why do clocks have to be reset every time there is a power outage?

[sdifox]

Originally posted by: oldsmoboat
Batteries are toxic waste. You guys using batteries have no concern for the earth and have caused global warming all by yourselves.

Mercury free battery if it makes you feel any better. Besides, I don't think I have replaced it in 5 years.

I do test it once a quarter to make sure it is still working.

 

[LTC8K6]

Those clocks that were all over TV a while ago that "set themselves" when the power comes back on are actually just 2 seperate clocks. One is powered by a very long life lithium battery and tells the main clock what time it is. That is how they "set themselves" when the power comes back on.

It looks neat, but when you realize it's just another battery powered clock doing the setting, it's not as neat anymore.

A lot of people think these clocks are getting the time from somewhere else, but they aren't.

 

[KoolDrew]

Originally posted by: Spartan Niner
Battery backup FTW

 

[JTsyo]

Originally posted by: mrSHEiK124
My $10 Big Lots RCA alarm clock (which is loud as fucking hell, ) has a 9V backup battery. Last Fall semester (Fall 07), there was a car accident about two miles from my apartment that knocked out power to all of Fletcher Ave., including my apartment and the university. I had my alarm set to 12 PM for a 2 PM class, and I woke up to a very faint beeping. I notice the power's out (computer died), and I look at the alarm clock and the screen is completely off, but it's just making this tiny squeak in hopes that I'll get up. Walked over, hit off, and I think I kissed it. That thing saved my ass.

My Motorola V600's battery died once while I was asleep, and I was using it to wake up for class. It powered back up, just long enough to blast my alarm ringtone, then it died.

ahh college days, when you need an alarm for a 2PM class.

 

[olds]

Originally posted by: NSFW

Originally posted by: oldsmoboat
Batteries are toxic waste. You guys using batteries have no concern for the earth and have caused global warming all by yourselves.

I happen to know that your furnace doesn't run on solar power.

Care to explain yourself?

I have a vent into my basement from the gates of hell. I store that heat and distribute it throughout the house using the heat's own properties (heat rises).

 

[zerocool1]

atomic clocks?

 

[OpenThirdEye]

Originally posted by: walrus
Because life sucks.....then you snorgle

:Q

 

[DaWhim]

I bought a UPS just for. it annoyed the hell out of me.

 

[feralkid]

Originally posted by: MustISO
We have an alarm clock that is able to set the time through the power lines. That is a great feature, it's too bad all appliances don't do that.

I have a toaster that is able to toast bread through VHF broadcast signals. It's too bad for me when they switch to digital.

 

[Don Vito Corleone]

My Sony iPhone alarm clock not only has a LiIon backup battery, it shipped already set to the correct time - all I had to do was adjust the time zone. Alarm clocks are one area in which Sony has always led the way in ease of use and features, and continues to do so IMO.

 

[Fiat1]

Just get this clock radio best ever

 

[sswingle]

Originally posted by: LTC8K6
Those clocks that were all over TV a while ago that "set themselves" when the power comes back on are actually just 2 seperate clocks. One is powered by a very long life lithium battery and tells the main clock what time it is. That is how they "set themselves" when the power comes back on.

It looks neat, but when you realize it's just another battery powered clock doing the setting, it's not as neat anymore.

A lot of people think these clocks are getting the time from somewhere else, but they aren't.

So how come the clock I have that sets itself knew what time it was even when it was brand new, and somehow knows when I am in a different timezone.

And to top it all off, knows when to change back and forth from daylight savings.

 

[skace]

Ok so this thread got me looking for a new alarm clock, however I cannot find one that meets this criteria:
- Displays dual alarms as well as time here
- Uses a lithium ion battery and recharges it, utilizes it to display time even when power is out (shouldn't this be pretty basic? my ipod can display time for like 9 hours on it's battery - possibly longer)
- Syncs with atomic time (not this factory preset shit)

Otherwise, suggest best alarm clocks.

 

[dainthomas]

Originally posted by: sswingle

Originally posted by: LTC8K6
Those clocks that were all over TV a while ago that "set themselves" when the power comes back on are actually just 2 seperate clocks. One is powered by a very long life lithium battery and tells the main clock what time it is. That is how they "set themselves" when the power comes back on.

It looks neat, but when you realize it's just another battery powered clock doing the setting, it's not as neat anymore.

A lot of people think these clocks are getting the time from somewhere else, but they aren't.

So how come the clock I have that sets itself knew what time it was even when it was brand new, and somehow knows when I am in a different timezone.

And to top it all off, knows when to change back and forth from daylight savings.

Magic!!!!!

 

[Onceler]

Originally posted by: NSFW

Originally posted by: sdifox

Originally posted by: NSFW

Originally posted by: sdifox
I wake up 5 min before the alarm goes anyway. But yes, battery backup alarms are nice.

You're one of those people huh? I had an ex like that. If I had to be up at 8, she would nudge me awake at 7:55. "What time do you have to be up?"
Look at clock.
"In 5 minutes you stup....." roll over and catch 5 more minutes.

I am not young anymore so I can't handle it but about 10 years ago, I was used to 4hr of sleep. Of course it's very deep sleep, people could have robbed me blind and I wouldn't know.

Alarm is the backup, in case I have one of those days when I am exhausted and can't get up on my own.

Now I get 5.5 hours on weeknights and take 2-3 hr naps on weekends

Naps rock. I do believe they are proof of God's love for us.

thats beer

 

[dmw16]

Originally posted by: Onceler
it would seem to me that a cheap capacitor would keep it going on those times the power blinks instead I always have about ten clocks to set each and every time the power goes off

capacitors typically discharge quickly, not over time. So it seems to me that a simple capacitor would simply suck.

Get a watch.

 

[Onceler]

it would only need to hold the charge for a second at most,the kind of power outages I am talking about is where you loose power for like a second just long enough to reset every clock in every appliance

 

[sdifox]

Originally posted by: Onceler
it would only need to hold the charge for a second at most,the kind of power outages I am talking about is where you loose power for like a second just long enough to reset every clock in every appliance

http://www.rhopointcomponents....ucts.asp?recnumber=308

 

[Deviant Grasshopper]

Originally posted by: sdifox

Originally posted by: Onceler
it would only need to hold the charge for a second at most,the kind of power outages I am talking about is where you loose power for like a second just long enough to reset every clock in every appliance

http://www.rhopointcomponents....ucts.asp?recnumber=308

Is that a 1 farad cap? Rofl!

 

[sdifox]

Originally posted by: Deviant Grasshopper

Originally posted by: sdifox

Originally posted by: Onceler
it would only need to hold the charge for a second at most,the kind of power outages I am talking about is where you loose power for like a second just long enough to reset every clock in every appliance

http://www.rhopointcomponents....ucts.asp?recnumber=308

Is that a 1 farad cap? Rofl!

there are much bigger ones of course, it was just a google search for example of memory backup capacitor.

 

[Deviant Grasshopper]

Originally posted by: sdifox

Originally posted by: Deviant Grasshopper

Originally posted by: sdifox

Originally posted by: Onceler
it would only need to hold the charge for a second at most,the kind of power outages I am talking about is where you loose power for like a second just long enough to reset every clock in every appliance

http://www.rhopointcomponents....ucts.asp?recnumber=308

Is that a 1 farad cap? Rofl!

there are much bigger ones of course, it was just a google search for example of memory backup capacitor.

I know, it just seems like a huge capacitor - I'm sure it was random, but still funny!

 

[sdifox]

Originally posted by: Deviant Grasshopper

Originally posted by: sdifox

Originally posted by: Deviant Grasshopper

Originally posted by: sdifox

Originally posted by: Onceler
it would only need to hold the charge for a second at most,the kind of power outages I am talking about is where you loose power for like a second just long enough to reset every clock in every appliance

http://www.rhopointcomponents....ucts.asp?recnumber=308

Is that a 1 farad cap? Rofl!

there are much bigger ones of course, it was just a google search for example of memory backup capacitor.

I know, it just seems like a huge capacitor - I'm sure it was random, but still funny!

I like the Car Audio ones best Big ass can with a small cap inside.

 

[Rubycon]

Those wet caps available up to 5F are excellent for retaining volatile memory during power interruptions. Of course a clock can use a nonvolatile RTC (all in one) chip.

Those flashlights you shake to charge also use wet caps as a "battery". A powerful (neodymium) magnet slides back and forth inside a coil as the light is shaken and the EMF is rectified and used to charge the wet cap which powers an LED or LED's for light. The funny thing about these lights is when they are being charged it looks like a familiar thing that most young males do! :laugh:

Text

 

[sdifox]

Originally posted by: Rubycon
Those wet caps available up to 5F are excellent for retaining volatile memory during power interruptions. Of course a clock can use a nonvolatile RTC (all in one) chip.

Those flashlights you shake to charge also use wet caps as a "battery". A powerful (neodymium) magnet slides back and forth inside a coil as the light is shaken and the EMF is rectified and used to charge the wet cap which powers an LED or LED's for light. The funny thing about these lights is when they are being charged it looks like a familiar thing that most young males do! :laugh:

Text

There are crank style LED flashlight you know...I find the slide style fragile.

http://www.amazon.com/Bealls-D...ashlight/dp/B000AOAOQG

I hope you were talking about crank starting a car...

 

[Rubycon]

Originally posted by: sdifox


There are crank style LED flashlight you know...I find the slide style fragile.

http://www.amazon.com/Bealls-D...ashlight/dp/B000AOAOQG

I hope you were talking about crank starting a car...

Yes but a crank can break making the light useless. At least anyone can shake even if it's partially broken.

A good shake light is very durable but if you really want durability you'd seek out a real light like a surefire.