Using mobile phone as an internet radio

"David Woolley" wrote in message
...
William Sommerwerck wrote:

My new computer has a solid-state "hard disk", and you
wouldn't believe how fast it boots up, or how fast programs
start to run.

These, if flash memory, do have a definite wear out mechanism,
although they do try to avoid writing to the same spot, even if the
software does, to mitigate this.

Correct. SSDs are an exception. They contain "leveling" software that makes
sure the disk is written to evenly. The Crucial disk I use is spec'd at
about 40TB of total writes.

"JoRob64"
"Phil Allison"
"Graham."


An incandescent light bulb is a good example, If it lasts 1000 hours
when run continuously, its life will be considerably shorter if run
(say) 4 hours a day and the time it is on added up.


** Where ever did you get that nonsense from ??

Some web forum ?

I believe turning the bulbs on and off can induce thermal shock which
causes premature failure.


** ******** it does.

There are many applications where incandescent lamps are turned on and off
constantly and their life span is the same.

The OP's hypothetical example ( don't ya just LOVE them) is typical of
domestic lamp use.

****wit.


..... Phil

Phil Allison wrote:
"JoRob64"
"Phil Allison"
"Graham."


An incandescent light bulb is a good example, If it lasts 1000
hours when run continuously, its life will be considerably shorter
if run (say) 4 hours a day and the time it is on added up.


** Where ever did you get that nonsense from ??

Some web forum ?

I believe turning the bulbs on and off can induce thermal shock which
causes premature failure.


** ******** it does.

There are many applications where incandescent lamps are turned on
and off constantly and their life span is the same.

The OP's hypothetical example ( don't ya just LOVE them) is typical of
domestic lamp use.

****wit.


.... Phil

No Phil, that is not correct. If he only listens to Rap , its lifespan will
be shortend greatly.
Buffalo

On Oct 2, 6:28*pm, "Phil Allison" wrote:
"Graham."



An incandescent light bulb is a good example, If it lasts 1000 hours
when run continuously, its life will be considerably shorter if run
(say) 4 hours a day and the time it is on added up.

** Where ever did you get that nonsense from ??

* * *Some web forum ?

He is right, the stresses involved in the turn-on of the bulb each
time is equal to several hours of continuous running. If you cycle a
bulb on and off every few seconds, the total on time before the bulb
fails will be only a few hundered hours for a 1000 hour rated bulb,

On Wed, 3 Oct 2012 09:28:13 +1000, "Phil Allison"
wrote:

"Graham."

An incandescent light bulb is a good example, If it lasts 1000 hours
when run continuously, its life will be considerably shorter if run
(say) 4 hours a day and the time it is on added up.

** Where ever did you get that nonsense from ??

It's not nonsense. The inrush current of a cold filament can shorten
the filament life. That's why light bulbs usually blow up when you
turn them on, not while they're running. The induced magnetic field
also tends to "twang" the filament, which can break the filament if it
were somehow mechanically weakened.

While attending kollege in the 1960's, I worked for a short time as a
non-union projectionist at a movie theater. Besides babysitting the
projectors, I had to deal with the flashing light bulb marquee. I
vaguely recall that there were something like 2000 40 watt light
bulbs. Roughly once per week, my job was to replace the blown bulbs
from a rickety pre-OSHA 20ft wooden ladder, sometimes at night. I
didn't keep count, but every week, we would lose about 20 light bulbs.
Doing the math, that means after about 2 years, ALL the light bulbs
would have been replaced at least once. At 8 hrs run per day, that's
800 hrs lifetime which isn't all that great, especially since we were
running the bulbs at reduced voltage to improve the lifetime. We used
the same bulbs in the theater foyer and lobby, where they were NOT
cycled on and off like the flashing marquee. I rarely replaced those
bulbs and they seemed to last forever.

Some web forum ?

If you repeat something often enough, it eventually becomes dogma.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

"Tom Biasi" wrote in message
...
On 10/2/2012 5:21 PM, jim stone wrote:
Not being able to find a small internet radio to buy we liked, we got
mobile
phone with which we link with wi-fi to a modem router, and use it as an
internet radio.

Keeping the phoned plugged into its charger all the time, we are using it
to
play *all-day* background classical music through an amplifier and
speakers.

Since the phone has no 'moving parts' unlike a computer, we are wondering
if
this continuous playing all day of the phone is going to shorten its
working
life ?



Using anything shortens it's working life.

Seems to go against the whole ethos of exercising. Never get out of bed and
live forever ...

"jim stone" wrote in message
...
Not being able to find a small internet radio to buy we liked, we got
mobile phone with which we link with wi-fi to a modem router, and use it
as an internet radio.

Keeping the phoned plugged into its charger all the time, we are using it
to play *all-day* background classical music through an amplifier and
speakers.

Since the phone has no 'moving parts' unlike a computer, we are wondering
if this continuous playing all day of the phone is going to shorten its
working life ?

You'll have dropped it well before it wears out :-). BTW, a cheap PC
speaker set might be handy if you want a little more volume. And you can
probably find a decent streaming client if you have your music sitting on a
PC somewhere.

Paul DS.

William Sommerwerck wrote:
There are many factors that cause something to fail. I you
don't use it, it has no working life. I don't wish to play
semantics but if you use it you are using up its working life.

Not so. With mechanical devices, regular moderate use provides a longer
useful lifetime than using the device only rarely.



Yes, this is also true with EM (Electro-Mechanical) devices like
pinballs and jukeboxes (and other arcade games)- regular use keeps the
contacts on the relays clean from their designed in rubbing action
(overtravel). If the machine is not used then the contacts tend to
oxidize and not pass electrical current well leading to service calls.

HOWEVER the topic here is a solid state mobile phone - and that device
really doesn't care too much if it is on or off as long as it operates
in a reasonable temperature range (around 20 - 35C). Chances are it will
be obsolete before it fails if it runs cool to the touch.

Heat is the enemy of electronics, mostly capacitors - and their life
gets quite short the warmer the operating temperature gets above
50C...just read the spec sheets. Typical electrolytics endurance: - up
to 5,000 Hours at 105°C or about 210 days (7 months) running 24/7.

John :-#)#

--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

Jeff Liebermann wrote:
On Wed, 3 Oct 2012 09:28:13 +1000, "Phil Allison"
wrote:

"Graham."

An incandescent light bulb is a good example, If it lasts 1000 hours
when run continuously, its life will be considerably shorter if run
(say) 4 hours a day and the time it is on added up.
** Where ever did you get that nonsense from ??

It's not nonsense. The inrush current of a cold filament can shorten
the filament life. That's why light bulbs usually blow up when you
turn them on, not while they're running. The induced magnetic field
also tends to "twang" the filament, which can break the filament if it
were somehow mechanically weakened.

While attending kollege in the 1960's, I worked for a short time as a
non-union projectionist at a movie theater. Besides babysitting the
projectors, I had to deal with the flashing light bulb marquee. I
vaguely recall that there were something like 2000 40 watt light
bulbs. Roughly once per week, my job was to replace the blown bulbs
from a rickety pre-OSHA 20ft wooden ladder, sometimes at night. I
didn't keep count, but every week, we would lose about 20 light bulbs.
Doing the math, that means after about 2 years, ALL the light bulbs
would have been replaced at least once. At 8 hrs run per day, that's
800 hrs lifetime which isn't all that great, especially since we were
running the bulbs at reduced voltage to improve the lifetime. We used
the same bulbs in the theater foyer and lobby, where they were NOT
cycled on and off like the flashing marquee. I rarely replaced those
bulbs and they seemed to last forever.

Some web forum ?

If you repeat something often enough, it eventually becomes dogma.


Well-designed lighting circuits provide 'keep-alive' voltage to the
filaments to reduce most of the inrush current. Might have put you out
of that job though...

John :-#)#

--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

Just like not using it does in fact.

Brian

--
From the Sofa of Brian Gaff Reply address is active
"Tom Biasi" wrote in message
...
On 10/2/2012 5:21 PM, jim stone wrote:
Not being able to find a small internet radio to buy we liked, we got
mobile
phone with which we link with wi-fi to a modem router, and use it as an
internet radio.

Keeping the phoned plugged into its charger all the time, we are using it
to
play *all-day* background classical music through an amplifier and
speakers.

Since the phone has no 'moving parts' unlike a computer, we are wondering
if
this continuous playing all day of the phone is going to shorten its
working
life ?



Using anything shortens it's working life.