How can you better understand the electrical transformers in your lighting?

27 février 2025

Do you often hear about “electrical transformers” or “drivers” but aren’t sure what they’re for? Don’t worry, in this article, we’ll explain everything: the essential role these devices play in lighting, how they work, and how to use them.

Comment mieux comprendre les transformateurs électriques de vos luminaires ?

What is the role of an electrical transformer?

To begin with, it’s essential to understand that the electrical transformer is widely used in the lighting industry. It plays a crucial role in adjusting the voltage between the current supplied by the electrical grid and the current required by the lighting fixture.

In general, a transformer either decreases or increases the voltage of the electrical current flowing through the network, allowing the current to move from one line to another.

Quel est le rôle d’un transformateur électrique ?

Let’s take an example: if a power outlet provides a 230V signal and you connect it directly to a 110V light fixture, the fixture could “burn out” due to the incoming current’s strength. That’s why it’s essential to use a transformer to reduce the incoming power and adapt it to our lights.

Dimmable vs. Non-Dimmable Transformers: What’s the Difference?

There are two main types of transformers: dimmable transformers and non-dimmable transformers, each with unique characteristics and applications.

Dimmable Transformer

The dimmable transformer is used for lights requiring variable light intensity. Note that the dimmable transformer is compatible only with dimmable bulbs. Versatile, the dimmable transformer lets you control bulb brightness by adjusting voltage and current. This feature allows you to create various ambiances in your living room or bedroom while offering extended bulb life.

Non-Dimmable Transformer

The non-dimmable transformer, on the other hand, provides constant voltage and does not allow for light intensity adjustment. Simple and cost-effective, the non-dimmable transformer is ideal for fixtures needing consistent lighting.

Understanding Its Function…

Invented by Hungarian engineer Ottó Bláthy, the standard single-phase electrical transformer operates quite simply. It is housed in an electrical substation, made up of two copper coils and an iron core. The electrical current flows through the primary coil, then into the secondary coil, converting the current as it goes. This process helps reduce the electrical voltage.

There are other types of electrical transformers designed for larger electrical machines, such as the three-phase transformer, which consists of three cores and six coils.

Using Electrical Transformers with Your Light Fixtures

Here is a varied selection of Nedgis light fixtures that require an electrical transformer.

Ideal for highlighting art pieces, the Mondrian 400 wall light can be paired with a driver specifically designed for this model. The Astro Tridonic transformer integrates seamlessly into the wall light’s casing, ensuring discreet installation and optimal performance.

The Mezzaluna floor lamp from DCW éditions Paris ensures exceptional light efficiency in various living spaces, thanks to its integrated dimmer.

The Mini Mini is an outdoor floor lamp created by designer Franco Zavarise for Zava. It requires a transformer specifically designed for outdoor use. The Inverlight Meanwell transformer is perfect for this type of lighting.

Also, the S series by Gantlights includes a transformer for its pendant lights and wall lights.

In general, some light fixtures with integrated LED sources are equipped “natively” with transformers, meaning manufacturers integrate them directly into the LED source during production. This way, the current is automatically transformed without any specific installation steps.

In summary, it’s crucial to use an electrical transformer for certain lighting to prevent damage, ensure safety, and conveniently control your lighting.