Incandescent bulbs - decision, plus Edison Screw question

"Bill Wright" wrote in message
...
Norman Wells wrote:
Bill Wright wrote:
Steve Thackery wrote:

Should I try homosexuality too?

You mean you haven't already?

If you look down when you're wanking that's homosexuality.

I thought that was auto-eroticism. Or is that something to do with cars?

Bloke (young bloke, about thirty) told me the other day he always gets a
hard on when he gives his children money. That's weird innit?

That's incestuous prostitution.

--
Max Demian

"Steve Thackery" wrote in message
...
Norman Wells wrote:

There's no point in trying just for the sake of trying. If there's
no obvious advantage to be gained, and there apparently isn't, why
bother?

Well, that does seem to be a rather passive approach to life. Do you
not do anything out of curiosity? You never look round a shop? An art
gallery?

Actually, I don't believe you really think that way - I think you are
just trying to justify your slightly unusual stance on LED lamps.

Actually one argument against LED lamps is they're very expensive and if
they fail after a year or two you may have difficulty getting a replacement,
especially it the dealer is distant, closed down, or doesn't believe you.
Incandescents (and CFLs now) are cheap so it doesn't really matter if they
fail early.

--
Max Demian

On Wed, 28 May 2014 09:41:48 +0100, "Norman Wells"
wrote:

Have we still not convinced you to give LED bulbs a try? :-) The
initial purchase cost is higher than for filaments, but I sometimes
justify a purchase to myself by deciding its cost has come from the
"curiosity fund", and is thus valid because it could be interesting.

Go on, you know you want to.

But why should I? What's in it for me, or anyone else for that
matter? What good will it do?

It may enlighten you, in more ways than one.

Are they 'progress' or just 'different'?

There's an easy way to find out, and it's not very expensive.

You can't know the value of a piece of knowledge until after you know
it, so if the value of the knowledge is what determines the value of
the effort needed to get to know it, you'll never know it at all.
Perhaps you need to apply a value to curiosity.

Rod.

In article ,
Bill Wright wrote:

People seem to be saying that LEDs are comparable, in terms of light
output versus power consumption, to CFLs and halogens.

I haven't seen anyone say they are comparable to halogens. Their
light efficiency seems to slightly higher than that of CFLs, for
60W-or-less incandescent equivalents.

-- Richard

"Norman Wells" wrote in message
...
Roderick Stewart wrote:
On Tue, 27 May 2014 22:07:47 +0100, "Norman Wells"
wrote:

...I don't have any 40W or 60W bulbs. What can I get to replace
100W or even 150W incandescents?

Well, you can get any number of CFLs or LEDs.

The only problem is that they won't be anywhere near as bright.

What? Individually they might not be as bright, but we're suggesting
several of them added together. You do realise that, don't you?

Perhaps they ought to come with an extension socket on the bulb end so we
can daisy chain them together then?

Most people don't have limitless fittings.

A two way lampholder adaptor? You can still get the ES ones. ( I don't mean
the asymmetrical ones used to plug your iron in.)
http://www.ebay.com/itm/Leviton-R52-...4#ht_735wt_662

--
Max Demian

"Roderick Stewart" wrote in message
...
On Tue, 27 May 2014 19:14:29 +0100, critcher
wrote:

How are you guys going in your domestic bulb strategies?


they are lamps, bulbs go in the ground

Bulbous and pedantic.


not to my electrical friend who insisted on the correct term, probably
due to him being trained in the early sixties.

I've seen lamps you can put in the ground.

And they don't even need to be connected to the mains.

--
Max Demian

In article , PeterC
wrote:
On Tue, 27 May 2014 12:12:56 -0500, Steve Thackery wrote:

PeterC wrote:

This has me a little puzzled: a 60W GLS is 800-od lumens; an 11W CFL
is about the same (880 often quoted, but that's when new); a 10W LED
is usually 800 lumens, so all roughly the same. If the CFL and LED
have the same input and (useful) output, surely the rest must be heat.

Yes indeed. So we are saying that the heat output from the 800 lumen
LED is much the same as that from the 800 lumen CFL. Agreed? So they
have much the same efficiency, yes?

As the LED is smaller, I'd expect the surface temperature to be
higher.

Remember that some of the heat comes from the electronics, but yes,
that's right.

It's just that the LEDs I have (biggest is only 6.3W) don't seem to get
very hot. If I were to use a 10W LED I would notice the temperature.

How about a (stage) fitting that uses 18 x 5 watt, 5 colour, LEDs? It will
run a lot cooler than an incandescent which gives tehsame light output.

--
From KT24

Using a RISC OS computer running v5.18

In article ,
Ian Field wrote:
Bearing in mind some of the dangerous direct-connected mains
crap posted on sites e.g. instructables.com,

You should get a job as a HSE jobsworth.

You may think that, then again ...

I'm talking stuff like battery chargers that have a dropper
capacitor (any old ceramic disc crap will do) in the NEUTRAL LINE
and an exposed battery box to charge NiCads off the mains. Add
a signal-diode to convert AC to DC, and you're done. Universal
charger, charges anything from 1 to 30 cells equally badly. Bonus
option to kill someone in use.

Being against that: not jobsworth!

At least put the dropper the right side, use the right component,
use a fuse, put it inside a box with an interrupter switch. At least
TRY not to be grade-A dangerous!

When I was a lad, radios and TVs had one of the incoming mains wires
strapped directly to the metal chassis, and since they usually had a
reversible bayonet connectors to plug into a light socket and bakelite knobs
that frequently fell off exposing potentially live metal spindles - I'm
surprised the entire British population wasn't extincted!

I do hear tales of those, and the attempts to stick bits of wax in
the knob's grub screws to stop people getting shocks etc. Mercifully, we
stopped doing dumb stuff like that and started using earthed
chassis, insulated boxes etc. in the UK. Mostly!

I have no problem with stuff being connected directly to the mains,
when it's been designed, not barfed up from inappropriate components.
Backed up by clueless justifications.

So call me a jobsworth

--
--------------------------------------+------------------------------------
Mike Brown: mjb[-at-]signal11.org.uk | http://www.signal11.org.uk

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Bill Wright wrote:
Norman Wells wrote:
Bill Wright wrote:
Steve Thackery wrote:

Should I try homosexuality too?

You mean you haven't already?

If you look down when you're wanking that's homosexuality.

I thought that was auto-eroticism. Or is that something to do with
cars?

Bloke (young bloke, about thirty) told me the other day he always
gets a hard on when he gives his children money. That's weird innit?

Depends what he's paying them for, I guess.

Bill Wright wrote:

People seem to be saying that LEDs are comparable, in terms of light
output versus power consumption, to CFLs and halogens.

No they didn't!! Nobody mentioned halogens. Halogens are hardly any
better than normal incandescents.

Both CFLs and LEDs are about five times more efficient than
incandescents. Most of the debate has been about whether LEDS are
significantly more efficient than CFLs. As far as I can tell, they
seem to be *slightly* more efficient, but published figures seem to
vary somewhat. LED technology is developing rapidly, which is probably
why it's so hard to find any agreed-upon efficiency figures for LEDs.

But even so, they seem to be broadly in the same ballpark as CFLs, and
probably tending towards the more efficient side. Halogens are nowhere.

--
SteveT