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Nish Nishant wrote: I don't speak Hindi either Apparently, you agree, as you left . . .
(I'm a bit sleep deprived so you may as well ignore me).
"The difference between genius and stupidity is that genius has its limits." - Albert Einstein | "As far as we know, our computer has never had an undetected error." - Weisert | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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LOL - well yeah, not knowing Hindi was honestly not a factor
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Nish Nishant wrote: In an earlier case, a bride married a guest at her wedding after the groom had an epileptic fit. Maybe she had just really bad eyesight and din't want to admit it.
The good thing about pessimism is, that you are always either right or pleasently surprised.
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Quote: The bride tested the groom on his math skills and when he got the sum wrong, she walked out. The question she asked: How much is 15 plus six? His reply: 17. Looks like she made the right choice.
There are only 10 types of people in the world, those who understand binary and those who don't.
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Anyone who cannot cope with mathematics is not fully human. At best he is a tolerable subhuman who has learned to wear shoes, bath and not make messes in the house.
-- Robert Heinlein, Lazarus Long: "Time Enough for Love"
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My faith in humanity is now less bruised. Someone else who remembers the classics!
Software Zen: delete this;
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I predict that the consequences will be literally incalculable.
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.
--Winston Churchill
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Love it! Thanks for posting this.
I think all potential married couples, should go through a validation process before getting married,and then another one before conceiving their first child.
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To an extent, in many cultures, validation comes about during the courting rituals.
However, in the case where marriages are arranged by parents for whatever weird social standing events they envision - what other outcome would you expect.
"The difference between genius and stupidity is that genius has its limits." - Albert Einstein | "As far as we know, our computer has never had an undetected error." - Weisert | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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OK, so now I'm confused.
What is 15 + 6, then?
And wasn't I...? I'm sure I had a wife around here, somewhere...
I wanna be a eunuchs developer! Pass me a bread knife!
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She found the bananas, shipped from Costa Rica, were infested with eggs from the Brazilian Wandering Spider
It had wandered a long way.
Was that one of the comments, I think they may be blocked at work cos I couldn't see any.
When writing / typing I never use the words wander or wonder as at the tender age of 40 I can still never remember which is which.
Some men are born mediocre, some men achieve mediocrity, and some men have mediocrity thrust upon them.
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chriselst wrote: When writing / typing I never use the words wander or wonder as at the tender age of 40 I can still never remember which is which. Cool, it's not just me then.
No object is so beautiful that, under certain conditions, it will not look ugly. - Oscar Wilde
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chriselst wrote: When writing / typing I never use the words wander or wonder as at the tender age of 40 I can still never remember which is which. To WANder is to go afield, communicating with people far and wide.
To WONder is to use a homonym of ONE, and stay by yourself and think things through.
I wanna be a eunuchs developer! Pass me a bread knife!
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Quote: I wonder where the stars go When the sky is blue
I wonder where the lies go When they start coming true
I wonder if we straighten All the the things we've knocked askew
How can we right our wrongs When there is no how or why or who
I wonder if can we lose our guilt When we've been accused
Where does all the downers hide When we are amused
I wonder where choices go When we've lost the right to choose
How can we solve these mysteries We have not any clues
I wonder as I wander
And the wandering gets stronger
It can't really be much longer
Till I wander my way through
With wandering comes doubt
And it seems like no way out
Unless I whisper, laugh or shout
All my wonders to the world
I've wondered where my childhood went Ever since I grew
I've wandered all the pages Filled with pictures that I drew
As I wondered something Inside me did brew
Words can not explain it There is nothing I can do
Mikelangelo and the Black Sea Gentlemen
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I have found a torch (flashlight), ok, a lamp, that I bought some time ago and forgot about, but its rechargeable battery is quite dead. Now I would like to pick a charger from the plethora I have under my bed and use it for the said lamp. Now, the lamp has a socket for what appears to be a very standard +-5 mm coaxial power jack, but I do have a spare plug only, no charger, that looks nearly identical, but does fit, nicely. I'm thinking it should be fine if I assume a normal -ve inside, +ve outside, formation, and hook it up to a low current 12v source. That shouldn't really hurt a 9v battery, from what I can recall from my electrics days (age and alcohol having blurred that recall). Not so?
No object is so beautiful that, under certain conditions, it will not look ugly. - Oscar Wilde
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That depends, what is the chemistry of battery inside it, lead-acid, Nimh, Lithium (lipo, li-ion)?
The proper charger may have been current limiting to charge the battery properly, or is the charge circuit inside the torch?
You risk an explosion (probably a small one ) if its done wrongly.
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The torch is a cheapo type, assembled with plastic welded studs instead of removable screws, so I can't see the battery without breaking the torch, then finding a soldering iron to tack it back together. The label on it's outside says, "3W, 230V", but the connector type and <1mm wiring inside really suggest the voltage rating is for the PSU, not what gets applied to the torch. The cheap nature of such a torch also counts against anything fancy like charging circuitry inside it.
No object is so beautiful that, under certain conditions, it will not look ugly. - Oscar Wilde
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Speaking from experience (I have played hunt the PSU more than once) you can get away with over volting battery by a small amount (9v battery 12v charger) once or twice it does effect it's long term life, however that appears not to be an issue. The main danger is backwards connection go for centre + outside -
Just keep a whatch on it!
Glenn ( MIET)
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Of course, you are right. Dunno what I was thinking of with centre -
I should be able to see that by opening the torch though. The connector is was more accessible, even visible, than the battery.
If not, I doubt at an under voltage the polarity would be too big an issue though. So I figure if I use 9v, and the little LED built into the torch, next to the charger plug, lights, the polarity is right.
If I recall my theory correctly - I will hunt an old textbook down - a slight 'over voltage' is essential to charging vs. discharging battery. But of course, a discharged battery is at a much lower voltage than the charger already. And, my studies only touched on basic lead-acid charging.
No object is so beautiful that, under certain conditions, it will not look ugly. - Oscar Wilde
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Over-voltage is required (you can trace that to thermodynamics) - but there's a caveat or two you need to heed:
The higher the current supplied, the faster the battery will charge, and also, the hotter it will get. That is also a factor in reducing the life of a rechargeable batter.
When fully charged, it is best to reduce the charging current to none, or better still, remove it from the charging state. This, too, will mess up your battery life.
<modify>
I noted well down the thread that you identified this as a lead-acid battery. A point to note about this is to consider that a car's lead-acid batteries are charged by the alternator but the voltage regulator keeps if from overcharging by shunting away the current through a power resister (as heat) when the voltage indicates it's fully charged.
"The difference between genius and stupidity is that genius has its limits." - Albert Einstein | "As far as we know, our computer has never had an undetected error." - Weisert | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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You are right about the polarity. As I said in my reply to Display Name Taken, below, I luckily managed to open the bugger, and the symbol on the PCB under the LED confirms centre is +. It also has a another diode though, I presume for some protection against reversed polarity.
No object is so beautiful that, under certain conditions, it will not look ugly. - Oscar Wilde
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In that case you may have no option but to use a variable voltage/current bench type PSU then. If its a lead-acid style battery that's been left at a low state of charge for a long period then the battery may well no longer take a charge.
What voltage is the bulb, that may help you with setting the PSU voltage?
You should be OK to start with charging it at a maximum voltage equal to the bulb voltage rating and 50-100ma current limit.
Supervised charging would be a good idea too at least for the first charge.
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Oi. The bulb is an array of 18 LEDs.
No object is so beautiful that, under certain conditions, it will not look ugly. - Oscar Wilde
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Overjoyed, I discovered some small screws I didn't see the other night, under dimmer electric light. It is in fact two sealed lead acid batteries, that have been at a low state of charge their life with me. They do give a "constant voltage" (maybe DC translated from Chinese?) charge of 4.8V - 5V, and standby of 4.5V - 4.5V but are connected in parallel. I doubt a low current (850mA) 9V charge would blow them up, but now I know what to aim for.
No object is so beautiful that, under certain conditions, it will not look ugly. - Oscar Wilde
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