Hello,
i was told that once led light is dimmed it increases the amount of flicker from the light, it also creates high EMF levels being emitted from the bulbs.

So does it mean there is no way how to manage dimming in the safe way without flickering and creating high EMF?

Thanks!

 

Don’t believe everything you hear.

 

@BobTPH yeah... i thought so ... so no idea why there are not able / willing to support dimming.

In case i have the bulb can i install something to somehow dim it?
I am talking about that bulb> https://www.blockbluelight.co.uk/co...-lighting/products/blue-blocking-sleep-lights


thanks!

 

Hello,
i was told that once led light is dimmed it increases the amount of flicker from the light, it also creates high EMF levels being emitted from the bulbs.

So does it mean there is no way how to manage dimming in the safe way without flickering and creating high EMF?

Thanks!

A/C dimmers are notoriously noisy -- electrical, emf, and often even audibly.

Does the LED bulb emit EMF in addition? If so, not near the same magnitude (assuming a good design).

 

Does the LED bulb emit EMF in addition? If so, not near the same magnitude (assuming a good design).

not sure what do you mean by in addition?

 

not sure what do you mean by in addition?

The dimmer itself is going to generate noise (I'm assuming the bulb is connected to a dimmer).

A well designed bulb will likely produce far less noise than the dimmer itself while attached to the dimmer circuit.

 

that bulb comes w/out dimmer, so i was wondering if it can be dimmable ... i mean dimmer circuit can be hidden/shielded... no idea.

 

that bulb comes w/out dimmer, so i was wondering if it can be dimmable ... i mean dimmer circuit can be hidden/shielded... no idea.

I assumed you were speaking of a dimmable LED bulb. Check with the seller.

 

Some dimmer schemes are not applicable to some LED bulb supplies because the dimmer varies the effective voltage while the supply works to hold the current at a constant level. That has stumped one installation where the person was assured that the light fixtures were dimmable. But they do not dim at all. A floor lamp on the same dimmed circuit dims very gracefully, while the two light fixtures do not dim, until they abruptly extinguish. So evidently I need to replace the regulator ballasts with much simpler "rectified DC, current limited", devices. Really, a royal pain.

 

that bulb comes w/out dimmer, so i was wondering if it can be dimmable ... i mean dimmer circuit can be hidden/shielded... no idea.

The bulb is non dimmable according to the specs.
The bulb is described as a dimmer light meaning the blue and green spectrum has been filtered out.
Not a dimmer bulb.

 

There is not much inside an LED bulb that would produce an electromagnetic field! Of course, the guy who wants to sell you an aluminum foils suit and hat will "lie like a dirty rug" to get your money. I would say that to the guy's face, too!

 

There is not much inside an LED bulb that would produce an electromagnetic field!

I have to agree. I've been taking LED bulbs apart lately, failed ones. One style is a simple current limiting circuit. No EMF. Another type of electronics inside an LED is what I would assume to be a PWM control. It is probably more the non-dimmable type - but I'm no expert on the subject.

This is how I've dimmed LED's without flicker in the past (below). One thing I've observed is that dimming a non-dimmable but simple electronic circuit is to include an incandescent lamp in the bunch. The video is of a Four Light ceiling fan fixture that I dim all the time. That one and others in my house, I've been dimming them with standard dimmers for years.

 

Adding an incandescent bulb is the one thing I did not try yet. That would need to be installed in the unfinished basement of the house the LED fixtures are installed in. I will give that a try and report back what happens.

 

So does it mean there is no way how to manage dimming in the safe way without flickering and creating high EMF?

Getting back to this question:

Yes, there are dimming schemes that do not produce visible flicker and high EMF.

 

The basic reality is quite different than THE TOTAL LIES spread by those who say that a flickering LED bulb "produces an EMF!" That statement is simply a total falsehood , there is nothing in an LED bulb capable of producing any EMF (ElectroMagneticField) . Justlook at that interior view of the internal portion of an LED in that recent post from "Tonyr1084" and it will be obvious.

YES!! I AM certainly calling those folks LIARS, make no mistake about that!!

 

Adding an incandescent bulb is the one thing I did not try yet. That would need to be installed in the unfinished basement of the house the LED fixtures are installed in. I will give that a try and report back what happens.

When I first installed pot lights (w/LED) they were regular switch controlled. But the two issues here was bringing a basket full of laundry into a dark room you had to put the basket down to turn the light switch on. The second issue was that the light was often left on. So I got an Occupancy Sensor switch. But that resulted in the lights never going completely off AND they would flicker viciously. I then added one more light to the circuit and put an incandescent lamp in it. The lights no longer flicker and when they're off they're off.

Since then I've replaced the Occupancy switch with a newer type. If I remove the incandescent lamp I don't get the flickering when off. Something about loading the output of the switch I think.

 

here is nothing in an LED bulb capable of producing any EMF (ElectroMagneticField)

All electronic devices other than a simple resistor in a DC circuit produce EMF.

A marketable design that meets FCC/CE requirements limits that EMF to below acceptable levels.

 

There may be electro-STATIC fields due to the mains voltages, but the magnetic fields tend to cancel in the areas outside the bulb housing.
AND those who claim the harmful effects are simply cheating the unknowing folks by selling products that would provide no benefit even if it mattered. Just how much magnetic flux will aluminum foil block???

 

AND those who claim the harmful effects are simply cheating the unknowing folks by selling products that would provide no benefit even if it mattered.

You'll get no disagreement from me on this.

I'm only speaking technical facts.

Further: when I hear people speak of EMF, I'm thinking: "Will it interfere with my AM radio's reception." It is difficult for me to realize they believe there is some health issue associated with their operation of the device.

 

I find threads like this very strange.

No electronic components produce electromagnetic fields.

coughmovingchargedparticlescough