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PLED vs. LCD

K

Ken C

Jan 1, 1970
0
I bought a Saratoga "PowerMeter." See:
http://www.hamstop.com/popup_details/detail_SARP-PWRMTR.html

Apparently, the dealer was out of the LCD model (non-backlit) and
after delay of a ciouple of months instead shipped me the ($20
higher) PLED model.

Inasmuch as this meter is intended to stay on all the time, I am
concerned that PLED is not the way to go for the display.

I know that non-backlit LCD's last for many (over ten) years. How
long will my yellow-green PLED display last? My inquiries to the
dealer have gone unanswered.

Ken C
 
C

Chris

Jan 1, 1970
0
Ken said:
I bought a Saratoga "PowerMeter." See:
http://www.hamstop.com/popup_details/detail_SARP-PWRMTR.html

Apparently, the dealer was out of the LCD model (non-backlit) and
after delay of a ciouple of months instead shipped me the ($20
higher) PLED model.

Inasmuch as this meter is intended to stay on all the time, I am
concerned that PLED is not the way to go for the display.

I know that non-backlit LCD's last for many (over ten) years. How
long will my yellow-green PLED display last? My inquiries to the
dealer have gone unanswered.

Ken C

Hi, Ken. LED backlights are very reliable. If the power meter is
otherwise the same, the addition of a hundred milliwatts of power
shouldn't change much, and LEDs usually have very long life, as long as
they're not overdriven. LED reliability graphs routinely go past
100,000 hours (over a decade of continuous use). After extended use,
the LED intensity goes down a bit.

If the upgrade was a freebie, consider yourself compensated for the
wait.

Good luck
Chris
 
K

Ken C

Jan 1, 1970
0
Hi, Ken. LED backlights are very reliable. If the power meter is
otherwise the same, the addition of a hundred milliwatts of power
shouldn't change much, and LEDs usually have very long life, as long as
they're not overdriven. LED reliability graphs routinely go past
100,000 hours (over a decade of continuous use). After extended use,
the LED intensity goes down a bit.


Hi, Chris.

These are not the usual LED's. They are new technology organic
LED's,known as OLED or PLED. They last no where near as long as
inorganic LED's. Reliable info is hard to come by. See, e.g.:
http://newsletter.spezial.de/artike...ng&PHPSESSID=4c34240fc7f08e4b87a8e3d1f76abbb1

It looks like they get seriously dim at 10,000 hours -- which is not
even two years.

Ken C
 
B

Bob Myers

Jan 1, 1970
0
Ken C said:
I bought a Saratoga "PowerMeter." See:
http://www.hamstop.com/popup_details/detail_SARP-PWRMTR.html

Apparently, the dealer was out of the LCD model (non-backlit) and
after delay of a ciouple of months instead shipped me the ($20
higher) PLED model.

Inasmuch as this meter is intended to stay on all the time, I am
concerned that PLED is not the way to go for the display.

I'd be concerned about that as well, if the meter is for continuous
use. It is very unusual, at the current state of the art, for any
OLED/PLED material to have a useful life (in terms of mean time
to half-bright) more than 5-10K hours. In other words, somewhere
around a year of continuous use.

Bob M.
 
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