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E27 led bulb on a leading-edge dimmer buzzes

Many LED bulbs are made for trailing-edge dimmers and misbehave on a leading-edge one. Check which dimmer type the bulb maker lists and fit that. There's no standard minimum load: use the minimum and maximum printed on your dimmer — with 8 W E27 bulbs a 10 W minimum needs 2, a 40 W minimum 5. The bulb must be marked dimmable.

E27 · led · leading-edge · buzzes · change

Many LED bulbs are made for trailing-edge dimmers and misbehave on a leading-edge one. Check which dimmer type the bulb maker lists and fit that.

Lights for this

50 lights
Jensen Wall Sconce
Jensen Wall Sconce
Jensen Wall Sconce

Jensen Wall Sconce

from £115
E27 · dimmable as stated by the supplier
Arrives 14–24 Oct
The first 50 are shown, best fit first

The numbers for this situation

  • Typical bulb8 Wled E27
  • Bulbs for a 10 W printed minimum2the minimum printed on your dimmer decides
  • Bulbs for a 40 W printed minimum5
  • Our E27 lights stated dimmable130
  • Share of our E27 lights stated dimmable3 %

Worked out, not measured

Where these numbers come from

  • Bulbs needed = the minimum printed on the dimmer ÷ the bulb's watts, rounded up; typical bulb wattages are assumptions. Checked against 424 matching lights in our catalogue snapshot of 2026-09-27; 130 can be bought now. Same sums on every page, release families-2026-09-29.

All the numbers

Minimum printed on the dimmer (W)Bulbs neededLoad (W)
018
10216
20324
40540

Related

E27 · led · trailing-edge · buzzesE27 · led · leading-edge · flickersE27 · led · leading-edge · won't dim smoothlyE27 · led · leading-edge · glows when switched off