Incandescent bulbs - decision, plus Edison Screw question

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?

Rod.

"Vir Campestris" wrote in message
o.uk...
On 27/05/2014 13:57, Max Demian wrote:
I wonder how diabetics manage if they go hyper in the pub?

I suspect you mean hypo.

Reach for the glucose tablets. And they will have them on them if they
have any sense.

Hyper is what needs insulin.

--
Max Demian

On Tue, 27 May 2014 19:27:10 +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.

Rod.

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.

Rod.

In article ,
Roderick Stewart wrote:

I haven't checked those exact figures, but I don't see why in
principle a lamp that uses half as much electricity couldn't dissipate
less than half the heat if it's a more efficient lamp that dissipates
more light instead. You seem to be assuming that all the electrical
energy will be emitted as heat.

All the energy *is* heat in the end, where "in the end" means within a
few microseconds of it being emitted. That's why it doesn't stay
light when you turn the light off!

But even ignoring that, the efficiency of CFL and LED lamps is only of
the order of 8-15%, so it couldn't possibly explain the claimed
figures.

-- Richard

In article ,
Roderick Stewart wrote:

Perhaps I detect the same sort of lack of lateral thinking that makes
people ask where they can find a PVR that can record three programmes
at once, when the simple answer is that you don't need to. You are
allowed to have more than one PVR, or more than one light bulb.

Not without changing my light fittings. I'm not going to do that
for some brief period when multiple small lamps are cheaper to run.

-- Richard

Steve Thackery wrote:

By the way, Bill, how did you get that plate made with the number cut
out? It looks very smart and precisely cut.

It was the side panel of a computer. A very lovely piece of perfectly
flat, smooth, brushed aluminium, about 0.8mm thick. I started with a
basic commercial font (can't remember which) and altered it slightly.
Printed it at the correct size, glued it lightly to the metal sheet.
Then cut out the shape fairly crudely with a grinding wheel in a
dremmel. Finished it with one of those little milling wheels in the
dremmel, and a small hand file. With thin metal like that the jigsaw
would have been disastrous. The 'island' of the '4' is supported by a
wire bridge.

The diffuser behind the panel is a sheet of white plastic intended for
that purpose. Cost a tenner.

The LEDs face backwards towards the reflector, which is crumpled Bacofoil.

Each rail of LEDs has an over-voltage protection device. However I
tested a few LEDs at 30V for 10 mins and they were unscathed.

Bill

Indy Jess John wrote:

She died before the bulb failed,

Any warranty left on her?

Bill

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.

Bill

Steve Thackery wrote:


That aside, "works" isn't a binary state, because there's always the
question "How well does it work?"

That reminds me of a lad I used to employ. He did work, you couldn't
fault him there, but the thing was, how well did he work?

Bill