FAQ - Dimming

Video

Dimmable LED lamps – Selecting the right combination of bulb, transformer, and dimmer

Not all bulbs are suitable for dimming. In this video, Jens explains which transformer and which dimmer you'll need for your LED, halogen, or incandescent bulb, and what you should keep in mind when using dimmable bulbs to adjust the lighting and brightness in your home.

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Which lights or bulbs can I dim?

Which lights or bulbs can I dim?

  • High-voltage and low-voltage halogen lamps and bulbs can be dimmed easily.
  • LED bulbs and LED lights can be dimmed if they have been specially designed for this and are labelled accordingly.
  • Dimming technology is not available with energy-saving bulbs.

How do I know if a bulb or light can be dimmed?

How do I know if a bulb or light can be dimmed?

In Paulmann catalogues or on packaging you will recognise dimmable Paulmann bulbs and lights by the dimming symbol. Dimmability is also shown in the online shop.

 

What should I look out for when choosing the dimmer?

What should I look out for when choosing the dimmer?

During installation the right dimmer must be matched to the right bulb or light.

All Paulmann transformers (230/12 V AC) are dimmable.

  • For LED bulbs, you need either a leading-edge or trailing-edge dimmer.
  • For 12V halogen bulbs with an electronic transformer normally a trailing-edge dimmer is needed,
  • while for 12V halogen bulbs with a conventional transformer a leading-edge dimmer is required.
  • 230V halogen bulbs can be dimmed with any dimmer.

The three letters 'R', 'L', 'C' or a combination thereof are used to identify dimmers and electronic transformers.

In order to choose the correct dimmer, the corresponding letters on the transformer, bulb and dimmer must match.

If halogen lamps are frequently dimmed, from time to time you should turn the dimmer up to full power to excite the halogen cycle in the lamps again and help maintain a long lifetime.

Are there special dimmers for LED?

Are there special dimmers for LED?

Some dimmer manufacturers are now offering special LED dimmers. These are leading-edge phase dimmers with a very low minimum load range.

 

My bulb / lamp won't dim, what could be the reason?

My bulb / lamp won't dim, what could be the reason?

  • The bulb / light is one that cannot be dimmed or
  • you may have selected the incorrect dimmer technology (leading/trailing edge dimmer).

My light fitting / transformer buzzes when dimmed, what is the cause?

My light fitting / transformer buzzes when dimmed, what is the cause?

Dimmers work like fast electronic switches. That means a dimmer switches the bulb / light off for short periods of time. The switching on and off causes abrupt changes in the magnetic field of conventional transformers. Due to the changes in the magnetic field, the transformer windings start to vibrate, which is amplified particularly strongly on wooden ceilings.

A possible solution would be to loosen the screws. You could also try placing a rubber insert between the transformer and ceiling.

Is it possible to dim seamlessly?

Is it possible to dim seamlessly?

In principle yes, but in some cases it can lead to small jumps in brightness. The cause here is the interplay between LED bulbs and lights and the dimmers used. It may be necessary to use a different type of dimmer and/or one from a different manufacturer.

 

Can I dim down to 0% or will the light turn off below a certain percentage?

Can I dim down to 0% or will the light turn off below a certain percentage?

This depends on the dimmer in question, but down to 0% is not usual in most models.