Customer Review

1 of 1 people found the following review helpful
3.0 out of 5 stars When does a dimmable bulb not dim?, 27 Mar 2014
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This review is from: Philips Master LED GU10 Spot 5.5W (50W replacement) Dimmable, Cool White (Kitchen & Home)
I wanted to move to LEDs for a number of reasons and the bulbs perform adequately. What is irritating is that they claim to 'dim' and there is very little control over the spot lights in dimming mode. I would have purchased these spot lights had they not been dimmable but if the manufacturer claims that they are, then make sure that they do work in a conjunction with a dimmable light switch. Hugh
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Initial post: 9 May 2014 16:46:14 BDT
I wonder is this a dimmer problem rather than a LED problem?
I've been experimenting with dimmers and lights over the last few days.
My old dimmers were 50w minimum load, so in two clusters of 6, downstairs, I kept 1 x 35w halogen and installed 5x 4w Philips LED. Great.
In upstairs rooms I wanted to get away from halogen and MR16 transformers,for ceiling insulation purposes, so I switched all to LED, which meant new dimmers were needed.
I used 2 Aurora dimmer modules and 1 V-pro dimmer unit.
.The Aurora can be adjusted with a set screw to adjust the minimum dimming level.The V-Pro can be programmed (various on-off switch combinations) to adjust the dimmed brightless level.
The Aurora requires a minimum load of c. 14w. It works well with 6 x Philips 4w LEDs.
The V-pro needs a minimum load of 10w. In one room with two IKEA 7w LEDs it worked well, except for a switch-on time of close to 1 second. I tried Philips bulbs and they were near instant start up, but the only ones I had were 4w, so I was below minimum load, and they didn't dim properly.
So I changed this to an Aurora dimmer module and switch-on time reduced to less than a half second which was fine.

Wasn't life easy when we just slung a 100w bulb from the ceiling?
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