LED car lights flicker - no need!

[Major Scott]

On Wed, 24 Apr 2013 21:24:13 +0100, Adrian <toomany2cvs@gmail.com> wrote:

On Wed, 24 Apr 2013 21:10:52 +0100, Major Scott wrote:

On Wed, 24 Apr 2013 20:36:32 +0100, bm <a@b.com> wrote:
Fuck a duck, they DID teach you something.

I have a fucking degree in it (not that it gets you a job).

I rather suspect your problem in finding gainful employment lies in your
personality, not your qualifications.

It lies in the fact that the sort of job I apply for attracts up to 180 applicants.

--
"I must take every precaution not to get pregnant," said Judi to her best friend Monika.
"But I thought you said your hubby had a vasectomy," Monika responded.
"He did. That's why I have to take every precaution!" shrieked Judi.

 

[Major Scott]

On Wed, 24 Apr 2013 21:35:56 +0100, Adrian <toomany2cvs@gmail.com> wrote:

On Wed, 24 Apr 2013 21:26:17 +0100, Major Scott wrote:

I have a fucking degree in it (not that it gets you a job).

I rather suspect your problem in finding gainful employment lies in
your personality, not your qualifications.

It lies in the fact that the sort of job I apply for attracts up to 180
applicants.

So apply for several hundred jobs.

I'm applying for about 2 a week at the moment. They seem to come like London Buses.

Except that, even if you were the only applicant, any sane employer would
rather continue searching than have to deal with you for eight hours a
day, five days a week.

You've never met me. I can be extremely polite and diplomatic when required.

--
Can fat people go skinny-dipping?

 

[Adrian]

On Wed, 24 Apr 2013 21:10:52 +0100, Major Scott wrote:

On Wed, 24 Apr 2013 20:36:32 +0100, bm <a@b.com> wrote:
Fuck a duck, they DID teach you something.

I have a fucking degree in it (not that it gets you a job).

I rather suspect your problem in finding gainful employment lies in your
personality, not your qualifications.

 

[Adrian]

On Wed, 24 Apr 2013 21:26:17 +0100, Major Scott wrote:

I have a fucking degree in it (not that it gets you a job).

I rather suspect your problem in finding gainful employment lies in
your personality, not your qualifications.

It lies in the fact that the sort of job I apply for attracts up to 180
applicants.

So apply for several hundred jobs.

Except that, even if you were the only applicant, any sane employer would
rather continue searching than have to deal with you for eight hours a
day, five days a week.

 

[Dave Plowman]

In article <op.wv17zex82eh2io@red.lan>,
Major Scott <no@spam.com> wrote:

Take for example a 6 volt DC supply connected to an LED in series with a
200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the resistor.

Now change the supply to 4V.
2V 10mA at the LED, 2V 10mA in the resistor.

Not so, since the forward voltage drop of an LED is a constant.

Lowering voltage will dim the LED.

That bit is at least correct.

--
*Experience is something you don't get until just after you need it.*

Dave Plowman dave@davesound.co.uk London SW 12

 

[Dave Plowman]

In article <51783438$0$49048$c3e8da3$40cb80c2@news.astraweb.com>,
bm <a@b.com> wrote:

Take for example a 6 volt DC supply connected to an LED in series with
a 200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the resistor.

Now change the supply to 4V.
2V 10mA at the LED, 2V 10mA in the resistor.

Fuck a duck, they DID teach you something.

That makes two of you who failed GCE electronics.

--
*Why is the time of day with the slowest traffic called rush hour?

Dave Plowman dave@davesound.co.uk London SW 12

 

[Adrian]

On Wed, 24 Apr 2013 21:43:32 +0100, Major Scott wrote:

It lies in the fact that the sort of job I apply for attracts up to
180 applicants.

So apply for several hundred jobs.

I'm applying for about 2 a week at the moment.

Which, on the law of averages, means you won't find a job for nearly two
years.

 

[Clive George]

On 24/04/2013 23:53, Dave Plowman wrote:

In article <51783438$0$49048$c3e8da3$40cb80c2@news.astraweb.com>,
bm <a@b.com> wrote:
Take for example a 6 volt DC supply connected to an LED in series with
a 200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the resistor.

Now change the supply to 4V.
2V 10mA at the LED, 2V 10mA in the resistor.

Fuck a duck, they DID teach you something.

That makes two of you who failed GCE electronics.

Nah, Mr Scott actually got something about right this time. Voltage drop
across an LED doesn't change that much - his example isn't exact, but
close enough as a demonstration.

Eg http://www.oksolar.com/led/led_color_chart.htm shows there can be
0.1V voltage drop difference between the 10 and 20mA cases, at 2V (for
some sample devices). So his example should use 6.1V and 4V.

 

[bm]

"Dave Plowman" <dave@davesound.co.uk> wrote in message
news:53419fdcd1dave@davenoise.co.uk...

In article <51783438$0$49048$c3e8da3$40cb80c2@news.astraweb.com>,
bm <a@b.com> wrote:
Take for example a 6 volt DC supply connected to an LED in series with
a 200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the resistor.

Now change the supply to 4V.
2V 10mA at the LED, 2V 10mA in the resistor.

Fuck a duck, they DID teach you something.

That makes two of you who failed GCE electronics.

Sorry, Dave, but I think you'll find that his 'sums' are pretty much
correct, amazingly.

 

[bm]

"bm" <a@b.com> wrote in message
news:51786764$0$3690$c3e8da3$40cb80c2@news.astraweb.com...

"Dave Plowman" <dave@davesound.co.uk> wrote in message
news:53419fdcd1dave@davenoise.co.uk...
In article <51783438$0$49048$c3e8da3$40cb80c2@news.astraweb.com>,
bm <a@b.com> wrote:
Take for example a 6 volt DC supply connected to an LED in series with
a 200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the resistor.

Now change the supply to 4V.
2V 10mA at the LED, 2V 10mA in the resistor.

Fuck a duck, they DID teach you something.

That makes two of you who failed GCE electronics.

Sorry, Dave, but I think you'll find that his 'sums' are pretty much
correct, amazingly.

Treat the LED as a 2V Zener and you won't go far wrong.

 

[Dave Plowman]

In article <51786764$0$3690$c3e8da3$40cb80c2@news.astraweb.com>,
bm <a@b.com> wrote:

"Dave Plowman" <dave@davesound.co.uk> wrote in message
news:53419fdcd1dave@davenoise.co.uk...
In article <51783438$0$49048$c3e8da3$40cb80c2@news.astraweb.com>, bm
a@b.com> wrote:
Take for example a 6 volt DC supply connected to an LED in series
with a 200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the
resistor.

Now change the supply to 4V. 2V 10mA at the LED, 2V 10mA in the
resistor.

Fuck a duck, they DID teach you something.

That makes two of you who failed GCE electronics.

Sorry, Dave, but I think you'll find that his 'sums' are pretty much
correct, amazingly.

I must be from a different generation. 'Sums' are either correct or not.
Anything else is a guess.

--
*Gun Control: Use both hands.

Dave Plowman dave@davesound.co.uk London SW 12

 

[bm]

"Dave Plowman" <dave@davesound.co.uk> wrote in message
news:5341a2d2d9dave@davenoise.co.uk...

In article <51786764$0$3690$c3e8da3$40cb80c2@news.astraweb.com>,
bm <a@b.com> wrote:

"Dave Plowman" <dave@davesound.co.uk> wrote in message
news:53419fdcd1dave@davenoise.co.uk...
In article <51783438$0$49048$c3e8da3$40cb80c2@news.astraweb.com>, bm
a@b.com> wrote:
Take for example a 6 volt DC supply connected to an LED in series
with a 200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the
resistor.

Now change the supply to 4V. 2V 10mA at the LED, 2V 10mA in the
resistor.

Fuck a duck, they DID teach you something.

That makes two of you who failed GCE electronics.

Sorry, Dave, but I think you'll find that his 'sums' are pretty much
correct, amazingly.

I must be from a different generation. 'Sums' are either correct or not.
Anything else is a guess.

How correct do you wanna be? 10mA/11mA 20mA/21mA?
You have to admit he's in the right ballpark or thereabouts.
I'm still recovering.
PHucker with a clue? Blimey.

 

[Major Scott]

On Wed, 24 Apr 2013 23:51:01 +0100, Dave Plowman <dave@davesound.co.uk> wrote:

In article <op.wv17zex82eh2io@red.lan>,
Major Scott <no@spam.com> wrote:
Take for example a 6 volt DC supply connected to an LED in series with a
200 ohm resistor. 2V 20mA at the LED, 4V 20mA in the resistor.

Now change the supply to 4V.
2V 10mA at the LED, 2V 10mA in the resistor.

Not so, since the forward voltage drop of an LED is a constant.

Yes, and? I said 2V at the LED on both counts.

Lowering voltage will dim the LED.

That bit is at least correct.

So they could do that for tail lights then.

--
Seven wheelchair athletes have been banned from the Paralympics after they tested positive for WD40.

 

[Mike Tomlinson]

En el artículo <kl9hfo$ro2$1@speranza.aioe.org>, Adrian
<toomany2cvs@gmail.com> escribió:

I'm applying for about 2 a week at the moment.

Which, on the law of averages, means you won't find a job for nearly two
years.

Kinda explains why he spends so much time posting shite to usenet, when
he could be looking for gainful employment.

--
(\_/)
(='.'=)
(")_(")

 

[DavidR]

"Major Scott" <no@spam.com> wrote in message

Some xenon headlights, yes. But LED brakelights are not too bright.

When you get stuck behind a new Audi (can't remember whether it was A1 or
A3) in a slow moving queue you might change your mind. Though it would help
if people hadn't developed the habit of using the pedal as a foot rest. I
find that popping on the handbrake allows the foot to find a far more
relaxed position.

 

[Ian Jackson]

In message <klaoma$eb$1@dont-email.me>, DavidR <dr6092@gmail.com> writes

"Major Scott" <no@spam.com> wrote in message

Some xenon headlights, yes. But LED brakelights are not too bright.

When you get stuck behind a new Audi (can't remember whether it was A1 or
A3) in a slow moving queue you might change your mind. Though it would help
if people hadn't developed the habit of using the pedal as a foot rest. I
find that popping on the handbrake allows the foot to find a far more
relaxed position.

Not many people know that if you are obviously going to be stationary

for more than a few seconds, you should apply the handbrake.
Unfortunately, that won't stop them using the pedal as a foot rest.
--
Ian

 

[Mr Pounder]

"Major Scott" <no@spam.com> wrote in message
newsp.wv2buus82eh2io@red.lan...

On Wed, 24 Apr 2013 21:35:56 +0100, Adrian <toomany2cvs@gmail.com> wrote:

On Wed, 24 Apr 2013 21:26:17 +0100, Major Scott wrote:

I have a fucking degree in it (not that it gets you a job).

I rather suspect your problem in finding gainful employment lies in
your personality, not your qualifications.

It lies in the fact that the sort of job I apply for attracts up to 180
applicants.

So apply for several hundred jobs.

I'm applying for about 2 a week at the moment. They seem to come like
London Buses.

Except that, even if you were the only applicant, any sane employer would
rather continue searching than have to deal with you for eight hours a
day, five days a week.

You've never met me. I can be extremely polite and diplomatic when
required.

{Falls off chair}

--
Can fat people go skinny-dipping?

 

[Partac]

"Steve Firth" wrote in message
news:2082196069388490010.841939%steve%-malloc.co.uk@news.eternal-september.org...

Dave Plowman <dave@davesound.co.uk> wrote:

In article <op.wv0oip1h2eh2io@red.lan>,
Major Scott <no@spam.com> wrote:
But in any case it is irrelevant. It's the current they are driven with
that matters - not the voltage.

If this pulsing can make them appear brighter than they are, why don't
they use it in domestic LED bulbs?

No idea. They are crap and I wouldn't have one in the house.

The LED bulbs I have used have been anything but "crap". They use 1/10th
the electricity of equivalent halogen bulbs and can be bought as flood or
spotlight versions.

--
<•DarWin><|
_/ _/

Yes, agreed. They are also available at the moment in cool white or warm
white, which can be used to suit the mood you wish to create.
We have been using them for about 6 months now, and are extremely happy with
the results.

 

[Major Scott]

On Thu, 25 Apr 2013 10:05:28 +0100, Ian Jackson <ianREMOVETHISjackson@g3ohx.demon.co.uk> wrote:

In message <klaoma$eb$1@dont-email.me>, DavidR <dr6092@gmail.com> writes
"Major Scott" <no@spam.com> wrote in message

Some xenon headlights, yes. But LED brakelights are not too bright.

When you get stuck behind a new Audi (can't remember whether it was A1 or
A3) in a slow moving queue you might change your mind. Though it would help
if people hadn't developed the habit of using the pedal as a foot rest. I
find that popping on the handbrake allows the foot to find a far more
relaxed position.

Not many people know that if you are obviously going to be stationary
for more than a few seconds, you should apply the handbrake.
Unfortunately, that won't stop them using the pedal as a foot rest.

Why bother? It means it takes you longer and more effort to get going again.

Leaving your foot on the brake doesn't expend any energy, you use the weight of your leg.

Handbrakes are for people with poor clutch control.

--
My younger sister was having one of her first gynecological appointments and she had some questions for the doctor.
"Doctor" she asked, "I can't ask my parents, They would kill me but my boyfriend wants to have anal sex. I don't know what to tell him, I mean I don't know anything about it. Can I get pregnant?"
The kindly old doctor smiled whimsically and replied "Of course, you can my dear. Where do you think lawyers come from?"

 

[Major Scott]

On Thu, 25 Apr 2013 09:18:06 +0100, DavidR <dr6092@gmail.com> wrote:

"Major Scott" <no@spam.com> wrote in message

Some xenon headlights, yes. But LED brakelights are not too bright.

When you get stuck behind a new Audi (can't remember whether it was A1 or
A3) in a slow moving queue you might change your mind.

I'm sure I must have been behind one at some point. I think you're like a friend of mine who hates being behind anyone with brakelights on in a queue. How anyone can think 21 watts is bright I don't know. It's nowhere near as dazzling or distracting than headlights of oncoming cars.

--
Mrs. Jones is having her house painted, and her husband comes home from work and leans against the freshly painted wall.
The next day, she says to the painter, "You wanna see where my husband put his hand last night?"
He sighs and says, "Look lady, I got a tough day's work ahead of me. Why don't you just make us a cup of tea?"