Digest for sci.electronics.repair@googlegroups.com - 17 updates in 4 topics

tubeguy@myshop.com: Jan 26 09:56PM -0600

On Thu, 24 Jan 2019 18:58:04 -0800, Jeff Liebermann <jeffl@cruzio.com>
wrote:
 
><https://www.aps.org/>
>If you need help finding solid ground, I'm sure one of these
>organizations can find you a phase diagram.
 
If there is no governor, who enforces Ohms Law?
 
---
Jeff Liebermann <jeffl@cruzio.com>: Jan 26 08:24PM -0800

>>If you need help finding solid ground, I'm sure one of these
>>organizations can find you a phase diagram.
 
>If there is no governor, who enforces Ohms Law?
 
I don't think you understand. A governor keeps rotation and revolving
doors from spinning out of control.
<https://en.wikipedia.org/wiki/Governor_(device)>
A president does quite the opposite, causing things to go out of
control with corrupt and rapidly spinning appointments. See President
Trump's advisors, appointments, and associates for examples. I guess
it would be redundant to suggest that the state of the union is
anything but solid.
 
--
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
Terry Schwartz <tschw10117@aol.com>: Jan 27 08:16AM -0800

On Saturday, January 26, 2019 at 10:24:27 PM UTC-6, Jeff Liebermann wrote:
> 150 Felker St #D http://www.LearnByDestroying.com
> Santa Cruz CA 95060 http://802.11junk.com
> Skype: JeffLiebermann AE6KS 831-336-2558
 
Stop feeding the troll.
Cursitor Doom <curd@notformail.com>: Jan 27 04:24PM

On Sun, 27 Jan 2019 08:16:49 -0800, Terry Schwartz wrote:
 
> Stop feeding the troll.
 
Surely you can't mean the guy who needs a computer just to do Ohm's
Law? ;->
 
 
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
adrian@poppyrecords.invalid.invalid (Adrian Tuddenham): Jan 27 09:47AM

> > the bearings.
 
> > Is this serious?
 
> If it has a phase-shift capacitor, that has probably changed value ...
 
My apologies, I didn't spot that you had said it was 3Ph.
 
It could be one phase disconnected, although that probably would make
more of a hum than a buzz. Laminations could be working loose in the
rotor or the windings working loose in the stator; the former will be
more likely to change on load or pulsate at slip frequency.
 
--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
arlen holder <arlen@arlen.com>: Jan 26 09:08PM

On Sat, 26 Jan 2019 04:20:31 -0600, Fox's Mercantile wrote:
> Go away.
 
On Sat, 26 Jan 2019 10:35:54 +0000, newshound wrote:
> newshound <newshound@stevejqr.plus.com>
 
Hi Snit,
 
Why do these two prove, in _every_ post, they own the brain of a child?
o Fox's Mercantile <jdangus@att.net> (*also known as "Snit"*)
o newshound <newshound@stevejqr.plus.com
 
It's clear you don't comprehend the technical question.
o But why do you _prove_ your lack of comprehension in every post?
Nomen Nescio <nobody@dizum.com>: Jan 26 10:26PM +0100

In article <S_ednbg_JIDtqdHBnZ2dnUU7-U2dnZ2d@giganews.com>
> Jeff-1.0
> WA6FWi
> http:foxsmercantile.com
 
Big mistake placing your call sign in your sig.
 
If you're going to get into arguments with people on Usenet, there are
some very mean people who will look you up in the FCC call sign
registry and cause you and your family immense problems. They can go
to a site such as Intelius and with their credit card learn the entire
public record of your life. It has happened again and again on Usenet,
and they guy you're screwing with is one of the sock puppets of a guy
who does such a thing. An American Indian named Eagle made that same
mistake with his call sign. They drove him off from Usenet with
threats to his entire family. Others have suffered the same fate.
 
It's probably a bit late, but If I were you I'd drop that call sign
from your sig file.
Fox's Mercantile <jdangus@att.net>: Jan 26 03:41PM -0600

On 1/26/19 3:26 PM, Nomen Nescio wrote:
> It's probably a bit late, but If I were you I'd drop that call sign
> from your sig file.
 
I appreciate the concern, but I ain't afraid of assholes on Usenet.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Fox's Mercantile <jdangus@att.net>: Jan 26 03:43PM -0600

On 1/26/19 3:08 PM, arlen holder wrote:
> Hi Snit,
 
Just like last time, the time before that and the time before that.
 
You're convinced I'm Snit. I'm not.
 
What do you do? Jack off in front of your computer thinking how
clever you are?
 
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Jeff Liebermann <jeffl@cruzio.com>: Jan 26 01:46PM -0800

On Sat, 26 Jan 2019 05:23:34 -0000 (UTC), arlen holder
 
>o Detect Hidden Camera, version 1.9
 
Nothing found on the Play store.
 
>o (com.techno95.detecthiddencameraandmicrophone)
 
There's nothing by techno95 remaining on the Google Play Store.
However, you can get the APK if you want to live dangerously:
<https://www.apkfollow.com/app/detect-hidden-cameras-and-microphones/com.techno95.detecthiddencameraandmicrophone/>
 
Let us know when you find a URL that I can use for these. Like most
people, I don't like to waste my time Googling for things that you
could easily provide as a URL.
 
While you're looking, consider that finding a hidden camera requires
that the camera emits something that you can detect with your
smartphone. That limits it to RF emissions of some sort, magnetic
emissions from the lens auto focus electronics, or IR emissions from
some manner of illuminator. You might to better with a spectrum
analyzer (or RTL-SDR dongle) and look for the camera clock oscillator,
LAN clock frequency, or RF backhaul frequency. CCTV cameras are often
powered by 24VAC. Maybe look for a 60Hz AC power field where one
would normally not be expected.
 
--
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
John Robertson <spam@flippers.com>: Jan 26 03:05PM -0800

On 2019/01/26 1:46 p.m., Jeff Liebermann wrote:
> LAN clock frequency, or RF backhaul frequency. CCTV cameras are often
> powered by 24VAC. Maybe look for a 60Hz AC power field where one
> would normally not be expected.
 
Another detector for a hidden camera lens is the reflective LED method.
You wear a headdress of LEDs facing outwards just above your eyes and if
you see bright point reflections then you may have found your hidden
camera (lens)...
 
This was explored in the book by Cory Doctorow "Little Brother"
 
https://boingboing.net/2008/05/09/howto-detect-hidden.html
 
John :-#)#
"Anonymous Remailer (austria)" <mixmaster@remailer.privacy.at>: Jan 27 12:37AM +0100

In article <S_ednbg_JIDtqdHBnZ2dnUU7-U2dnZ2d@giganews.com>
> Jeff-1.0
> WA6FWi
> http:foxsmercantile.com
 
Big mistake placing your call sign in your sig.
 
If you're going to get into arguments with people on Usenet, there are
some very mean people who will look you up in the FCC call sign
registry and cause you and your family immense problems. They can go
to a site such as Intelius and with their credit card learn the entire
public record of your life. It has happened again and again on Usenet,
and they guy you're screwing with is one of the sock puppets of a guy
who does such a thing. An American Indian named Eagle made that same
mistake with his call sign. They drove him off from Usenet with
threats to his entire family. Others have suffered the same fate.
 
It's probably a bit late, but If I were you I'd drop that call sign
from your sig file.
arlen holder <arlen@arlen.com>: Jan 27 04:17AM

On Sat, 26 Jan 2019 13:46:23 -0800, Jeff Liebermann wrote:
 
>>o Detect Hidden Camera, version 1.9
> Nothing found on the Play store.
 
I apologize that the app I used is no longer in Google Play.
 
This is what the "green screen" IR detector screen looks like:
<http://www.bild.me/bild.php?file=6487383detect08.jpg>
That's actually an infrared camera it's pointed at, but it's apparently off
(likely as wires pulled out when the tree fell down in a windstorm).
 
Here, for the record, is what the "magnetometer" readout looks like
with the results in both cases when pressed next to radios:
<http://www.bild.me/bild.php?file=1112569detect07.jpg>
It glows red when you're close to an RF emitter of various sorts:
 
 
> There's nothing by techno95 remaining on the Google Play Store.
> However, you can get the APK if you want to live dangerously:
> <https://www.apkfollow.com/app/detect-hidden-cameras-and-microphones/com.techno95.detecthiddencameraandmicrophone/>
 
I apologize. Let me use a few apps in my "system" folder to check.
Apparently I installed version 1.9 of that app on November 9th, 2018.
 
1. This is what "My Apps" freeware shows about that app:
o <https://play.google.com/store/apps/details?id=com.spencerstudios.applist>
<http://www.bild.me/bild.php?file=2539873detect01.jpg>
 
2. This is what "List My Apps" freeware shows about that app:
o <https://f-droid.org/en/packages/de.onyxbits.listmyapps/>
<http://www.bild.me/bild.php?file=3786727detect02.jpg>
 
3. This is what "My App List" freeware shows about that app:
o <https://play.google.com/store/apps/details?id=com.projectsexception.myapplist>
<http://www.bild.me/bild.php?file=4643505detect03.jpg>
 
4. This is what "Applications Info" freeware shows about that app:
o <https://play.google.com/store/apps/details?id=com.majeur.applicationsinfo>
<http://www.bild.me/bild.php?file=1843366detect04.jpg>
 
5. This is what my.own.apps freeware shows (but it's obnoxiousware):
o My Apps <https://play.google.com/store/apps/details?id=my.own.apps>
<http://www.bild.me/bild.php?file=1547742detect05.jpg>
 
6. This is what mobi.usage.appbackup freeware shows about that app:
o App Backup & Restore <https://play.google.com/store/apps/details?id=mobi.usage.appbackup>
<http://www.bild.me/bild.php?file=4930033detect06.jpg>
 
> Let us know when you find a URL that I can use for these. Like most
> people, I don't like to waste my time Googling for things that you
> could easily provide as a URL.
 
I agree with you that the one I used is no longer easy to find.
Luckily there are plenty of "hidden camera detectors" on Google Play:
<https://play.google.com/store/search?q=hidden camera detector>
 
I tested FOUR of them for you, where I recommend the LAST one below.
 
Here is one called "Hidden Camera Detector".
<https://play.google.com/store/apps/details?id=hiddencamdetector.futureapps.com.hiddencamdetector>
<http://www.bild.me/bild.php?file=2460855detect09.jpg>
Here it is in use inside my house (I will test it outside later):
<http://www.bild.me/bild.php?file=2368161detect10.jpg>
That app has ads; but it seems otherwise the same as the old one I have.
 
Here's another one called "Hidden Camera Detector".
<https://play.google.com/store/apps/details?id=com.labinformatics.hiddencameradetectorspy>
<http://www.bild.me/bild.php?file=8525590detect13.jpg>
Here it is in use inside my house (notice it uses a "blue screen"):
<http://www.bild.me/bild.php?file=8822787detect14.jpg>
The magnetometer seems to give slightly more dynamic data:
<http://www.bild.me/bild.php?file=5189465detect15.jpg>
 
Here is a lousy sophomoric one called "Anti-Spy:Came Detector"
<https://play.google.com/store/apps/details?id=com.mastertech.SpyDetector>
<http://www.bild.me/bild.php?file=8552496detect11.jpg>
It has obnoxious ads; but otherwise, it seems the same as mine.
<http://www.bild.me/bild.php?file=8121084detect12.jpg>
(I don't recommend this app due to the obnoxities.)
 
Here is one called "Hidden Camera Detector Camera Scanner":
<https://play.google.com/store/apps/details?id=com.teamissolution.hiddencameradetectedspycamerasdetectors>
<http://www.bild.me/bild.php?file=8255824detect16.png>
This one uses a "pink viewfinder" & a dial gauge magnetometer:
<http://www.bild.me/bild.php?file=7911635detect17.jpg>
The magnetometer, like the others, displays what it thinks it sees:
<http://www.bild.me/bild.php?file=1341749detect18.jpg>
This one seems to have an additional separate graphing function:
<http://www.bild.me/bild.php?file=8397455detect19.jpg>
 
Of all those, I like the one I have best since it has zero ads!
But of the ones that are available now, that last one is OK.
 
One thing I noticed in testing that I didn't realize is that the
"Green Screen" is immaterial. I don't know WHY they change
the color of the screen (do you?).
 
Some are green. Some are blue. Some red.
Why bother changing the color?
 
> smartphone. That limits it to RF emissions of some sort, magnetic
> emissions from the lens auto focus electronics, or IR emissions from
> some manner of illuminator.
 
I think the apps all look for the same thing:
o Magnetometer readings, or,
o They just let the IR-sensitive camera do its normal thing.
 
I "guess" they make the screen "green or red or blue" to give more
contrast? I'm not sure. Do you know why they change the screen color?
 
> LAN clock frequency, or RF backhaul frequency. CCTV cameras are often
> powered by 24VAC. Maybe look for a 60Hz AC power field where one
> would normally not be expected.
 
I'm not a professional; I just hike in rough terrain where bad guys are.
That is, I happen to often hike in the hills where pot farmers grow stuff.
<http://www.bild.me/bild.php?file=3023286detect20.jpg>
 
I find their "stuff" all the time, fertilizer, hoses, dams, irrigation
tubing, and even hammocks, sleeping bags, weighing scales,
car batteries, etc.
 
It's very common in these inaccessible mountain areas.
 
Here's just a bunch of horticulture pots I found yesterday while hiking at
least two or three miles from the nearest road deep off the trails.
<http://www.bild.me/bild.php?file=2648541detect21.jpg>
 
Whenever I see _that_ stuff, I know the pot farmers are nearby.
I just want to see if they have hidden cameras in the trees.
Jeff Liebermann <jeffl@cruzio.com>: Jan 26 09:03PM -0800

On Sat, 26 Jan 2019 15:05:10 -0800, John Robertson <spam@flippers.com>
wrote:
 
>This was explored in the book by Cory Doctorow "Little Brother"
>https://boingboing.net/2008/05/09/howto-detect-hidden.html
>John :-#)#
 
Nice idea. My initial guess(tm) was that the anti-reflective coating
on the camera lens would umm... not reflect anything:
<https://www.instructables.com/id/How-to-locate-pinhole-cameras/>
The instructions are value and ambiguous. It took me a while to
decode how it is intended to be used.
 
The purpose of the toilet paper tube is prevent the user from seeing
the direct light from the flashlight. In order to get a tolerable
reflection, the flashlight should be close and parallel to the toilet
paper tube. Once I did that, I was able to see reflections from some
of my various cameras, but also reflections from anything shiny in the
house. The lenses that did not reflect light were those with clear
plastic lens protectors, which reflected nothing no matter what I
tried. Actually, there was plenty of light scattering, but nothing
that could be seen as a reflected spot. That eliminated some of my
laptop web cameras and outdoor security cameras. How well it works in
the field, I don't know. Probably better than inside my house because
of the lack of spurious reflections.
 
--
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
tubeguy@myshop.com: Jan 26 09:56PM -0600

Is there any Software to calculate Ohms Law and other electronics math?
 
I have never been good at Mathematics, once you put numbers over other
numbers, use alphabet letters in place of numbers, or talk about
squaring a number, I am completely lost. This is nothing new. Even in
high school I needed special help and barely passed algebra.
 
Yet, I have worked with electronics all my life. (55+ years). I usually
fInd the correct resistors by trial and error, using pots and decade
boxes. Or using meters for watts, amps, or volts.
 
Most of the time I see someone in a youtube video using this kind of
math, I skip the video. I just hate math and always will.
 
But I'd welcome a piece of software that would calculate simple ohms law
things like determining the resisitor size or amperage, etc.
 
Yes, I'm aware of websites that do that math, but I do not have internet
access in my shop, which is where I need this sort of thing.
 
Is there any software (preferably free) that I can put on my laptop PC
to do this? (Must be suitable for Windows XP SP3 Pro).
 
Google did not find anything except those online (web based)
calculators...
Ralph Mowery <rmowery28146@earthlink.net>: Jan 26 11:19PM -0500

In article <mvaq4e5ap2shaio9h1skold7spjogfa183@4ax.com>,
tubeguy@myshop.com says...
 
> Google did not find anything except those online (web based)
> calculators...
 
Try this.
 
https://www.electronics2000.co.uk/download.php
Jeff Liebermann <jeffl@cruzio.com>: Jan 26 08:36PM -0800


>Is there any Software to calculate Ohms Law and other electronics math?
 
No. It's too easy and simple to make it worthwhile writing a stand
alone Ohm's Law program for a PC. There are plenty for IOS and
Android devices, but not for PC's. It might be helpful in finding
something if you were more specific as to what you mean by "other
electronics math"?
 
>Is there any software (preferably free) that I can put on my laptop PC
>to do this? (Must be suitable for Windows XP SP3 Pro).
 
I think you'll find one of these to be more suitable:
<https://www.google.com/search?q=ohm's+law+cardboard+slide+rule&tbm=isch>
Most of my collection:
<http://www.learnbydestroying.com/jeffl/crud/Paper-Slide-Rule-Calculators.jpg>
<http://www.learnbydestroying.com/jeffl/crud/Paper-Slide-Rule-Calculators-02.jpg>
Oddly, I don't seem to have one that does Ohm's Law.
 
 
--
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
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