Question for the trick-tricians

John Mallard said:

I'm guessing that flashing uses up batteries faster but I
have no real idea if this is correct.

No, flashing mode uses much les power, because....the
lights are only on for part of the time (it's
theoretically possible that they could be brighter for the
time that they are on, but I don't believe this is usually
the case and even if so it is insufficient to use up as
much power overall).

300h vs 50h battery life, IIRC, for a particular red LED
light I have.

James

On Thu, 8 Apr 2004 23:25:02 +0100, "John Mallard" <not_me@all> wrote
in message <[email hidden]>:

Quoted message said:

Today I was idly wondering about my led flashers. Which
uses up the battery faster: The flash mode? or the steady
state mode?

Steady mode.

--
Guy
===
May contain traces of irony. Contents liable to settle after
posting. chapmancentral.co.ukchapmancentral.co.ukOpen ↗

88% of helmet statistics are made up, 65% of them at
Washington University

"John Mallard" <not_me@all> wrote in message
"]news:[email hidden]...

Quoted message said:

Today I was idly wondering about my led flashers. Which
uses up the battery faster: The flash mode? or the steady
state mode?

I am not interested in the answer for any practical
reason. It's just

that

Quoted message said:

when I ask myself that sort of question and I can't figure
out the answer for myself, I can't rest until I know.

I'm guessing that flashing uses up batteries faster but I
have no real

idea

Quoted message said:

if this is correct.

Depends. Depends on the design of the circuit especially at
the IC level. LED's themselves have extremely low power
consumption, so relatively the circuit required to make them
flash can be just as consumptive.

And I have seen figures quoted from bike light product
literature that show this can be true in practice too.

--
Mike W

John Mallard said:

Today I was idly wondering about my led flashers. Which
uses up the battery faster: The flash mode? or the steady
state mode?

Cateye give the battery run times for their LED jobs that
have both flashing and steady modes. Batteries last longer
in flashing mode for the EL200 at least.

~PB

"John Mallard" <not_me@all> wrote in message news:<[email hidden]>...

Quoted message said:

Today I was idly wondering about my led flashers. Which
uses up the battery faster: The flash mode? or the steady
state mode?

I am not interested in the answer for any practical
reason. It's just that when I ask myself that sort of
question and I can't figure out the answer for myself, I
can't rest until I know.

I'm guessing that flashing uses up batteries faster but I
have no real idea if this is correct.

Anyone?

Wiggle's site gives the runtimes in both modes - flashing
uses less power.

wiggle.co.ukwiggle.co.ukOpen ↗

Simon M.

John Mallard not_me@all said:

Today I was idly wondering about my led flashers. Which
uses up the battery faster: The flash mode? or the steady
state mode?

I am not interested in the answer for any practical
reason. It's just that when I ask myself that sort of
question and I can't figure out the answer for myself, I
can't rest until I know.

I'm guessing that flashing uses up batteries faster but I
have no real idea if this is correct.

Depends. The flash circuitry might use more power than teh
non-flash circuitry. The LED might be brighter when
flashing than when solid. The manufacturer could make it be
either way.

regards, Ian SMith
--
|\ /| no .sig
|o o|
|/ \|

flashing uses less, as lights are on less.
"John Mallard" <not_me@all> wrote in message
"]news:[email hidden]...

Quoted message said:

Today I was idly wondering about my led flashers. Which
uses up the battery faster: The flash mode? or the steady
state mode?

I am not interested in the answer for any practical
reason. It's just

that

Quoted message said:

when I ask myself that sort of question and I can't figure
out the answer for myself, I can't rest until I know.

I'm guessing that flashing uses up batteries faster but I
have no real

idea

Quoted message said:

if this is correct.

Anyone?

--
Cheerful Peddling John Mallard