LED-lighting

25 questions about LED lighting

Over the years we received many questions about LED lighting. We have an answer for everything, of course, so do you have any questions that are missing here? Let us know.

1. What is an LED?

LED stands for Light Emitting Diode. An LED is a component that converts electricity into light by means of 2 different semiconductors. When electrons move from one semiconductor to another, energy is released that they have to get rid of. As a result, they emit light. An LED is, as it were, a chip. They are also produced in the same way as microchips for telephones and computers.

2. When was LED invented?

The first LED was invented in 1927 by Oleg Losev. At the time it was not yet usable for commercial purposes, but it soon became clear that LED was a possible new future light source. Due to further development, the cost price did not fall until the 1960s. The blue LED was invented in 1994 by the Japanese Shuji Nakamura, soon after the white LED was also invented.

3. Why is an LED driver needed?

The diode itself cannot function on a normal power grid, the power supply is not constant enough for this and the LED starts flashing. The driver provides an electronic circuit so that there is a constant current supply.

4. Why does LED last longer than normal light sources?

LED is a chip and is precisely punched by machines. This process is optimized, always the same and virtually error-free. Therefore, the quality of the LED is constant and consistent. When assembling normal lighting, more oxygen is present. This accelerates the aging process and reduces the quality of light. This problem is not present with LED, the light quality is maintained for up to 50,000 burning hours.

5. What is the difference between installing LED and normal lighting?

LED consumes less energy, so less power needs to be moved to the LED fixture/lamp. That is why you can work with thinner cables and fewer cables, which saves not only the investment but also the amount of work. That makes LED interesting for both new and existing buildings.

6. Why does an LED consume less power?

Due to the cooperation of 2 semiconductors, LEDs need less energy to produce light. The electrons switch between the 2 semiconductors, 80% of this energy is converted into light. A large part of the energy is therefore conserved, which means that LEDs can operate at a lower energy state.

7. What should I pay attention to when purchasing an LED lamp?

When purchasing LED lighting and choosing the right LED lamp, there are a number of things that you can pay attention to.
- lumen (brightness)
- kelvin (light color)
- wattage
- socket type
- quality

8. What are the advantages of an LED lamp?

- Low energy consumption, so cheap to use;
- Very long lifespan (up to 50,000 burning hours);
- Shockproof;
- No warm-up time, so immediate maximum brightness;
- Contains no harmful substances.

9. What are the disadvantages of an LED lamp?

- Not all LED lamps are dimmable, if they are dimmable, a separate driver, transformer or dimmer is sometimes required
- Higher purchase price;
- Large variations in quality of life, color rendering and light distribution;
- Limited to unsuitable for closed lamp holders and spotlights.

10. Can I just throw away a broken LED lamp?

LED lamps contain electronics and must therefore be disposed of with small chemical waste. You can also hand in your used LED lamp in the store where you buy a new one or in a WeCycle container in the supermarket.

11. Why does an LED turn on immediately?

Especially larger conventional lighting fixtures (such as sports field lighting, for example) have to warm up.

12. How do I know what color light the lamp has?

The light color is expressed in Kelvin (K). Warm light is the standard white/yellow halogen lamp and is expressed in 3000K. The yellow/orange color of a light bulb is extra warm: 2700K. We have one for that useful image made for you.

13. Do I also have to replace the fixture of my lamp?

Most LED lamps are retrofit, ie they fit in any standard fitting or fixture. In most cases, the fixture does not need to be replaced. Do you want to know for sure? Take a good look at the dimensions or inquire.

14. What makes LED different from regular lighting?

LEDs can be switched on and off as often as necessary, without this having a negative effect on the lifespan of the luminaire or the quality of the lighting. A light bulb uses combustion to create light, the constant switching on and off of a light bulb has a negative impact on its lifespan. LED is also much more flexible than regular lighting, which makes it possible to connect the lighting to intelligent lighting control systems. These systems can contribute to achieving additional savings.

15. How quickly is the investment in LED lamps paid back?

It takes an average of two years before you have paid off the investment in LED lamps. However, this depends on the difference in wattage with the old lamp and the number of burning hours per day.

16. LED is getting cheaper, why shouldn't I wait to invest?

As with televisions and computers, newer models and technology will continue to be introduced. LED is in development and will continue to be so in the coming years. The energy saving is something that is already a fact at the moment. That's why it's a shame to wait, because you can start saving energy from today.

17. How does LED dimming work?

Dimming brings atmosphere. Whether an LED lamp can be dimmed depends on the type of lamp and the electronics it contains. Not all LED lamps can be dimmed, it depends on the type of driver present in the lamp. In most cases, it is stated with the products whether a lamp is dimmable or not. The electronics in an LED lamp or LED spot work differently than a halogen lamp or incandescent lamp. The dimmer must be suitable for this.

18. How many spots can be connected to one dimmer?

The power of the dimmer determines the number of LED lamps to be dimmed. 10% of the maximum power of the dimmer can be used for dimming. An example: Your dimmer has a power of 150 watts, 10% of which is 15 watts. You can then dim 1, 2 or up to 3 lamps of 5 watts via this dimmer. It will therefore have to be examined for each dimmer what the possibilities are.

19. My LED lights are blinking, why is that?

Dimmable LED lamps do not always work in combination with an old-fashioned dimmer. When connecting an LED lamp to a 'normal' dimmer, the lamp can start blinking, buzzing or vibrating. The lamp may even break. It may also be that too much wattage is used for what the dimmer can handle. In that case, use a lower or higher wattage LED dimmer.

20. Why is LED lighting more expensive?

We already indicated that an LED lamp is a piece of electronics, you just pay a little more for that. The lifespan cannot be compared with current lighting and the quality is also better preserved over the term.

21. How does LED light differ from light from normal lamps?

Light from LEDs is easy to control, it is possible to produce different light colours. This way you can purchase whiter light that corresponds to that of daylight. LED light therefore has more contrast, which contributes to faster detection of movements and depth. The color retention is also much better with LED luminaires than with conventional floodlights. The amount of Kelvin from a lamp will not decrease.

22. Which LED bulb replaces my incandescent bulb?

Before the old light bulb, the amount of light was often expressed in Watt. For example, you provided 25 Watt in your table lamp and 60 Watt above the dining table. But Watt is an expression of electrical power, not light. That is why we now use 'lumen' to compare the light output of different (LED) light sources. Below you can see how that compares.

23. Do I have to replace my transformer when replacing 12V lighting with LED?

A halogen transformer often has a minimum wattage that a few LED lamps do not meet. If this is the case, you can use an LED transformer with a low minimum wattage. Need a transformer? This is only necessary when connecting 12V or 24V lamps to the normal power supply. You do not need a transformer with the 230V lamps.

24. Do I need a 12V MR16 spot or a 230V GU10 spot?

In most cases, both are possible. Because of the humidity, 12V MR16 spots are usually used in bathrooms and kitchens, for example. However, 230V GU10 spot is usually preferred because they are more effective and because no transformer is needed, which is the case with 12V.

25. Which fittings are all for LED?

Choose LED fitting? If you want to replace an old or broken lamp for an LED lamp, first take a good look at what kind of fitting you need. LED lamps can be used in existing luminaires because they have the same fittings as incandescent lamps. A number of different LED fittings can be distinguished. We know the LED fittings: E14, E27, GU10, GX5.3, GU5.3, GU4, G4, GX53 and GU9.