltage tester
>> Detector "
>
> or
> <http://dx.com/p/usb-av-usb-power-current-voltage-tester-translucent-blue-silver-235090>
>
>
>
Cool...I was ready to order one until I saw that the data doesn't pass thru.
WTF? The connectors are almost touching, why no data?
Kinda hard to measure the drain of a disk drive in action when it won't
come out of sleep.

Why would you not connect the data unless there were problems?

Anybody bridged the data? Results?




== 6 of 7 ==
Date: Fri, Jan 3 2014 5:05 pm
From: mike


On 1/3/2014 4:24 PM, Danny D'Amico wrote:
> On Sat, 04 Jan 2014 09:09:54 +1100, Colin Horsley wrote:
>
>> Look on eBay "NEW Universal portable USB power mobile mini Current voltage tester
>> Detector "
>
> Hi Colin,
> That works, but I was just going to slice a cable in half, and then attach
> the inner wires to a series of screws.
>
> What I'm thinking is to screw two row of (five?) brass screws into a
> piece of wood, and then attaching the cable wires to each row.
>
> Then I can either jump the distance with a copper wire, or with the
> meter leads.
>
> But before I build the test jig, someone might suggest a better platform
> out of parts commonly found in the garage or shop.
>
That works if you never want any data thru it.
Better would be to cut the power wire and run that thru a meter.
Get out your ohms law calculator and verify that your meter resistance
won't defeat you.

Leave all the high speed data wires and ground alone.




== 7 of 7 ==
Date: Fri, Jan 3 2014 9:46 pm
From: "Colin Horsley"



"Danny D'Amico" <dannyd@is.invalid> wrote in message
news:pan.2014.01.04.00.24.57@is.invalid...
: On Sat, 04 Jan 2014 09:09:54 +1100, Colin Horsley wrote:
:
: > Look on eBay "NEW Universal portable USB power mobile mini Current voltage tester
: > Detector "
:
: Hi Colin,
: That works, but I was just going to slice a cable in half, and then attach
: the inner wires to a series of screws.
:
: What I'm thinking is to screw two row of (five?) brass screws into a
: piece of wood, and then attaching the cable wires to each row.
:
: Then I can either jump the distance with a copper wire, or with the
: meter leads.
:
: But before I build the test jig, someone might suggest a better platform
: out of parts commonly found in the garage or shop.
:

Sorry, I didn't read the description fully! I thought it was too good to be true.
I have actually built this kit, and it does pass through data.
Works very well.

http://www.jaycar.com.au/productView.asp?ID=KC5516

Colin







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