Understanding Power Consumption of a 4W LED Lamp: Does Usage Duration Matter?

Question

Hello, I bought a LED lamp, it says 4W on the package. I wonder how much power it can actually draw. Many guides on LED lighting say that it pays to install only where they shine a lot. And hence my question, is there a catch in these small 4W, or, for example, as in fluorescent lamps, they...

tomix · Answer

It depends on what you understand by the LED lamp. If it is, let's say, a bulb with an E14 / E27 thread, et cetera, it takes active power as much as it is written in the specification - that is, the 4W (losses on the power supply are taken into account). If you buy a 4W led strip and you want to connect it to an external power supply, apart from the 4W ones, you have to add the old one due to the different efficiency of the power supply (usually from 50 to 82%, those with PFC filter usually oscillate at the first limit ).

piotrusek29 · Answer

It really gets 4W.

ubidragon · Answer

No, it's an ordinary E14 bulb, powered by 230V instead of an ordinary bulb.

Łukasz-O · Answer

Standard light bulb instead of ordinary light bulb?

ubidragon · Answer

In the sense of an LED source instead of a light bulb.

Łukasz-O · Answer

There is no such thing as an LED bulb.

karolark · Answer

What do you want to replace with this LED? 4W LED is very, cheap and good.

Anonymous · Answer

Who told you such stupid things? Fluorescent lamps with a traditional ignition system have an increased current consumption from the moment of switching on to the moment of ignition (electrode heating before ignition occurs). It is a short period of time and of no financial importance. Compact and linear fluorescent lamps with an electronic system do not have an increased power consumption, I do not charge the capacitors immediately after switching on, because it is a fraction of a millisecond. Ordinary light bulbs also have an increased current consumption when turned on due to the low resistance of the cold filament.

kj1 · Answer

There is not? AND THIS what is?

jack63 · Answer

I answer. This is the linguistic structure of marketers.

Łukasz-O · Answer

But you have set an example on a very high level What is written there has nothing to do with reality. The LED bulb is a name made by marketing (just like jack63 wrote) and thoughtlessly duplicated. In fact, and in technical language, such a creation does not exist.

jack63 · Answer

Luke-O There is nothing to fight against windmills. We will not become quixotes. I piss myself off when someone calls air conditioning a coarse air conditioner. Better not to mention technology or function. The public will call you a Polish philologist at best A 4W LED light source should consume ... 4 W. And the fact that nowadays (tomorrow may be better) it gives a little more light than a candle is a separate problem.

ubidragon · Answer

I do not know if it was about specific fluorescent lamps, but in any case some energy-saving bulbs had such a reservation that there is a small power consumption, but only after some time and at the beginning it charges more.

As it really gets these 4W, it's great, really high energy efficiency.

As for the amount of light, the LEDs that I bought give really sharply and I think I had a good luck hitting the specific ones, because they are really decent, on the packaging the manufacturer gives a comparison to 31W bulbs, for me each of them shines at least 60W ( like no more) until now it is too clear in the room for me, I am thinking about leaving only one mounted. And of course, the color of the light is ok, everything is evenly lit. Anyway, on another topic I spoke.

serwisor · Answer

jack63 A 4W LED light source gives more light than a halogen bulb with a GU10 cap - 35W. The GZ10 is a bit different, because it also shines into the ceiling, which makes it brighter, but the 4W LEDs have successfully replaced 35 and 50W halogen lamps for me.

jack63 · Answer

Yes of course. I exaggerated a little.

A lot depends on the binding. Sometimes most of the light is "dimmed" in opaque shades.
For me, LEDs still have poor light scattering. They shine too punctually. In the area of the streak it "knocks out the eyes" and a bit further it is dark.
However, this is rapidly changing in favor.

ubidragon · Answer

As for light diffusion, look for lamps that are based on SMD LEDs, have good diffusion, I did not notice the spotlight, it illuminates the entire room very nicely.

Anonymous · Answer

This linguistic construction has nothing to do with marketing. It's just that terminology abhors a vacuum. Marketers came up with the term energy saving bulb , and there is no reason to be surprised because at a time when they wanted to introduce to the market compact fluorescent lamps , name fluorescent lamp it was associated with low-quality light. Here we can put an equal sign: compact fluorescent lamp = energy saving bulb Led bulb is a completely different story. Just as you cannot put an equal sign between two terms: discharge lamp and compact fluorescent lamp because the deadline discharge lamp it is more general, and so there is no equal sign between the terms LED lamp and led bulb because not every one LED lamp is led bulb .

e-sparks · Answer

I can see it already ... Led 4W, taking into account the losses of the power supply, emits up to 200 lumens, and a 35-watt halogen already 550 lumens. Not to mention 50 watt halogen - it's only 800 lumens ... It's the same as a 4W led bulb :idea: Regards, Wiesław

karolark · Answer

As above, the 4W led can replace a 25W light bulb, but not a 35 or 50W halogen lamp is a different story for them

e-sparks · Answer

It will not replace either: a 25-watt bulb emits a light beam of 200-250 lumens, which is a bit more than the 4-watt LEDs ... Regards, Wiesław

serwisor · Answer

4W LED 5050 with an angle of 120 degrees completely replaced the GU10 50W with an angle of 60 degrees.

I'm not talking about Lumens, but OK, I'm talking about what I see.
I will dedicate myself and take the MPI530 work with a lux meter and measure it, but this is only around Wednesdays ...

mikolaj. · Answer

And this is what I do not really understand, why during the "few" years of existence of LED "bulbs" on the market, the diffusion of light in such light elements has not been refined.
Candela has a lot of it, but in terms of the spatial angle they are still poor, and it is just a matter of profiling the "bulb" properly so that it scatters the light at the largest possible angle.
in the subject:

If the LEDzik goes directly on the thread after a conventional light bulb - yes, you can trust the power indicated on the packaging.

Greetings. Santa Claus

kriss032 · Answer

The led lamp, 4 watts, 12 volts consumes 4 watts, the led lamp, 4 watts, 230 volts has a power supply and in total consumes more than 4 watts (lamp + power supply).

Anonymous · Answer

The manufacturer should provide the power of the LED lamp taken from the 230V network and the power factor (apart from other parameters). So, a 4 watt LED lamp 230 volts draws 4 watts from the mains.

Zbigniew 400 · Answer

Oj kriss who told you such stupid things.
Since when does an ordinary person pay for reactive energy?
Does the 12V LED lamp have no power supply?
Calculate the power dissipated on the resistor matching the led power supply. This circuit is based on the voltage drop across the capacitor.

kriss032 · Answer

PGE Białystok charges for reactive energy (Exceeding the Tg-fi 0.4 standard applies to inductive reactive energy) read on the electrode https://www.elektroda.pl/rtvforum/topic3241406.html
The point is that 12 v led lamps do not have a switching power supply, switching power supplies found in home devices produce capacitive reactive energy. Inductive reactive energy motors

Zbigniew 400 · Answer

Should I send you a 12v led lamp with a switching power supply?

Do you know someone / an ordinary person / who charges PGE for reactive energy, because I don't. Publish the invoice.

That link is about the prosumer.

Anonymous · Answer

12V LED lamps with a power of more than 2.5 watts have switched-mode power supplies. I bought it with a power of 1.2W (12V) and it has a switching power supply. Such a LED, e.g. 6W with resistors, would be a heater. Below are examples of LED 12V / 6W technical data: Let me explain - CCD is a Constant Current Driver, i.e. a pulsed DC converter. More precisely, a prosumer who has a contract with the Electricity Board to sell surplus electricity to the grid.

kriss032 · Answer

A prosumer is a natural person.

Understanding Power Consumption of a 4W LED Lamp: Does Usage Duration Matter?

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