Digest for sci.electronics.repair@googlegroups.com - 11 updates in 4 topics

vjp2.at@at.BioStrategist.dot.dot.com: Jul 14 04:15PM

Before the new year )not exactl sure when, cudda been a year ago) I saw a
hairline fracture on my 2007 laptop. I assumed since it is still working so
much later, it is not mercury vapor. If it was mercury it would have all
leaked away, right? I looked at the specs and a few models were made with
mercury but most not. So today I played with the scratch with my
fingernail. It is under some plastic layer. And it began to streak from the
scratch upwards and downwards, and at the bottom of the screen it looked like
liquid leak collecting. Turned it off and it was still there when back
on. Ok, how much worse is it? How long will it survive? Is it toxic? OK, it's
LIQUID crystal. But nothing seems to have "gotten out". I have a few
discolored knicks on my Kindle but they dona't seem to effect operation (I
had dropped my keys on it).
 
 
 
- = -
Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus
blog: panix.com/~vjp2/ruminatn.htm - = - web: panix.com/~vjp2/vasos.htm
facebook.com/vasjpan2 - linkedin.com/in/vasjpan02 - biostrategist.com
---{Nothing herein constitutes advice. Everything fully disclaimed.}---
Sjouke Burry <burrynulnulfour@ppllaanneett.nnll>: Jul 14 06:35PM +0200

> blog: panix.com/~vjp2/ruminatn.htm - = - web: panix.com/~vjp2/vasos.htm
> facebook.com/vasjpan2 - linkedin.com/in/vasjpan02 - biostrategist.com
> ---{Nothing herein constitutes advice. Everything fully disclaimed.}---
 
Air is getting in and air is no good medium to replace the
lcd layer.
Also some conducting lines covering the glass layer(s)
get broken.
The screen is finished.
fynnashba@gmail.com: Jul 14 01:09AM -0700

Please comrades I want to find out when a SET states and a RESET state are obtained in an RS flip flop.
The Net has been confusing me with conflicting facts but l know this learned and honored group will settle it for me as you always do
is the state determined by the S (SET) input or the Q output? Is the criteria the same for both the NOR and NAND gates?
Thank you
Pimpom <nobody@nowhere.com>: Jul 14 05:14PM +0530

> The Net has been confusing me with conflicting facts but l know this learned and honored group will settle it for me as you always do
> is the state determined by the S (SET) input or the Q output? Is the criteria the same for both the NOR and NAND gates?
> Thank you
 
In electronics, as in most things, the output is determined by
the input. In its basic form, S (SET) makes the Q output go high.
R (RESET) makes the output return to the way it was before, that
is, it resets the state of the output.
 
This type of question is best asked in sci.electronics.basics
Jeff Urban <jurb6006@gmail.com>: Jul 13 04:38PM -0700

>Not following how pulses will not affect a mechanical meter
 
 
Because of inertia. The current moves a wheel in there if you hit it fast enough it cannot accelerate fast enough. It is up to you to store the energy though, how you gonna do that ? I know of no battery that can take a 500 amp charge for a few milliseconds and then deliver it out as needed. Then depending on what kind of panel you got you might have to get ahead of the main breaker to even do that. Then you might blow their fuses outside.
 
It is not easy to steal power, in fact any effective means is usually more trouble than it's worth.
Michael Terrell <terrell.michael.a@gmail.com>: Jul 13 04:58PM -0700

Ask Marge Schott. She was in trouble after CG&E discovered the current transformers had been shunted at Riverfront Stadium.
Fox's Mercantile <jdangus@att.net>: Jul 13 07:15PM -0500

On 7/13/20 6:58 PM, Michael Terrell wrote:
> Ask Marge Schott. She was in trouble after CG&E discovered
> the current transformers had been shunted at Riverfront Stadium.
 
I'm sure it worked well.
Until she got caught.
I'm pretty sure that's when the "more trouble than it's worth"
kicked in.
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Michael Terrell <terrell.michael.a@gmail.com>: Jul 13 06:25PM -0700

Apparently it was done just before the stadium was opened. She was fined for all the stolen power, plus interest by the utility.
Clifford Heath <no.spam@please.net>: Jul 14 01:40PM +1000

On 14/7/20 9:38 am, Jeff Urban wrote:
>> Not following how pulses will not affect a mechanical meter
 
> Because of inertia. The current moves a wheel in there if you hit it fast enough it cannot accelerate fast enough.
 
It can always accelerate fast enough. A localised short (microseconds or
so) sharp pulse just deforms the metal briefly, storing the energy in
spring action. As long as the metal is elastic, that energy will spread
to a uniform acceleration.
 
When you put a ceramic cup down on a stone benchtop, it comes to rest in
the distance and time for which the surfaces are *deformed*. Even when
they're heavy, dense and brittle. That's true of any impact. Same deal
with an inertial pulse delivered by electromagnetism.
 
CH
bilou <bilou@sfr.fr>: Jul 14 09:42AM +0200

On 29/06/2020 07:19, Jeff Urban wrote:
> Alright fuck it. There is one way.
 
> You "tap" the power for milliseconds but at a very high peak current which is maybe the same wattage but you have done it so fast the meter misses some of it.
 
> That is the ONLY way to really beat it and I am not sure it works on non-mechanical meters.
 
That is false.
Short pulses are used to drive power tools at low speed.
Now if you use short pulses you need BIG currents and the losses
in wiring resistance increase a lot.
Inductance too start to be problematic.
Think of when you drive a nail in wood with a hammer.
Mike S <mscir@yahoo.com>: Jul 13 06:00PM -0700

On 7/10/2020 1:56 PM, Jeff Urban wrote:
 
>> My Google Chrome stopped working. It turned out I could not reload, because my system was 32 bit and Chrome now only runs 64 bit. The solution was Chromium, which works just as well, maybe better. You might want to consider changing browsers.
 
> I can't stand Chrome. I'll give up the whole internet before I will submit to that shit.
 
> I DLed the file for the upgrade to 52.9. We'll see how that goes. I don't now why I couldn't find it.
 
I worked on a machine with an older OS (can't remember which one) for
someone who kept having problems with Firefox, they were very happy with
Opera, which now has several very useful plugins.
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