Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
On 19/01/2025 13:14, David wrote:
Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
I have found that it doesnt much matter where or what brand you buy. Dimmables with leading edge dimming that I have are all flicker prone.
Many have burnt out. The replacements seem to be holding up.
My guess is that the chip makers now have chips that work and don't die
young and the 'bad' LEDS are now mostly history.
I think I buy in tens from LED lighting specialists, but haven't had to
buy any that recently, or maybe the last were from Amazon.
On Sun, 19 Jan 2025 13:27:44 +0000, The Natural Philosopher wrote:
On 19/01/2025 13:14, David wrote:
Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
I have found that it doesnt much matter where or what brand you buy.
Dimmables with leading edge dimming that I have are all flicker prone.
Many have burnt out. The replacements seem to be holding up.
My guess is that the chip makers now have chips that work and don't die
young and the 'bad' LEDS are now mostly history.
I think I buy in tens from LED lighting specialists, but haven't had to
buy any that recently, or maybe the last were from Amazon.
I looked at LEDHut and discovered that I have bought from them and they
sell LumiLife bulbs.
Now trying to revive my account.
They don't seem to have the bulb that I want in stock at the moment.
I've run out of non-LED BC bulbs.
I need some warm white 100W equivalent to replace the next one which fails. [Amazon internal search is useless!]
If I use an external search I get loads of hits for Amazon.
<https://www.amazon.co.uk/TEKLED%C2%AE-Bayonet-Incandescent-Equivalent- Dimmable/dp/B08SZB1LXQ>
for example.
Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
I have some TCP ES in stock, and have used the last Lumilife BC (but can't recall where I bought these).
Not Amazon because they would show in my order history.
Any recommendations more than welcome.
Too much choice, as usual.
I've run out of non-LED BC bulbs.
I need some warm white 100W equivalent to replace the next one which fails. [Amazon internal search is useless!]
If I use an external search I get loads of hits for Amazon.
<https://www.amazon.co.uk/TEKLED%C2%AE-Bayonet-Incandescent-Equivalent- Dimmable/dp/B08SZB1LXQ>
for example.
Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
I have some TCP ES in stock, and have used the last Lumilife BC (but can't recall where I bought these).
Not Amazon because they would show in my order history.
Any recommendations more than welcome.
Too much choice, as usual.
Cheers
Dave R
On 19/01/2025 13:14, David wrote:
I've run out of non-LED BC bulbs.
I need some warm white 100W equivalent to replace the next one which
fails.
[Amazon internal search is useless!]
If I use an external search I get loads of hits for Amazon.
<https://www.amazon.co.uk/TEKLED%C2%AE-Bayonet-Incandescent-Equivalent-
Dimmable/dp/B08SZB1LXQ>
for example.
Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
I have some TCP ES in stock, and have used the last Lumilife BC (but
can't recall where I bought these).
Not Amazon because they would show in my order history.
Any recommendations more than welcome.
Too much choice, as usual.
I fitted dimmable bulbs to a new light fitting but with an old dimmer
switch and they failed to dim
On recommendation on here I purchased a V-pro dimming switch from
Screwfix and that dimmed the bulbs on the default mode of operation.
Some dimmable LED bulbs, such as the ones I purchased, may not work with leading edge dimmer switches. I didn't find that I had much choice
finding a 5W E17 dimmable bulb.
The V-pro has 3 possible user configured options, two different methods
of falling edge dimming and a one leading edge dimming.
I haven't got the instruction in front of me but I seem to remember that
the switches can also be user programmed for maximum and/or minimum brightness and the equivalent of a child lock to prevent accidental reprogramming. Programming is achieved with the single combined push
on/off and rotary dimmer knob.
I've run out of non-LED BC bulbs.
I need some warm white 100W equivalent to replace the next one which fails. [Amazon internal search is useless!]
If I use an external search I get loads of hits for Amazon.
<https://www.amazon.co.uk/TEKLED%C2%AE-Bayonet-Incandescent-Equivalent- Dimmable/dp/B08SZB1LXQ>
for example.
Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
I have some TCP ES in stock, and have used the last Lumilife BC (but can't recall where I bought these).
Not Amazon because they would show in my order history.
Any recommendations more than welcome.
Too much choice, as usual.
Cheers
If you want low level “warmth” LED lighting then pick a wattage that works
without dimming.
On 19/01/2025 19:06, Tim+ wrote:
If you want low level “warmth” LED lighting then pick a wattage that works
without dimming.
Or buy warm coloured LED's to start with.
Harry Bloomfield Esq <harry.m1byt@outlook.com> wrote:
On 19/01/2025 19:06, Tim+ wrote:
If you want low level “warmth” LED lighting then pick a wattage that works
without dimming.
Or buy warm coloured LED's to start with.
You’re missing my point. A “warm” coloured LED light stops being “warm”
when dimmed.
Tim+ <timdownieuk@yahoo.co.youkay> wrote:
Harry Bloomfield Esq <harry.m1byt@outlook.com> wrote:
On 19/01/2025 19:06, Tim+ wrote:
If you want low level “warmth” LED lighting then pick a wattage that works
without dimming.
Or buy warm coloured LED's to start with.
You’re missing my point. A “warm” coloured LED light stops being “warm”
when dimmed.
That sounds like perception bias to me.
You dim a 2700K incandescent and it
reduces to say 2200K colour temperature. You dim a 2700K LED and it's still 2700K just with less intensity. There's no difference in the latter case to fitting a bulb that's still 2700K but of a lower wattage, but when you twiddle the knob your brain is expecting the colour temperature to drop and it feels wrong when it doesn't.
Or are you saying there's some mechanism by which a 2700K bulb actually
rises in measurable colour temperature when dimmed? Maybe the blue->yellow phosphors work less efficiently, or something?
There are apps to measure CT if you want to see if it does actually change: https://kelvin-meter.contechity.com/
Theo <theom+news@chiark.greenend.org.uk> wrote:
Tim+ <timdownieuk@yahoo.co.youkay> wrote:
Harry Bloomfield Esq <harry.m1byt@outlook.com> wrote:
On 19/01/2025 19:06, Tim+ wrote:
If you want low level “warmth” LED lighting then pick a wattage that works
without dimming.
Or buy warm coloured LED's to start with.
You’re missing my point. A “warm” coloured LED light stops being “warm”
when dimmed.
That sounds like perception bias to me.
Absolutely. As it doesn’t “warm” in the same way as an incandescent bulb
when dimmed one perceives it as cooler.
It really come down to why one uses dimmers in the first place. I’ve only ever used them to produce a warmer, “more intimate”, atmosphere.
You dim a 2700K incandescent and it
reduces to say 2200K colour temperature. You dim a 2700K LED and it's still
2700K just with less intensity. There's no difference in the latter case to
fitting a bulb that's still 2700K but of a lower wattage, but when you twiddle the knob your brain is expecting the colour temperature to drop and it feels wrong when it doesn't.
Or are you saying there's some mechanism by which a 2700K bulb actually rises in measurable colour temperature when dimmed? Maybe the blue->yellow phosphors work less efficiently, or something?
There are apps to measure CT if you want to see if it does actually change: https://kelvin-meter.contechity.com/
I dare say that the colour temperature *doesn’t* change, but that’s not what we’re used to when dimming a conventional light.
Theo <theom+news@chiark.greenend.org.uk> wrote:
Tim+ <timdownieuk@yahoo.co.youkay> wrote:
Harry Bloomfield Esq <harry.m1byt@outlook.com> wrote:
On 19/01/2025 19:06, Tim+ wrote:
If you want low level “warmth” LED lighting then pick a wattage that works
without dimming.
Or buy warm coloured LED's to start with.
You’re missing my point. A “warm” coloured LED light stops being “warm”
when dimmed.
That sounds like perception bias to me.
Absolutely. As it doesn’t “warm” in the same way as an incandescent bulb
when dimmed one perceives it as cooler.
It really come down to why one uses dimmers in the first place. I’ve only ever used them to produce a warmer, “more intimate”, atmosphere.
You dim a 2700K incandescent and it
reduces to say 2200K colour temperature. You dim a 2700K LED and it's still >> 2700K just with less intensity. There's no difference in the latter case to >> fitting a bulb that's still 2700K but of a lower wattage, but when you
twiddle the knob your brain is expecting the colour temperature to drop and >> it feels wrong when it doesn't.
Or are you saying there's some mechanism by which a 2700K bulb actually
rises in measurable colour temperature when dimmed? Maybe the blue->yellow >> phosphors work less efficiently, or something?
There are apps to measure CT if you want to see if it does actually change: >> https://kelvin-meter.contechity.com/
I dare say that the colour temperature *doesn’t* change, but that’s not what we’re used to when dimming a conventional light.
Tim
Or are you saying there's some mechanism by which a 2700K bulb actually
rises in measurable colour temperature when dimmed? Maybe the blue->yellow phosphors work less efficiently, or something?
David <wibble@btinternet.com> wrote:
I've run out of non-LED BC bulbs.Having been very disappointed in the quality of light from dimmed LEDs I
I need some warm white 100W equivalent to replace the next one which
fails.
[Amazon internal search is useless!]
If I use an external search I get loads of hits for Amazon.
<https://www.amazon.co.uk/TEKLED%C2%AE-Bayonet-Incandescent-Equivalent-
Dimmable/dp/B08SZB1LXQ>
for example.
Are all dimmable LEDs much of a muchness, or should I look for a
specialist LED supplier?
I have some TCP ES in stock, and have used the last Lumilife BC (but
can't recall where I bought these).
Not Amazon because they would show in my order history.
Any recommendations more than welcome.
Too much choice, as usual.
Cheers
now eschew them. Incandescent bulbs get “warmer” as you dim them whilst LEDs just get dimmer. Without the added “warmth” of light that were used to the light just ends up feeling colder when dimmed.
If you want low level “warmth” LED lighting then pick a wattage that works without dimming.
Just my opinion.
On Sun, 19 Jan 2025 19:06:02 +0000, Tim+ wrote:
Having been very disappointed in the quality of light from dimmed LEDs I
now eschew them. Incandescent bulbs get “warmer” as you dim them whilst >> LEDs just get dimmer. Without the added “warmth” of light that were used >> to the light just ends up feeling colder when dimmed.
If you want low level “warmth” LED lighting then pick a wattage that
works without dimming.
Just my opinion.
Ummm.....
The whole point of dimmable lights (to me) is to use one light fitting to give variable brightness depending on the need of the moment.
Based on all my previous experience of light dimmers, I expect a change in brightness and colour temperature.
David <wibble@btinternet.com> wrote:
On Sun, 19 Jan 2025 19:06:02 +0000, Tim+ wrote:
Having been very disappointed in the quality of light from dimmed LEDs I >>> now eschew them. Incandescent bulbs get “warmer” as you dim them whilst
LEDs just get dimmer. Without the added “warmth” of light that were used
to the light just ends up feeling colder when dimmed.
If you want low level “warmth” LED lighting then pick a wattage that >>> works without dimming.
Just my opinion.
Ummm.....
The whole point of dimmable lights (to me) is to use one light fitting to
give variable brightness depending on the need of the moment.
If you’re only interested in “brightness” and not the “dead flesh” look
that a standard dimmed LED gives, then fine.
Based on all my previous experience of light dimmers, I expect a change in brightness and colour temperature.
There are probably RGB LED bulbs which will follow an 'incandescent' profile >as you dim them, although typically you'd use their controls not a >traditional wall dimmer.
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