Saturday, June 19, 2010

Why cant you mix rechargeble batteries with alkaline? what could happen?

i want to mix rechargeable nimh batteries with some duracell alkaline batteries



Answer:

They are at different voltages, and current levels.



Rechargeables are 1.2V and alkalines are 1.5V. If they are put in parallel, the rechargeables will discharge into the alkalines.



Rechargeables have limited current, and are usually lower than alkalines. If you put them in series, the rechargeables will limit the amount of current in the circuit, eventually discharge, and then reverse voltage. Very simply, they SHOULDN%26#39;T be mixed, because they each have differing voltage and current ratings.



BUT, in a pinch to power up something, you CAN do it IF AND ONLY IF, the device using the cells has them connected in series, (as most devices do) and, you do not try to charge them in this configuration. (because alkalines are not rechargeable, and may EXPLODE in the worst case!) The downside is that the one or ones with the least ampere-hour rating will discharge first and it will be subjected to reverse current, which will damage it.



So as I said, In a pinch, OK, but just for temporary use as described above.



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Why did "The Clapper" never catch on?

Seriously, this bugs me!



I would have thought that invention would really take off.



what went wrong?



Maybe they should have just tried to cash in on the spousal abuse fad and called it "the slapper".



Slap On!



Slap Off!



Slap On! Slap Off!



The Slapper!



*smack*



Answer:

I bought one, and it was great... but i think the reason that it didn%26#39;t catch on is that many people were too lazy to clap their hands, or go buy it. or maybe dat many people were making love and kept turning on and off their lights constantly Most people feel like morons clapping to turn a light on. It%26#39;s more of a novelty item now.



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Why did mini discs fail to take off...was it the absurdly thin case that made writing a track list a

why, when you have to f.-k about fast forwarding and rewinding with tapes..didnt the near cd quality recording of the mini disc instantly take over.



Answer:

In my ill-infromed opinion it is all Sony%26#39;s fault. Unlike the CD format that that every manufacturer could use Sony kept a tight reign on Minidisc technology. The idea of the small Minisc when compared to a large CD for a portable music device should have been a winner, more so when you consider that many Minidisc players had the facility to directly record music from an audio source such as a home stereo without the need for a PC and at a time when recordable CD%26#39;s were relatively expensive.



Compared to the tape Walkmans the Minidisc was lightyears ahead and for a couple of years it looked like it would be a big hit, but then the price of personal CD players plumetted as obscure manufactures from the east started to make them by the millions. At this time everybody had bought thier music collection on CD and MP3 was a format known only to geeks.



Then, not so long ago, came the MP3 revolution. Everything you could ever want became available to download for a small fee (As honest citizens we would never pirate copyrighted materiel, would we? ;) ) Again the new generation of Minidisc players and drives allowed you to take advantage of this and create compilations on your PC. Again it should have been a winner. But again competiton came from the east in the form of cheaper solid state MP3 players. The death knell was sounding for Minidisc and the final attempt to turn it into a "status symbol" quality brand was killed without mercy by Apple%26#39;s Ipod. i had one it was good at the time ,but with cds u could make a mix cd in minutes for next to nothing...than mp3%26#39;s came a long..mini disc%26#39;s did not have a hope in hell I eventually bought a mini-disc player and the idea is great and definitely an advantage over tapes but it was a mission to put music onto it.



You had to install the software, convert music you wanted to put onto it and you could only play it on the player you had.



You still had to buy CD%26#39;s with the music and then rip it from there. Buying the original minidisc was expensive and then couldn%26#39;t be used in your car, PC, etc so who would want to buy that.



All in all, a good idea but MP3 players are essentially as portable and cheap but just far easier to load with music. my friend has one of those he likes it



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Why did my $100 cingular rebate card go through when i bought something that was $260?

ok so my cingular gift card was only for $100 , i bought something online for $260 and the order went through, why is that? whats going to happen? why does my card still say it has 99 bucks still on it.



Answer:

mabye it charged some money on your credit card if you provided the #. well first of all, i dont think you should have tested it...my guess is that you%26#39;re in $161 debt and they will send you a bill in a few months...good luck and have a good life!



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Why did the VCD I burned didnt have any sound?

So I%26#39;ll give you guys the lowdown: I burned this particular VCD last night using Nero Express. The video quality was really good. The only problem I had was the fact that there were no sounds! The only sound I could hear were screeching sounds. I really don%26#39;t know what happened.



Answer:

Make sure that the file you burned has sound when you play the file on your PC. If this is a standard media file, such as an MPEG, AVI or QuickTime, the video and audio are merged into a single data stream and they are not saved separately. If the file plays on your PC with sound, then it MUST record with sound.



My guess is that the file you%26#39;re trying to burn doesn%26#39;t have sound. If it does have sound, then my next guess is that there is something wrong with the sound on your VCD playback.



Good luck!



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Why do (most) CCTV images have that distinct blue-grey color tone?

Why can%26#39;t they be full color or simply black and white?



Answer:

You%26#39;re probably referring to indoor color cameras. If that is the case, the answer is simple. Cheap cameras. Better personal video camcorders have a circuit called auto white balance (AWB) which compensates for different lighting sources. Most indoor lights are flourescent (bluish) and most CCTV cameras don%26#39;t bother compensating for this. Take them outdoors into the sun, and they%26#39;re fine. You and I don%26#39;t notice this difference in color because of this miracle we call a brain that compensates for lots of things. The image on your retina being upside down, for one.



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Why do alarm clocks snooze for 9 minutes ?

Answer:

Asda have sold me an alarm clock that snoozes for 2 MINUTES!! what is the point of that then?? hardly an extra %26#39;snooze%26#39; is it?? think yourself lucky cos you get 7 minutes more than me in bed every day :( Good frikken question.



I had a phone you could change it, but my new one is nine minutes. I dont get it?? you snooz for nine min. then you have one minute to wake up. A grand total of ten min. mine must be faulty it snoozes for only 5 minutes must go and get a new one It%26#39;s something like (If I remember correctly!) when mechanical alarms were fitted with the snooze feature the internal gears/workings set the alarm off again after 9 minutes as this was the only way it could be done, since then it has become a tradition sort of thing. There%26#39;s no reason why a digital alarm clock cannot be set to snooze for whatever time, it would only be a case of something simple like changing the value of a capacitor or resistor, so I guess the 9 minutes is a watchmakers thing. There are 12 numbers on the clock, if you take the hrs in a day (24) and them together = 36, divide that by the average number of feet on a bed (4) then you get your 9 minutes... pretty obvious I thought..!! Don%26#39;t know why as mine only snoozes for 8 mins and my cell phone for 15.



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