My flat's main room ceiling lighting is OEM, apart from adding shades and replacing bulbs. It has two dangling lights controlled by a 2-spst switch pair by the door.

The main room of the flat of my next-door neighbour (not the recently aforementioned neighbour) would originally have had the same. It now has a double-dimmer switch pair by the door, a dangling light at one end with a bulb which works, and at the other end a three-bulb ceiling-mounted fitting with no bulbs.

The dimmers would have been installed for/by the previous resident, meaning at least eight years ago, and therefore designed for incandescent filament bulbs.

She wants to have bulbs in the three-bulb fitting.

I remember that nowadays one must be careful about compatibility between bulbs and dimmers.

She is out now, and I have not yet looked at the dangling bulb.

I have not yet found anything up-to-date-looking about this in the Wiki-FAQ..

So, what would it be best to do?

P.S. I'm still catching up on recommendations for Win7 - Win10.

--
(c) John Stockton, near London, UK. Using Google Groups. |
Mail: - or as Reply-To, if any. |

I'm sticking with win 7 till some applications need to be updated or until
the anti virus no longer supports windows 7.
Brian

--
----- --
This newsgroup posting comes to you directly from...
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Blind user, so no pictures please
Note this Signature is meaningless.!
wrote in message
...
My flat's main room ceiling lighting is OEM, apart from adding shades and
replacing bulbs. It has two dangling lights controlled by a 2-spst switch
pair by the door.

The main room of the flat of my next-door neighbour (not the recently
aforementioned neighbour) would originally have had the same. It now has a
double-dimmer switch pair by the door, a dangling light at one end with a
bulb which works, and at the other end a three-bulb ceiling-mounted fitting
with no bulbs.

The dimmers would have been installed for/by the previous resident, meaning
at least eight years ago, and therefore designed for incandescent filament
bulbs.

She wants to have bulbs in the three-bulb fitting.

I remember that nowadays one must be careful about compatibility between
bulbs and dimmers.

She is out now, and I have not yet looked at the dangling bulb.

I have not yet found anything up-to-date-looking about this in the Wiki-FAQ.

So, what would it be best to do?

P.S. I'm still catching up on recommendations for Win7 - Win10.

--
(c) John Stockton, near London, UK. Using Google Groups. |
Mail: - or as Reply-To, if any. |

In article ,
wrote:
My flat's main room ceiling lighting is OEM, apart from adding shades
and replacing bulbs. It has two dangling lights controlled by a 2-spst
switch pair by the door.

The main room of the flat of my next-door neighbour (not the recently
aforementioned neighbour) would originally have had the same. It now
has a double-dimmer switch pair by the door, a dangling light at one end
with a bulb which works, and at the other end a three-bulb
ceiling-mounted fitting with no bulbs.

The dimmers would have been installed for/by the previous resident,
meaning at least eight years ago, and therefore designed for
incandescent filament bulbs.

She wants to have bulbs in the three-bulb fitting.

I remember that nowadays one must be careful about compatibility between
bulbs and dimmers.

It's just possible the dimmers may work with LEDs. I have MK grid ones
dating from the 90s which do.

You won't break anything by trying LED bulbs on a none LED dimmer.

--
*To steal ideas from *one* person is plagiarism; from many, research*

Dave Plowman London SW
To e-mail, change noise into sound.

On 11/02/2020 16:11, wrote:
My flat's main room ceiling lighting is OEM, apart from adding shades and replacing bulbs. It has two dangling lights controlled by a 2-spst switch pair by the door.

The main room of the flat of my next-door neighbour (not the recently aforementioned neighbour) would originally have had the same. It now has a double-dimmer switch pair by the door, a dangling light at one end with a bulb which works, and at the other end a three-bulb ceiling-mounted fitting with no bulbs.

The dimmers would have been installed for/by the previous resident, meaning at least eight years ago, and therefore designed for incandescent filament bulbs.

She wants to have bulbs in the three-bulb fitting.

I remember that nowadays one must be careful about compatibility between bulbs and dimmers.

She is out now, and I have not yet looked at the dangling bulb.

I have not yet found anything up-to-date-looking about this in the Wiki-FAQ.

So, what would it be best to do?

P.S. I'm still catching up on recommendations for Win7 - Win10.

I have bought LED bulbs from homebase that are both cheap and alledely
dimmable. They sort of dim - not great, but dim they do. On a bog
standard dimnmer.

You can get LED compatible dimmer modules to replace the rotary knob
things in the existing dimnmer foir not huge money



--
In todays liberal progressive conflict-free education system, everyone
gets full Marx.

On Tuesday, 11 February 2020 16:59:50 UTC, Dave Plowman (News) wrote:
In article ,
JRS wrote:

....


She wants to have bulbs in the three-bulb fitting.

I remember that nowadays one must be careful about compatibility between
bulbs and dimmers.

It's just possible the dimmers may work with LEDs. I have MK grid ones
dating from the 90s which do.

You won't break anything by trying LED bulbs on a none LED dimmer.

Thanks. I have now seen the dangling bulb, which is LED; it works on the existing dimmer.

I have some spare LED bulbs, which are all BC; but her fitting is ES. I have a BC-ES adaptor, but it is the wrong way round :-(.

I'll get an ES bulb to be tried on the next convenient day.


--
(c) John Stockton, near London, UK. Using Google Groups. |
Mail: - or as Reply-To, if any. |

On 11/02/2020 16:11, wrote:
My flat's main room ceiling lighting is OEM, apart from adding shades and replacing bulbs. It has two dangling lights controlled by a 2-spst switch pair by the door.

The main room of the flat of my next-door neighbour (not the recently aforementioned neighbour) would originally have had the same. It now has a double-dimmer switch pair by the door, a dangling light at one end with a bulb which works, and at the other end a three-bulb ceiling-mounted fitting with no bulbs.

The dimmers would have been installed for/by the previous resident, meaning at least eight years ago, and therefore designed for incandescent filament bulbs.

She wants to have bulbs in the three-bulb fitting.

I remember that nowadays one must be careful about compatibility between bulbs and dimmers.

She is out now, and I have not yet looked at the dangling bulb.

I have not yet found anything up-to-date-looking about this in the Wiki-FAQ.

So, what would it be best to do?

P.S. I'm still catching up on recommendations for Win7 - Win10.


All perfectly doable. She needs LED bulbs which are dimmable - not all
are - and she needs a dimmer switch which is capable of handling LEDs.

When I asked a similar question a while ago, Adam recommended the
Varilight V-Pro range. I fitted one when I fitted a new 5-bulb pendant
light in my dining room using dimmable LED bulbs - and it's been fine.

It may simply be a case of replacing the existing two-gang dimmer switch
with one of these:
https://www.screwfix.com/p/varilight...ch-white/98455
or similar - they come in various finishes to suit the decor.
--
Cheers,
Roger

On Tuesday, 11 February 2020 16:59:50 UTC, Dave Plowman (News) wrote:
In article ,
wrote:

My flat's main room ceiling lighting is OEM, apart from adding shades
and replacing bulbs. It has two dangling lights controlled by a 2-spst
switch pair by the door.

The main room of the flat of my next-door neighbour (not the recently
aforementioned neighbour) would originally have had the same. It now
has a double-dimmer switch pair by the door, a dangling light at one end
with a bulb which works, and at the other end a three-bulb
ceiling-mounted fitting with no bulbs.

The dimmers would have been installed for/by the previous resident,
meaning at least eight years ago, and therefore designed for
incandescent filament bulbs.

She wants to have bulbs in the three-bulb fitting.

I remember that nowadays one must be careful about compatibility between
bulbs and dimmers.

It's just possible the dimmers may work with LEDs. I have MK grid ones
dating from the 90s which do.

You won't break anything by trying LED bulbs on a none LED dimmer.

Not true at all. If you're lucky they'll work fine together. If you're unlucky the lamps will use CR PSUs which die quickly on trailing or leading edge dimmers.


NT

writes:

On Tuesday, 11 February 2020 16:59:50 UTC, Dave Plowman (News) wrote:
In article ,
wrote:
I remember that nowadays one must be careful about compatibility between
bulbs and dimmers.

It's just possible the dimmers may work with LEDs. I have MK grid ones
dating from the 90s which do.

You won't break anything by trying LED bulbs on a none LED dimmer.

Not true at all. If you're lucky they'll work fine together.
If you're unlucky the lamps will use CR PSUs which die
quickly on trailing or leading edge dimmers.

Particularly if the LED load is less than the minumum rated load
of the dimmer. The smell from an exploded LED bulb hangs around
for weeks.

--
Jón Fairbairn

In article ,
wrote:
It's just possible the dimmers may work with LEDs. I have MK grid ones
dating from the 90s which do.

You won't break anything by trying LED bulbs on a none LED dimmer.

Not true at all. If you're lucky they'll work fine together. If you're unlucky the lamps will use CR PSUs which die quickly on trailing or leading edge dimmers.

I've never damaged a LED by *trying* it on a non trailing edge dimmer.
Long term use might, of course, but why would you?

--
*A conscience is what hurts when all your other parts feel so good *

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Jon Fairbairn wrote:
Not true at all. If you're lucky they'll work fine together.
If you're unlucky the lamps will use CR PSUs which die
quickly on trailing or leading edge dimmers.

Particularly if the LED load is less than the minumum rated load
of the dimmer. The smell from an exploded LED bulb hangs around
for weeks.

Can you explain the theory behind that?

--
*Just remember...if the world didn't suck, we'd all fall off*

Dave Plowman London SW
To e-mail, change noise into sound.

On Wednesday, 12 February 2020 11:27:36 UTC, Dave Plowman (News) wrote:
In article ,
tabbypurr wrote:

It's just possible the dimmers may work with LEDs. I have MK grid ones
dating from the 90s which do.

You won't break anything by trying LED bulbs on a none LED dimmer.

Not true at all. If you're lucky they'll work fine together. If you're unlucky the lamps will use CR PSUs which die quickly on trailing or leading edge dimmers.

I've never damaged a LED by *trying* it on a non trailing edge dimmer.

then you've not used a CR PSU led light for that job.

Long term use might, of course, but why would you?

nothing long term about it, the PSU R experiences gross overload and smokes in seconds.


NT

In article ,
wrote:
I've never damaged a LED by *trying* it on a non trailing edge dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable' (with a
suitable dimmer) ?

--
*Be nice to your kids. They'll choose your nursing home.

Dave Plowman London SW
To e-mail, change noise into sound.

On 11/02/2020 22:06, wrote:
On Tuesday, 11 February 2020 16:59:50 UTC, Dave Plowman (News) wrote:

Not true at all. If you're lucky they'll work fine together. If you're unlucky the lamps will use CR PSUs which die quickly on trailing or leading edge dimmers.


NT


I found the Varilight vpro range very good with LEDs declared as dimmable.

3 operating modes - trailing, leading and something else can be
programmed as well as max and min settings.

https://www.tlc-direct.co.uk/Products/VLJQP401W.html

On 12/02/2020 13:48, wrote:
On Wednesday, 12 February 2020 11:27:36 UTC, Dave Plowman (News) wrote:
snip
nothing long term about it, the PSU R experiences gross overload and smokes in seconds.

Indeed.
When LED bulbs finally became affordable I replaced 10 x 50W halogen
bulbs originally configured split over 2 x dimmer switches with
"dimmable" LED bulbs but all wired as a single circuit to keep the load up.

Switched them on and the bulb closest to the dimmer blew, switched it
off and thought it might just have been a duff bulb as all the rest were
fine so took it out and switched them back on and the next (now the
closest) bulb blew.

Replaced dimmer with a regular light switch after that and use a small
table lamp for softer lighting.

On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News) wrote:
In article ,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing edge dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable' (with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper dimming. The only way to tell a CR PSU LED from an SMPSU LED is to open it up.


NT

wrote in message
...
On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News) wrote:
In article ,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing edge
dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable' (with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper dimming.

The only way to tell a CR PSU LED from an SMPSU LED is to open it up.

Thats bull****, you can measure it too.

On Thu, 13 Feb 2020 10:02:08 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


That¢s bull****, you can measure it too.

The bull**** you keep spouting here IS measureless, senile Rodent!

--
Norman Wells addressing trolling senile Rodent:
"Ah, the voice of scum speaks."
MID:

On Wednesday, 12 February 2020 23:02:19 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News) wrote:
In article ,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing edge
dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable' (with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper dimming.

The only way to tell a CR PSU LED from an SMPSU LED is to open it up.

Thats bull****, you can measure it too.

It is possible to scope the mains current waveform to see what's going on, but if someone is asking how to tell they're not likely to have a scope, or be able to do it if they did. A pf meter won't tell you, CR & small SMPSUs are both low pf, albeit in different ways. And modern pf reporting power meters have a habit of talking nonsense.


NT

wrote in message
...
On Wednesday, 12 February 2020 23:02:19 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News)
wrote:
In article ,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing edge
dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable'
(with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper
dimming.

The only way to tell a CR PSU LED from an SMPSU LED is to open it up.

Thats bull****, you can measure it too.

It is possible to scope the mains current
waveform to see what's going on,

Thats not the only way to measure it.

but if someone is asking how to tell
they're not likely to have a scope, or
be able to do it if they did.

Irrelevant to your ignorant claim about opening it up.

A pf meter won't tell you, CR & small SMPSUs
are both low pf, albeit in different ways.

Having fun thrashing that straw man ?

And modern pf reporting power meters
have a habit of talking nonsense.

Having fun thrashing that straw man ?

On Thu, 13 Feb 2020 13:17:14 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

Having fun thrashing that straw man ?

I do have fun thrashing the straw in your thick senile head, senile Rodent!
And there will never be a way out of it for you again! LOL!

--
Marland answering senile Rodent's statement, "I don't leak":
"That¢s because so much **** and ****e emanates from your gob that there is
nothing left to exit normally, your arsehole has clammed shut through disuse
and the end of prick is only clear because you are such a ******."
Message-ID:

"Dave Plowman (News)" writes:

In article ,
Jon Fairbairn wrote:
Not true at all. If you're lucky they'll work fine together.
If you're unlucky the lamps will use CR PSUs which die
quickly on trailing or leading edge dimmers.

Particularly if the LED load is less than the minumum rated load
of the dimmer. The smell from an exploded LED bulb hangs around
for weeks.

Can you explain the theory behind that?

I dont have theory, I have practice.

But I imagine that (assuming some inductor in the dimmer
circuit) if the load is too low it generates spikes ‰« 240V that
the LED cant handle. Of course, it could have been coincidence,
but Im certain about the smell.


--
Jón Fairbairn
http://www.chaos.org.uk/~jf/Stuff-I-dont-want.html (updated 2014-04-05)

On Thursday, 13 February 2020 02:17:25 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 23:02:19 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News)
wrote:
In article ,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing edge
dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable'
(with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper
dimming.

The only way to tell a CR PSU LED from an SMPSU LED is to open it up..

Thats bull****, you can measure it too.

It is possible to scope the mains current
waveform to see what's going on,

Thats not the only way to measure it.

whether it is or not has no relevance to a non-electronics person asking how they can distinguish one form the other.

your junk snipped

wrote in message
...
On Thursday, 13 February 2020 02:17:25 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 23:02:19 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News)
wrote:
In article ,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing edge
dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable'
(with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper
dimming.

The only way to tell a CR PSU LED from an SMPSU LED is to open it
up.

Thats bull****, you can measure it too.

It is possible to scope the mains current
waveform to see what's going on,

Thats not the only way to measure it.

whether it is or not has no relevance to a
non-electronics person asking how they
can distinguish one form the other.

You never could bull**** your way out of a wet paper bag.

A non electronics person wouldnt be able to
work out what type of PSU it has even after
they had opened it up, you pathetic excuse
for a bull**** artist.

And the plow**** is in fact an electronics person, ****wit.

On Thursday, 13 February 2020 19:25:13 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Thursday, 13 February 2020 02:17:25 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 23:02:19 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News)
wrote:
In article ,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing edge
dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says 'dimmable'
(with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper
dimming.

The only way to tell a CR PSU LED from an SMPSU LED is to open it
up.

Thats bull****, you can measure it too.

It is possible to scope the mains current
waveform to see what's going on,

Thats not the only way to measure it.

whether it is or not has no relevance to a
non-electronics person asking how they
can distinguish one form the other.

You never could bull**** your way out of a wet paper bag.

A non electronics person wouldnt be able to
work out what type of PSU it has even after
they had opened it up,

it's easy to spot the difference.

you pathetic excuse
for a bull**** artist.

that honour is all yours

And the plow**** is in fact an electronics person,

with no familiarity with LED PSUs. But I'm sure he could tell a SMPSU from a capacitor on sight

****wit.

you certainly are.

On Fri, 14 Feb 2020 06:25:03 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


You never could bull**** your way out of a wet paper bag.

You certainly KEEP bull****ting your way FAST into your grave, you
despicable trolling senile idiot!

--
about senile Rot Speed:
"This is like having a conversation with someone with brain damage."
MID:

wrote in message
...
On Thursday, 13 February 2020 19:25:13 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Thursday, 13 February 2020 02:17:25 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 23:02:19 UTC, Rod Speed wrote:
tabbypurr wrote in message
...
On Wednesday, 12 February 2020 14:42:13 UTC, Dave Plowman (News)
wrote:
In article
,
tabbypurr wrote:

I've never damaged a LED by *trying* it on a non trailing
edge
dimmer.

then you've not used a CR PSU led light for that job.

How would I know a CR PSU from an LED that simply says
'dimmable'
(with a
suitable dimmer) ?

Dimmable LEDs can not contain CR PSUs, they don't survive chopper
dimming.

The only way to tell a CR PSU LED from an SMPSU LED is to open it
up.

Thats bull****, you can measure it too.

It is possible to scope the mains current
waveform to see what's going on,

Thats not the only way to measure it.

whether it is or not has no relevance to a
non-electronics person asking how they
can distinguish one form the other.

You never could bull**** your way out of a wet paper bag.

A non electronics person wouldnt be able to work out
what type of PSU it has even after they had opened it
up, you pathetic excuse for a bull**** artist.

it's easy to spot the difference.

Not for a non electronics person, you
pathetic excuse for a bull**** artist.

And the plow**** is in fact an
electronics person, ****wit.

with no familiarity with LED PSUs.

Thats bull**** too.

But I'm sure he could tell a SMPSU from a capacitor on sight

And would certainly be able to measure the led bulb
to see what sort of PSU it has, and even has a scope
and knows how to use it too, you pathetic excuse for
a bull**** artist.

Keep digging, you'll be out in china any day now.
Hopefully in Hubin.

On Thursday, 13 February 2020 20:38:35 UTC, Rod Speed wrote:

rubbish snipped. Don;t think I need waste any more time on you

On Fri, 14 Feb 2020 07:38:25 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH senile cretin's endless troll****

--
Website (from 2007) dedicated to the 85-year-old trolling senile
cretin from Oz:
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

wrote in message
...
On Thursday, 13 February 2020 20:38:35 UTC, Rod Speed wrote:

Don;t think I need waste any more time on you

You never could bull**** your way out of a wet paper bag.

On Fri, 14 Feb 2020 12:10:45 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


Don;t think I need waste any more time on you

You never could bull**** your way out of a wet paper bag.

You KEEP bull****ting your way FAST into your grave, you abnormal
85-year-old trolling senile asshole!

--
Website (from 2007) dedicated to the 85-year-old trolling senile
cretin from Oz:
https://www.pcreview.co.uk/threads/r...d-faq.2973853/