Why are revlimiters uneven?

On 4/05/21 6:36 am, Peeler wrote:
On Tue, 4 May 2021 04:23:43 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the two subnormal sociopathic cretins' endless absolutely idiotic
blather



Peeler's eyes are simple eyespots, not lensed eyes that can resolve images.

On 4/05/21 7:29 pm, Peeler wrote:
On Tue, 4 May 2021 16:36:59 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile asshole's latest troll**** unread



Peeler has no true fins and has six or eight barbels around the mouth
and a single nostril.

On 4/05/21 6:46 pm, Peeler wrote:
On Mon, 3 May 2021 20:01:29 -0600, lowbrowwoman, the endlessly driveling,
troll-feeding, senile idiot, blabbered again:

On 05/03/2021 10:13 AM, Commander Kinsey wrote:
Is it to warn you? Even my toilet cistern can slow down smoothly.

On cars? Yes. Cutting the engine abruptly when you hit the red line
wouldn't be good so they simulate ignition breakup to give you a hint.

Just what makes the unwashed Scottish ****** so irresistible to some of you
disgusting senile assholes? Is it the fact that he admitted that he never
wears any underwear? Or is it the fact that he rarely washes? Or both? YUCK!

Instead of vertically articulating jaws like Gnathostomata (vertebrates
with jaws), Peeler has a pair of horizontally moving structures with
tooth-like projections for pulling off food.

On Tue, 4 May 2021 20:53:18 +1200, Peter Keller, the dumb gay little
masochist, blabbered again:

Just what makes the unwashed Scottish ****** so irresistible to some of you
disgusting senile assholes? Is it the fact that he admitted that he never
wears any underwear? Or is it the fact that he rarely washes? Or both? YUCK!

Instead of vertically articulating jaws like Gnathostomata (vertebrates
with jaws), Peeler has a pair of horizontally moving structures with
tooth-like projections for pulling off food.

You must be the dumbest gay ****ty byker in the UK's streets! LOL

OK what do they use then, All I remember from my brief experience trying to
dim leds was that the most successful way of doing that was by duty cycle,
ie on to off times with them driven by some kind of oscillator with variable
mark space ratios. However it is obvious that even the briefest of ons and
the longest offs tends to still be visible in most cases, and not terribly
accurate if many leds are used as the load, there being a spread of
linearity in any given number.
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Rod Speed" wrote in message
...
Brian Gaff (Sofa) wrote

Never saw the original post.

He ****ed up uk.d-I-y he had uk.diy

There is a holding current in a triac, and once the current drops below
this a kind of Hysteresis occurs so you need to turn it up to get it
conducting again.

leds don’t dim using triacs but still cant be dimmed right down close
to zero for use as a nightlight with the philips hues particularly.

Rod Speed wrote
Commander Kinsey wrote
Is it to warn you?

No idea what you are on about this time.
Even my toilet cistern can slow down smoothly.

Rather different technology. Many dimmers cant,
they cut off abruptly at the lower light levels.

Brian Gaff (Sofa) wrote

OK what do they use then,

A controlled current regulator.

All I remember from my brief experience trying to dim leds was that the
most successful way of doing that was by duty cycle, ie on to off times
with them driven by some kind of oscillator with variable mark space
ratios.

It is much better to control the current thru the leds.

And it makes no sense to use a triac when varying
the mark/space ratio with leds anyway.

However it is obvious that even the briefest of ons and the longest offs
tends to still be visible in most cases,

That’s mad, leds have very little inertia.

and not terribly accurate if many leds are used as the load, there being a
spread of linearity in any given number.

That would be a mad approach too.

Rod Speed wrote
Brian Gaff (Sofa) wrote

Never saw the original post.

He ****ed up uk.d-I-y he had uk.diy

There is a holding current in a triac, and once the current drops below
this a kind of Hysteresis occurs so you need to turn it up to get it
conducting again.

leds don’t dim using triacs but still cant be dimmed right down close
to zero for use as a nightlight with the philips hues particularly.

Rod Speed wrote
Commander Kinsey wrote
Is it to warn you?

No idea what you are on about this time.
Even my toilet cistern can slow down smoothly.

Rather different technology. Many dimmers cant,
they cut off abruptly at the lower light levels.

On 04/05/2021 13:23, Brian Gaff (Sofa) wrote:
OK what do they use then, All I remember from my brief experience trying to
dim leds was that the most successful way of doing that was by duty cycle,
ie on to off times with them driven by some kind of oscillator with variable
mark space ratios. However it is obvious that even the briefest of ons and
the longest offs tends to still be visible in most cases, and not terribly
accurate if many leds are used as the load, there being a spread of
linearity in any given number.

PWM is the cheapest way as it needs no other component.

For a small improvement in efficiency then a constant current source
would be best but obviously costs more.

"Fredxx" wrote in message
...
On 04/05/2021 13:23, Brian Gaff (Sofa) wrote:
OK what do they use then, All I remember from my brief experience trying
to
dim leds was that the most successful way of doing that was by duty
cycle,
ie on to off times with them driven by some kind of oscillator with
variable
mark space ratios. However it is obvious that even the briefest of ons
and
the longest offs tends to still be visible in most cases, and not
terribly
accurate if many leds are used as the load, there being a spread of
linearity in any given number.

PWM is the cheapest way as it needs no other component.

For a small improvement in efficiency then a constant current source would
be best but obviously costs more.

Doesn’t necessarily cost anything more at all with leds. Same price as
voltage regulators.

On Wed, 5 May 2021 02:31:42 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile asshole's latest troll**** unread

02:31??? AGAIN? Is your senility not letting you sleep in again, you
abnormal senile troll?

--
Website (from 2007) dedicated to the 86-year-old senile Australian
cretin's pathological trolling:
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

On Wed, 5 May 2021 03:33:20 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile pest's latest troll**** unread

--
Xeno to senile Rodent:
"You're a sad old man Rod, truly sad."
MID: