Leading edge vs tra...
 

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[Closed] Leading edge vs trailing edge LED dimmer

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 Joe
Posts: 1705
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Topic starter
 

Replaced a couple of dimmer switches in the house with LED specific dinners from screwfix this weekend.

The wife ordered these: https://www.screwfix.com/p/lap-2-gang-2-way-led-dimmer-switch-polished-chrome/22282

I’ve fitted them and the dimmable led bulbs are buzzing like crazy, even on full blast.

I’ve re read the spec and it seems this is a leading edge dimmer? I thought all LED dimmers were trailing edge? Why would you sell a dimmer specifically marketed for LED’s with only a leading edge setting ?

Or am I confused?


 
Posted : 08/12/2020 11:35 pm
 ffej
Posts: 0
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Are the bulbs themselves dimmable? From past experience some that claim to be dimmable are still a pain in the arse. Had issues with LAP bulbs and switched to Philips which have been bomb proof for years.

Varilight v pro dimmers work well and can be changed between modes to suit different bulb types.

J


 
Posted : 09/12/2020 7:11 am
 Joe
Posts: 1705
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ok... will order another bulb and see what happens then. I still wonder about the trailing edge thing... but will give it a go.


 
Posted : 12/12/2020 4:17 pm
Posts: 7932
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My experience is that most LEDs have an intense dislike of leading edge dimmers unless there's also a halogen load on it as well. Suggest the Varilight V-Pro dimmers instead, which can do both leading and trailing edge along with what I think is a weird (but effective) hybrid of the two.


 
Posted : 12/12/2020 4:57 pm
Posts: 17779
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I went for the Varilight jobs. Fixed my buzzing problem.


 
Posted : 12/12/2020 5:13 pm
Posts: 139
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As slowoldman says , I went for a varilight from screwfix and it’s absolutely silent


 
Posted : 12/12/2020 5:37 pm

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